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REVIEW 3 major objections 4 minor 50 references

Ground state exciton-polariton condensation by coherent Floquet driving

T0 review · 3 major / 4 minor · reviewed 2026-08-07 · deepseek-v4-flash

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Pith's one-line read A 7 GHz acoustic wave sweeping the exciton energy through the trap modes selectively transfers most of a multimode exciton-polariton condensate into the photonic ground state, producing a single-level frequency comb with picosecond-scale…

desk verdict Solid experimental demonstration of acoustic Floquet ground-state selection in a multimode polariton BEC, but the model is fit to the effect and the 'full transfer' wording overstates it. read the letter →

arxiv 2506.05874 v1 pith:CH5ZKHTO submitted 2025-06-06 physics.optics

Alexander Kuznetsov , Ignacio Carraro-Haddad , Gonzalo Usaj , Klaus Biermann , Alejandro Fainstein , Paulo V. Santos This is my paper
classification physics.optics
keywords exciton-polaritoncondensateFloquetdrivingcoherentpopulationtransferLandau-ZenertunnelingGHzacousticmodulationopticalfrequencycombsemiconductormicrocavityquantumfluidoflight
verification ladder T0 review T1 audit T2 compute T3 formal

The pith

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The reading

This paper reports that a 7 GHz acoustic wave, applied to a semiconductor microcavity, can redistribute an exciton-polariton Bose-Einstein condensate among the confined optical modes of a trap and concentrate it in the lowest-energy photonic state. The authors show that as the acoustic amplitude is increased, emission from the excited modes is progressively depleted while the ground-state mode grows until its photoluminescence exceeds that of every other level by at least an order of magnitude. The same ac drive turns the ground-state emission into a frequency comb with a spacing set by the 7 GHz modulation and into a train of sub-50 ps pulses, while first-order coherence persists across several modulation periods. They propose a general Floquet-style mechanism: periodic modulation of the exciton energy creates repeated avoided crossings with the confined photon modes, and adiabatic Landau-Zener-like transfer together with bosonic stimulation routes the population to the ground state. If right, this provides an electrical, on-demand control knob for multimode light-matter condensates and a route to tunable ultrafast pulsed emission.

What carries the argument

The central object is the time-periodic Hamiltonian $H(t)=H(t+T_M)$, realized by modulating the bare exciton energy $\varepsilon_X(t)=\varepsilon_X^*+A_M\cos(\Omega_M t)$ with a 7 GHz bulk acoustic wave. As the modulated exciton sweeps through each avoided crossing with a confined photon mode, population is transferred by the coherent Rabi coupling in a Landau-Zener-like adiabatic passage, while stimulated scattering amplifies already-occupied modes and the effective gain and loss for each mode switch with the instantaneous exciton-photon detuning. The model couples one exciton amplitude to the confined photonic modes through Eqs. (1)--(2), including time-dependent scattering rates and cavity losses, and its time-averaged populations reproduce the measured progressive loading of the levels as $A_M$ is increased. This machinery carries the argument because the sequence of crossings depletes the higher modes and seeds the ground state, and because the ground state spends the least time in the regime where scattering is suppressed and losses are enhanced, leaving it dominant.

What would settle it

Look for the predicted cascade in time-resolved emission: at an amplitude where the exciton's downward sweep crosses the first excited mode, that mode should light up and then turn off as the exciton passes below it, while lower-energy levels should not yet light up; if instead all modes gain or lose population simultaneously, the detuning-switch mechanism is wrong. A second check is whether ground-state dominance disappears when the exciton minimum does not reach the ground mode.

Watch

Extended reading notes

Core claim

The central claim is that a strong time-periodic modulation of the bare exciton energy, $\varepsilon_X(t)=\varepsilon_X^*+A_M\cos(\Omega_M t)$, generated by a GHz bulk acoustic wave, converts a multimode exciton-polariton BEC into a single-mode ground-state condensate. In the experiments on a $4\times4\,\mu\mathrm{m}^2$ polariton trap at detuning $\approx -13$ meV, increasing the acoustic amplitude $A_M$ first depletes the higher confined modes $|\Psi_2\rangle$ and $|\Psi_3\rangle$, then loads $|\Psi_0\rangle$; at $A_M\approx0.25\,\sqrt{\mathrm{W}}$ the ground-state photoluminescence exceeds the other levels by at least an order of magnitude while the total integrated emission stays nearly constant. The ground-state spectrum is a comb of sidebands spaced by $\hbar\Omega_M$, and the first-order correlation function shows peaks at multiples of the modulation period together with sub-period structure implying sub-50 ps pulses. The accompanying model, Eqs. (1)--(2), attributes the transfer to adiabatic Landau-Zener-like crossings of the modulated exciton with each confined photon mode, stimulated scattering into already-populated modes, and a detuning-dependent suppression of gain and enhancement of loss as the exciton moves below a mode.

Load-bearing premise

The argument stands on the assumption that stimulated scattering into a confined mode switches off and its losses switch on, in the step-like way the model prescribes, as soon as the modulated exciton energy drops below that mode; neither these switch functions nor the mapping from applied radio-frequency power to the exciton energy excursion are measured independently.

Editorial extensions

If this is right

  • At modulation amplitudes where the bare exciton reaches the trap's photonic ground state, the condensate's emission collapses to that level, with ground-state photoluminescence more than an order of magnitude above the other modes.
  • The ground-state output is a frequency comb with spacing $\hbar\Omega_M$ and a train of sub-50 ps pulses at the 7 GHz repetition rate, while first-order coherence survives for several modulation periods.
  • Because total emission intensity stays roughly constant while the acoustic amplitude is varied, the drive acts as a redistribution tool: it routes polaritons between confined levels without changing the overall population.
  • By tuning the modulation amplitude, population can be directed to a chosen level, and the same mechanism should seed excited-level BECs when the interlevel splitting is comparable to or larger than the Rabi coupling.
  • The Floquet nature of the driven condensate, visible as resolved sideband combs, provides a way to modulate BECs on lattices and potentially to realize non-reciprocal photonic transport.

Reading between the lines

Editorial extensions of the paper, not claims the author makes directly.

  • The mechanism should work as a programmable level selector: by adjusting $A_M$ so that the modulated exciton just touches a chosen confined mode, the same redistribution should concentrate population in that mode; targeting excited levels is mentioned in the paper, but no experiment demonstrates it.
  • The model's sharp tanh switches for gain and loss predict a threshold curve for ground-state emission versus $A_M$: emission should rise steeply once the exciton's minimum energy reaches the ground mode, and the position and shape of that threshold would independently constrain the phenomenological parameters.
  • Driving faster or with smaller Rabi coupling should enter the Landau-Zener-Stuckelberg-Majorana interference regime, where sideband intensities develop oscillatory fringes; this is a testable prediction not carried out here.
  • Because the scheme only needs a periodic energy modulation, analogous control might be achievable in other driven condensates, such as photonic or atomic BECs, by substituting the acoustic strain with a different periodic potential, though that extension is speculative.
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Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, and a circularity audit.

Referee Report

3 major / 4 minor

Summary. The paper reports experiments on a 4x4 µm^2 exciton-polariton microcavity trap driven by a 7 GHz acoustic wave. The acoustic strain periodically modulates the bare exciton energy, sweeping it through several confined photonic modes. Above the condensation threshold, increasing the acoustic amplitude AM redistributes the multimode polariton emission toward the ground state |Ψ0⟩; at AM≈0.25 the ground-state photoluminescence exceeds the other confined levels by about an order of magnitude. High-resolution spectra show Floquet sidebands forming a frequency comb, and first-order autocorrelation measurements indicate coherence persisting over several modulation periods. The authors propose that the redistribution arises from adiabatic Landau-Zener-like population transfer combined with bosonic stimulation, and they support this with a driven-dissipative coupled-mode model. A central experimental observation—a controlled, amplitude-tunable redistribution of a multimode condensate into its ground state—appears credible, but the mechanistic attribution is weakened by strongly phenomenological elements in the model.

Significance. If the effect is as robust as the data suggest, this is a valuable experimental advance: it demonstrates a new control knob for multimode polariton condensates, with potential relevance to Floquet engineering of light-matter systems and to tunable pulsed sources. The paper's strengths include the systematic experimental characterization across several excitation powers (SI Sec. 4), the high-resolution comb spectra, the time-domain autocorrelation data, and the unusually candid SI discussion of what the model can and cannot reproduce without additional terms. The central limitation is that the model's agreement is substantially built from detuning-dependent gain/loss functions that are adjusted to produce the observed sequential depletion, so the paper does not yet independently establish the claimed Landau-Zener-plus-stimulated-scattering mechanism. With appropriate rephrasing of the mechanistic claims and a quantitative treatment of the model's ad hoc ingredients, the work would be a solid contribution.

major comments (3)
  1. [SI Sec. 8C, Eqs. (7)-(8); SI Table II; Fig. 2e] The model agreement in Fig. 2e does not independently validate the proposed mechanism. The tanh gain-suppression and loss-enhancement functions in SI Eqs. (7) and (8) are introduced explicitly to "reproduce the selective filling of modes observed experimentally" (SI Sec. 8C), and SI Sec. 8B shows that without them the model "lacks the clean sequential depletion observed in experiments" (SI Fig. 9b). Moreover, the decisive parameters a, b, Δε_cont, and γ^(∞) are not listed in SI Table II, so the quantitative fit is not a parameter-free test. Please report these parameters, provide a sensitivity analysis over a physically reasonable range, or obtain independent estimates from, e.g., detuning-dependent gain/loss measurements; otherwise, the text should clearly label the model as phenomenological and the mechanistic claim as a proposal rather than a demonstrated conclusion.
  2. [Abstract; Section II, Fig. 2a,b] The abstract's statement that "the full BEC population can be selectively transferred to the ground state" overstates the experimental result. The data in Fig. 2a,b show that at AM≈0.25 the |Ψ0⟩ PL exceeds the other levels by roughly an order of magnitude, but residual emission from higher levels remains, and for AM>0.35 there is a partial recovery of multimode condensation. This is a strong redistribution, not a demonstration of full transfer. Please revise the wording to "dominant" or "overwhelmingly transferred" and state the measured contrast explicitly.
  3. [Section II; SI Sec. 2; Figs. 1c and 2a] The calibration of the horizontal axis AM to the maximum bare-exciton excursion ΔE_X^max(AM) is obtained from the spatially extended non-etched region using a two-oscillator fit (SI Fig. 2), but it is then applied to the 4x4 µm² trap in Figs. 1c and 2a. Because the trap has an etched spacer and different lateral confinement, the strain amplitude at the trap location could differ from that in the extended region, which would shift the inferred crossing condition. The claim that AM≈0.25 corresponds to the exciton crossing the photonic ground state is load-bearing for the selectivity argument; please justify the transferability of this calibration or perform an in-trap calibration.
minor comments (4)
  1. [Abstract] The phrase "an universal strategy" should be "a universal strategy."
  2. [Section II, after Eq. (2)] The text says "the detuning of between the exciton and photonic modes"; "of" should be removed.
  3. [Discussion] The sentence "which can exceeded the light-matter coupling energy" should read "which can exceed the light-matter coupling energy."
  4. [General] The paper would benefit from a brief statement in the main text clarifying that the tanh functions in SI Eqs. (7)-(8) are phenomenological and that their parameters are not yet independently measured; this would help readers calibrate the strength of the mechanistic conclusion.

Circularity Check

1 steps flagged · score 6.0 of 10

Selective-transfer mechanism rests on detuning-dependent gain/loss functions (SI Eqs. 7-8) fitted to the sequential depletion they are invoked to explain; model agreement is not independent evidence.

  1. fitted input called prediction [Supplementary Information Sec. 8C, Eqs. (7)-(8); main text Sec. II, model paragraph and Fig. 2e]
    "The step-like form of α_j(t) ensures that when the exciton energy falls below the cavity mode energy, scattering into the mode is strongly suppressed ... This expression phenomenologically incorporates the dynamic nature of the gain in our system and allows the model to reproduce the selective filling of modes observed experimentally. ... The inclusion of this term allows the model to account for the experimentally observed suppression of lasing in cavity modes that become strongly positively detuned at large modulation amplitudes."

    The central model output used to support the mechanism, namely the sequential depletion of higher modes and ground-state dominance (Fig. 2e), is generated by Eqs. (7)-(8). These tanh functions contain adjustable parameters a, b, Δε_cont, and γ^(∞), and SI Sec. 8C states they were introduced expressly 'to reproduce the selective filling of modes observed experimentally' and 'to account for the experimentally observed suppression of lasing.' SI Sec. 8B admits that without these terms the model 'lacks the clean sequential depletion observed in experiments' (Fig. SI 9b). The decisive parameters are not listed in SI Table II, so the agreement between Fig. 2e and the experimental Fig. 2b is a fit to the target effect, not an independent prediction.

full rationale

The experimental demonstration of acoustic redistribution of PL among the trap modes is self-contained and credible: the PL maps, frequency combs, linewidth trends, and g(1) measurements stand independently of the model and do not depend on any circular argument. The circularity is confined to the theoretical attribution of the mechanism. In the extended model, the unmodulated multimode distribution is set by empirically tuned scattering coefficients α_j (SI Sec. 8B), and the crucial 'sequential depletion and ground-state dominance' is produced by the tanh gain-suppression and loss-enhancement functions of SI Eqs. (7)-(8), which SI Sec. 8C states were included 'to reproduce the selective filling of modes observed experimentally.' SI Sec. 8B explicitly shows the model without these terms 'lacks the clean sequential depletion observed in experiments.' Since a, b, Δε_cont, and γ^(∞) do not appear in SI Table II, the Fig. 2e agreement with Fig. 2b is a fit of the target effect rather than a parameter-free prediction. The Landau-Zener crossings, comb structure, and pulsed autocorrelation retain independent content, so the paper is not wholly circular; however, the specific claim that stimulated scattering plus adiabatic Landau-Zener transfer causes the selective ground-state condensation is substantially supported by a model whose decisive ingredients reproduce that same outcome by construction. No load-bearing self-citation chain was found; the cited prior work on detuning-dependent relaxation is external and would be independent support if applied without fitted envelopes.

Assumptions & free parameters 5 free parameters · 6 assumptions · 0 invented entities

The central claims rest on a set of phenomenological ingredients: mode-dependent Rabi couplings and filling rates are fitted to the unmodulated multimode emission, and the time-dependent gain suppression and loss enhancement (Eqs SI-7 and SI-8) are introduced with parameters chosen to reproduce the sequential depletion. No new microscopic entities are postulated, but the model is not first-principles.

free parameters (5)
  • alpha_j (filling rate constants) = alpha0=1.6, alpha1=1.7, alpha2=1.9, alpha3=1.9, alpha4=1.6 (SI Table II)
    Empirically tuned so that higher modes dominate lasing at AM=0, matching the observed multimode condensation. Stated as 'adjusted empirically to reproduce the observed behavior of the measured traps' (SI Sec 8B).
  • Jj (Rabi coupling energies for confined modes) = J0=19, J1=19, J2=50, J3=69, J4=12 (units of ℏΩM)
    Chosen to account for the spatial overlap between the exciton reservoir and each confined mode. Not independently measured for each mode in the trap; SI Sec 8A notes the simplification is sufficient to reproduce key features.
  • gamma_j and gamma_X (decay rates) = gamma0..4=1.5, gammaX=1.2, gammab=5 (units of ℏΩM)
    Chosen to match observed linewidths and decay behavior. Not derived from first principles.
  • tanh parameters a, b, Delta_epsilon_cont, gamma^(infinity) = Not listed in the parameter table; described only as smoothing parameters
    Control the time-dependent gain suppression (Eq SI-7) and loss enhancement (Eq SI-8). The paper states these are included to reproduce the experimentally observed sequential depletion, so they are free parameters fitted to data.
  • Delta_E_X^max(AM) calibration slope = Linear fit from SI Sec 2
    Maps applied rf power A_M to the maximum bare-exciton energy excursion. Obtained by fitting a two-oscillator model to photoluminescence spectra, not by an independent strain measurement.
assumptions (6)
  • domain assumption The acoustic strain modulates only the bare exciton energy; the photonic modes remain unmodulated.
    Assumption (i) in the main text and SI Sec 8. The strain-photon coupling is neglected, though the strain field could also affect the cavity dielectric constant or induce local heating.
  • domain assumption A single effective excitonic state couples to each confined photonic mode with a mode-dependent coupling Jj.
    SI Sec 8A: momentum-selective population is modeled by different Jj. This simplifies the real multi-exciton, multi-mode structure.
  • ad hoc to paper Stimulated scattering from the exciton into each confined mode is described by rate terms alpha_j with a tanh energy cutoff (Eq SI-7).
    The functional form is chosen to suppress scattering when the exciton is below a mode, a behavior the authors state is needed to reproduce observations. No microscopic derivation is given.
  • ad hoc to paper Cavity losses increase sharply when a mode approaches the continuum of higher-energy exciton states, via Eq SI-8.
    Introduced to account for the observed depletion of higher modes; the parameters Δε_cont and γ^(∞) are not independently measured.
  • domain assumption The system operates deep in the adiabatic Landau-Zener regime because the Rabi coupling exceeds the modulation frequency.
    Used to justify near-unity transfer at each anti-crossing. The paper notes the opposite (diabatic) regime would lead to Stückelberg interferences, but does not explore it.
  • domain assumption The non-resonant optical pump injects particles only into the bare exciton state.
    The reservoir dynamics are not modeled; the pump appears as a constant injection rate P in the exciton equation.

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Cite this review

Pith. "Pith review of Ground state exciton-polariton condensation by coherent Floquet driving." pith.science (2026). https://pith.science/paper/CH5ZKHTO

@misc{pith2026250605874,
  author       = {Pith},
  title        = {Pith review of: Ground state exciton-polariton condensation by coherent Floquet driving},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/CH5ZKHTO}},
  note         = {Machine review of arXiv:2506.05874}
}
read the original abstract

The on-demand selective population transfer between states in multilevel quantum systems is a challenging problem with implications for a wide-range of physical platforms including photon and exciton-polariton Bose- Einstein condensates (BECs). Here, we introduce an universal strategy for this selective transfer based on a strong time-periodic energy modulation, which is experimentally demonstrated by using a GHz acoustic wave to control the gain and loss of confined modes of an exciton-polariton BEC in a microcavity. The harmonic acoustic field shifts the energy of the excitonic BEC component relative to the photonic ones, which generates a dynamic population transfer within a multimode BEC that can be controlled by the acoustic amplitude. In this way, the full BEC population can be selectively transferred to the ground state to yield a single-level emission consisting of a spectral frequency comb with GHz repetition rates as well as picosecond-scale correlations. A theoretical model reproduces the observed time evolution and reveals a dynamical interplay between bosonic stimulation and the adiabatic Landau-Zener-like population transfer. Our approach provides a new avenue for the Floquet engineering of light-matter systems and enables tunable single- or multi-wavelength ultrafast pulsed laser-like emission for novel information technologies.

Figures

Figures reproduced from arXiv: 2506.05874 by the authors.

Figure 1
Figure 1. a) is based on a patterned hybrid phonon￾photon AlGaAs MC with multiple GaAs quantum wells (QWs) placed within the spacer region between two distributed Bragg reflectors (DBRs) [27]. The DBRs and the spacer are engineered to maximize the overlap between the strain field of electrically excited 7 GHz phonon and the optical 370 THz (∼1500 meV) photon modes at the QW positions. Both photonic and phononic states are ver… view at source ↗
Figure 2
Figure 2. a. The spectra are normalized in amplitude and vertically shifted for clarity. The energy scale is relative to the bare exciton energy (cf. panels Fig. 2a) and normalized to the modulation quantum h¯ΩM = 28.7 µeV. The sharp comb peaks are phonon sidebands displaced by h¯ΩM resulting from the modulation of the GS (i = 0) and of the first three excited states (i = 1,2,3), |Ψi⟩. d Same as c, but expanded over an energy… view at source ↗
Figure 3
Figure 3. FIG. 3 [PITH_FULL_IMAGE:figures/full_fig_p004_3.png] view at source ↗

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Works this paper leans on

50 extracted references · 49 canonical work pages

  1. [1]

    Weisbuch, M

    C. Weisbuch, M. Nishioka, A. Ishikawa, and Y . Arakawa, Observation of the coupled exciton- photon mode splitting in a semiconductor quantum microcavity, Phys. Rev. Lett.69, 3314 (1992)

    work page 1992

  2. [2]

    Kasprzak, M

    J. Kasprzak, M. Richard, S. Kundermann, A. Baas, P. Jeambrun, J. M. J. Keeling, F. M. Marchetti, M. H. Szyma´nska, R. André, J. L. Staehli, V . Savona, P. B. Littlewood, B. Deveaud, and L. S. Dang, Bose–Einstein condensation of exciton polaritons, Nature 443, 409 (2006)

    work page 2006

  3. [3]

    Wouters and I

    M. Wouters and I. Carusotto, Excitations in a nonequi- librium bose-einstein condensate of exciton polaritons, Phys. Rev. Lett. 99, 140402 (2007)

    work page 2007

  4. [5]

    Grosso, S

    G. Grosso, S. Trebaol, M. Wouters, F. Morier-Genoud, M. T. Portella-Oberli, and B. Deveaud, Nonlinear re- laxation and selective polychromatic lasing of confined polaritons, Phys. Rev. B - Condens. Matter Mater. Phys. 90, 045307 (2014)

    work page 2014

  5. [6]

    Wouters, T

    M. Wouters, T. C. Liew, and V . Savona, Energy relax- ation in one-dimensional polariton condensates, Phys. Rev. B - Condens. Matter Mater. Phys. 82, 245315 (2010)

    work page 2010

  6. [7]

    R. C. Schofield, M. Fu, E. Clarke, I. Farrer, A. Trapalis, H. S. Dhar, R. Mukherjee, T. Severs Millard, J. Hef- fernan, F. Mintert, R. A. Nyman, and R. F. Oulton, Bose–Einstein condensation of light in a semiconduc- tor quantum well microcavity, Nat. Photonics 18, 1083 (2024), arXiv:2306.15314

    work page Pith review arXiv 2024

  7. [8]

    Pieczarka, M

    M. Pieczarka, M. Ge ¸bski, A. N. Piasecka, J. A. Lott, A. Pelster, M. Wasiak, and T. Czyszanowski, Bose–Einstein condensation of photons in a vertical- cavity surface-emitting laser, Nat. Photonics 18, 1090 (2024)

    work page 2024

  8. [9]

    del Valle Inclan Redondo, X

    Y . del Valle Inclan Redondo, X. Xu, T. C. Liew, E. A. Ostrovskaya, A. Stegmaier, R. Thomale, C. Schnei- der, S. Dam, S. Klembt, S. Höfling, S. Tarucha, and M. D. Fraser, Non-reciprocal band structures in an exci- ton–polariton Floquet optical lattice, Nat. Photonics 18, 548 (2024)

    work page 2024

Show all 50 references
  1. [10]

    J. D. Töpfer, H. Sigurdsson, S. Alyatkin, and P. G. Lagoudakis, Lotka-V olterra population dynamics in co- herent and tunable oscillators of trapped polariton con- densates, Phys. Rev. B 102, 195428 (2020)

    2020

  2. [11]

    Ferrier, S

    L. Ferrier, S. Pigeon, E. Wertz, M. Bamba, P. Senellart, I. Sagnes, A. Lemàtre, C. Ciuti, and J. Bloch, Polari- ton parametric oscillation in a single micropillar cavity, Appl. Phys. Lett. 97, 031105 (2010)

    2010

  3. [12]

    D. N. Krizhanovskii, E. A. Cerda-Méndez, S. Gavrilov, D. Sarkar, K. Guda, R. Bradley, P. V . Santos, R. Hey, K. Biermann, M. Sich, F. Fras, and M. S. Skolnick, Ef- fect of polariton-polariton interactions on the excitation spectrum of a nonequilibrium condensate in a periodic ...

    2013

  4. [13]

    A. S. Kuznetsov, G. Dagvadorj, K. Biermann, M. Szy- manska, and P. V . Santos, Dynamically tuned arrays of polariton parametric oscillators, Optica 7, 1673 (2020)

    2020

  5. [14]

    Oka and S

    T. Oka and S. Kitamura, Floquet engineering of quan- tum materials, Annu. Rev. Condens. Matter Phys. 10, 387 (2019)

    2019

  6. [15]

    M. P. Silveri, J. A. Tuorila, E. V . Thuneberg, and G. S. Paraoanu, Quantum systems under frequency modula- tion, Reports Prog. Phys. 80, 056002 (2017)

    2017

  7. [16]

    O. V . Ivakhnenko, S. N. Shevchenko, and F. Nori, Nona- diabatic Landau–Zener–Stückelberg–Majorana transi- tions, dynamics, and interference, Phys. Rep. 995, 1 (2023)

    2023

  8. [17]

    Erglis, A

    A. Erglis, A. Sazhin, F. Vewinger, M. Weitz, S. Y . Buhmann, and J. Schmitt, Time-periodic driving of a bath-coupled open quantum gas of light, ArXiv (2025), arXiv:2502.14986

    2025 arXiv

  9. [18]

    M. M. De Lima and P. V . Santos, Modulation of pho- tonic structures by surface acoustic waves, Reports Prog. Phys. 68, 1639 (2005)

    2005

  10. [19]

    O. D. D. Couto, S. Lazic, F. Iikawa, J. A. H. Stotz, U. Jahn, R. Hey, and P. V . Santos, Photon anti-bunching in acoustically pumped quantum dots, Nat. Photonics3, 645 (2009)

    2009

  11. [20]

    Berstermann, A

    T. Berstermann, A. V . Scherbakov, A. V . Akimov, D. R. Yakovlev, N. A. Gippius, B. A. Glavin, I. Sagnes, J. Bloch, and M. Bayer, Terahertz polariton sidebands generated by ultrafast strain pulses in an optical semi- conductor microcavity, Phys. Rev. B80, 075301 (2009)

    2009

  12. [21]

    D. A. Fuhrmann, S. M. Thon, H. Kim, D. Bouwmeester, P. M. Petroff, A. Wixforth, and H. J. Krenner, Dynamic modulation of photonic crystal nanocavities using giga- hertz acoustic phonons, Nat. Photonics 5, 605 (2011)

    2011

  13. [22]

    Jusserand, A

    B. Jusserand, A. N. Poddubny, A. V . Poshakinskiy, A. Fainstein, and A. Lemaitre, Polariton Resonances for Ultrastrong Coupling Cavity Optomechanics in GaAs/AlAs Multiple Quantum Wells, Phys. Rev. Lett. 115, 267402 (2015)

    2015

  14. [23]

    M. Weiß, S. Kapfinger, T. Reichert, J. J. Finley, A. Wix- forth, M. Kaniber, and H. J. Krenner, Surface acoustic 8 wave regulated single photon emission from a coupled quantum dot–nanocavity system, Appl. Phys. Lett. 109, 033105 (2016)

    2016

  15. [24]

    Hernández-Mínguez, A

    A. Hernández-Mínguez, A. V . Poshakinskiy, M. Hol- lenbach, P. V . Santos, and G. V . Astakhov, Anisotropic Spin-Acoustic Resonance in Silicon Carbide at Room Temperature, Phys. Rev. Lett.125, 107702 (2020)

    2020

  16. [25]

    Sesin, A

    P. Sesin, A. S. Kuznetsov, G. Rozas, S. Anguiano, A. E. Bruchhausen, A. Lemaître, K. Biermann, P. V . Santos, and A. Fainstein, Giant optomechanical cou- pling and dephasing protection with cavity exciton- polaritons, Phys. Rev. Res. 5, L042035 (2023)

    2023

  17. [26]

    Berstermann, C

    T. Berstermann, C. Brüggemann, A. V . Akimov, M. Bombeck, D. R. Yakovlev, N. A. Gippius, A. V . Scherbakov, I. Sagnes, J. Bloch, and M. Bayer, Destruc- tion and recurrence of excitons by acoustic shock waves on picosecond time scales, Phys. Rev. B 86, 195306 (2012)

    2012

  18. [27]

    Fainstein, N

    A. Fainstein, N. D. Lanzillotti-Kimura, B. Jusserand, and B. Perrin, Strong optical-mechanical coupling in a vertical GaAs/AlAs microcavity for subterahertz phonons and near-infrared light, Phys. Rev. Lett. 110, 037403 (2013)

    2013

  19. [28]

    El Daif, A

    O. El Daif, A. Baas, T. Guillet, J.-P. Brantut, R. I. Kaitouni, J. L. Staehli, F. Morier-Genoud, and B. De- veaud, Polariton quantum boxes in semiconductor mi- crocavities, Appl. Phys. Lett. 88, 061105 (2006)

    2006

  20. [29]

    D. H. O. Machado, A. Crespo-Poveda, A. S. Kuznetsov, K. Biermann, L. V . A. Scalvi, and P. V . Santos, Gen- eration and propagation of super-high-frequency bulk acoustic wave in GaAs, Phys. Rev. Appl. 12, 1 (2019)

    2019

  21. [30]

    M. M. de Lima, M. van der Poel, P. V . Santos, and J. M. Hvam, Phonon-induced polariton superlattices, Phys. Rev. Lett. 97, 045501 (2006)

    2006

  22. [31]

    E. A. Cerda-Méndez, D. N. Krizhanovskii, M. Wouters, R. Bradley, K. Biermann, K. Guda, R. Hey, P. V . San- tos, D. Sarkar, and M. S. Skolnick, Polariton condensa- tion in dynamic acoustic lattices, Phys. Rev. Lett. 105, 116402 (2010)

    2010

  23. [32]

    A. S. Kuznetsov, D. H. O. Machado, K. Biermann, and P. V . Santos, Electrically Driven Microcavity Exciton- Polariton Optomechanics at 20 GHz, Phys. Rev. X 11, 021020 (2021)

    2021

  24. [33]

    A. S. Kuznetsov, P. L. J. Helgers, K. Biermann, and P. V . Santos, Quantum confinement of exciton-polaritons in a structured (Al,Ga)As microcavity, Phys. Rev. B 97, 195309 (2018)

    2018

  25. [34]

    A. S. Kuznetsov, K. Biermann, A. A. Reynoso, A. Fainstein, and P. V . Santos, Microcavity phonoritons – a coherent optical-to-microwave interface, Nat. Com- mun. 14, 5470 (2023)

    2023

  26. [35]

    Trigo, A

    M. Trigo, A. Bruchhausen, A. Fainstein, B. Jusserand, and V . Thierry-Mieg, Confinement of acoustical vibra- tions in a semiconductor planar phonon cavity, Phys. Rev. Lett. 89, 227402 (2002). Acknowledgments We acknowledge the funding from German DFG grant 359162958. The autho...

    2002 arXiv

  27. [36]

    Hence, three polariton modes are expected in each region

    Spatial dispersion of polariton energies The polariton modes of the sample arise from to the strong coupling between the light-hole (Xlh) and heavy-hole (Xhh) excitons and cavity photon modes in the spatially extended non-etched ( CnER) and etched (CER) regions of the cavity [...

  28. [37]

    the acoustic modulation amplitude

    Determination of maximum exciton energy modulation amplitude Figure SI 2 shows a dependence of the spectrum of a spatially extended non-etched cavity region vs. the acoustic modulation amplitude. The map was recorded at large negative detuning so that the lower polariton (LP) ...

  29. [38]

    Multi-mode condensation of confined polaritons The 4× 4 µm2 trap discussed in the main text provides deep confinement of approximately -10 meV , given by the difference between the low polariton energies in the etched and non-etched regions as follows from Fig. SI 1. Figure SI...

  30. [39]

    Acoustic control of confined condensates As discussed in the main text, large amplitude acoustic modulation has a profound effect on the spectral distri- bution of condensates emission intensity in the confined levels. Figure SI 4 shows a dependence of the integrated intensiti...

  31. [40]

    Linewidth dependence As discussed in the main text, above the condensation threshold in the absence of the modulation, the ground state (GS) of the trap is weakly populated, hence its linewidth is relatively broad, cf. Fig. 2d of the main text. The red circles of the Fig. SI 5...

  32. [41]

    3b of the main text were carried out using an interferometer schematically shown in Fig

    Auto-correlation setup Auto-correlation measurements shown in Fig. 3b of the main text were carried out using an interferometer schematically shown in Fig. SI 6a. The emission from the sample is first coupled into an optical fiber leading to the interferometer. At the fiber ou...

  33. [42]

    Auto-correlation for the excited state As discussed in the main text (cf. Fig. 2a&b), for large modulation amplitudes, excited states are significantly depleted, while the ground state contains most of the BEC population. In this case, the GS spectrum is a frequency comb of na...

  34. [43]

    The model In this section, we provide a more detailed account of the phenomenological model introduced in the main text, focusing on the key mechanisms that enable selective condensation in individual confined photonic levels. The model describes the time evolution of the pola...

  35. [44]

    (5) and (6), over six modulation periods ( TM) after the turn-on of the acoustic modulation

    Simulation of the modulation Figure SI 11a shows the time-evolution of the instantaneous energies of the coupled exciton-photon system, taking into account only the Hamiltonian part of Eqs. (5) and (6), over six modulation periods ( TM) after the turn-on of the acoustic modula...

  36. [45]

    Figure SI 12 shows two ground state (GS) spectra calculated for modulation amplitudes: a AM = 797∗ ¯hΩM and b AM = 551∗ ¯hΩM

    Simulated spectrum under modulation The model shows, in different parameters regimes, the spectral features observed for the condensate under acoustic modulation. Figure SI 12 shows two ground state (GS) spectra calculated for modulation amplitudes: a AM = 797∗ ¯hΩM and b AM =...

  37. [46]

    A. S. Kuznetsov, K. Biermann, A. A. Reynoso, A. Fainstein, and P. V . Santos, Microcavity phonoritons – a coherent optical- to-microwave interface, Nat. Commun. 14, 5470 (2023)

    2023

  38. [47]

    P. R. Eastham, Mode-locking and mode-competition in a non-equilibrium solid-state condensate, Phys. Rev. B 78, 035319 (2008)

    2008

  39. [48]

    Grosso, S

    G. Grosso, S. Trebaol, M. Wouters, F. Morier-Genoud, M. T. Portella-Oberli, and B. Deveaud, Nonlinear relaxation and selective polychromatic lasing of confined polaritons, Phys. Rev. B - Condens. Matter Mater. Phys.90, 045307 (2014)

    2014

  40. [49]

    A. S. Kuznetsov, K. Biermann, and P. V . Santos, Acceleration-induced spectral beats in strongly driven harmonic oscillators, Nat. Commun. 15, 5343 (2024)

    2024

  41. [50]

    Wouters and I

    M. Wouters and I. Carusotto, Excitations in a nonequilibrium bose-einstein condensate of exciton polaritons, Phys. Rev. Lett. 99, 140402 (2007)

    2007

  42. [51]

    Wouters, T

    M. Wouters, T. C. Liew, and V . Savona, Energy relaxation in one-dimensional polariton condensates, Phys. Rev. B - Con- dens. Matter Mater. Phys. 82, 245315 (2010)

    2010

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