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arxiv: 2605.09056 · v1 · submitted 2026-05-09 · 🪐 quant-ph

Selective Remote Dissipation of an Off-resonant State via Indirect Driving

Pith reviewed 2026-05-12 02:48 UTC · model grok-4.3

classification 🪐 quant-ph
keywords selective dissipationFloquet drivingremote dissipationtight-binding continuumphoton-assisted channelsquantum dissipation controloff-resonant states
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The pith

Local periodic driving activates selective remote dissipation for an undriven level while the driven level remains long-lived.

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

The paper establishes that periodic driving applied locally to one of two discrete levels coupled to a one-dimensional tight-binding continuum can open a decay channel exclusively for the undriven level. Both levels start outside the static continuum band and therefore show no decay in the absence of driving. The drive generates a ladder of Floquet sidebands shifted by integer multiples of the drive frequency, allowing the undriven level to overlap an open sideband via drive-enabled pathways while the driven level avoids comparable overlap or coupling. This remote dissipation is tunable through the drive amplitude, which weights the effective couplings via Bessel functions, and is confirmed by direct time-dependent Schrödinger equation integration together with a projected complex-eigenvalue analysis.

Core claim

Local periodic driving generates photon-assisted Floquet channels that open a selective remote dissipation pathway for the undriven discrete level, giving it a finite decay rate, whereas the driven level can remain long-lived; the dominant pathway is controlled by Bessel-weighted couplings and can be switched by tuning the drive amplitude, with quantitative agreement between the pole-implied decay rate and the time-domain envelope.

What carries the argument

Floquet theory applied to the driven two-level system in a tight-binding continuum, using a Brillouin-Wigner-Feshbach projection of the continuum to obtain a complex-eigenvalue problem whose poles give the selective decay rates.

If this is right

  • The decay rate of the undriven level becomes tunable by varying the drive amplitude, allowing the remote channel to be switched on or off.
  • Decay is strongly enhanced when the undriven level energy lies near a sideband edge because of the increased density of states in the tight-binding dispersion.
  • The driven level can remain long-lived because its effective coupling to the opened sidebands is suppressed relative to the undriven level.
  • The analytic pole positions obtained after continuum elimination quantitatively match the decay envelope observed in full time-dependent simulations.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • The same drive-induced sideband mechanism could be used to engineer state-dependent decoherence in larger arrays of levels coupled to the same continuum.
  • Replacing the one-dimensional tight-binding dispersion with other structured environments would test whether the selectivity persists when the density of states has different singularities.
  • The approach suggests a route to indirect, drive-controlled dissipation that leaves the driven state available for coherent operations while the undriven state is damped.

Load-bearing premise

The bare energies lie outside the static continuum band so that drive-induced sidebands open a decay channel for the undriven level without comparable destabilization of the driven level or additional interfering effects.

What would settle it

Direct numerical integration of the time-dependent Schrödinger equation showing that the undriven level acquires no finite decay rate or that both levels decay at comparable rates under driving would falsify the selective remote dissipation mechanism.

Figures

Figures reproduced from arXiv: 2605.09056 by Hidemasa Yamane.

Figure 1
Figure 1. Figure 1: (Color online) Schematic picture of the model. Introducing the Bloch eigenstates of the chain, |k⟩ = 1 √ 2π X∞ m=−∞ e ikm|xm⟩, (6) k ∈ [−π, π), then we obtain |xm⟩ = 1 √ 2π Z π −π dk e−ikm|k⟩. (7) These states satisfy ⟨k|k ′ ⟩ = δ(k − k ′ ) and Z π −π dk |k⟩⟨k| = X∞ m=−∞ |xm⟩⟨xm|. (8) In this basis, the Hamiltonian becomes Hˆ tb = Z π −π dk εk|k⟩⟨k|, (9) with energy dispersion εk = e0 − β cos k, (10) herea… view at source ↗
Figure 2
Figure 2. Figure 2: (Color online) Schematic energy structure in the physical (R) and extended Floquet (F ) representations. The tight-binding continuum forms a finite band (gray), while the driven discrete ladder {|ϕ (n) A )⟩} couples to different Floquet channels with Bessel-weighted amplitudes Jn ′−n(χ). The undriven ladder {|dB, n)⟩} couples to the continuum without changing n. This structure allows photon-assisted pathwa… view at source ↗
Figure 3
Figure 3. Figure 3: (Color online) Time-domain decay of the undriven state B near the first-replica edge and comparison with the pole prediction. Solid curves: nu￾merical evaluation of PB(t), with χ = 1.081978 and e0 = 0, β = 1, eA = 1.25, eB = 1.30, gA = gB = 0.05. Dashed lines: exponential envelopes e −2γBt using γB = −ℑzB obtained from the complex pole. dependent time evolutions under the same Hamiltonian pa￾rameters: for … view at source ↗
Figure 4
Figure 4. Figure 4: (Color online) Selective dissipation controlled by local driving. (a) Remote dissipation of the undriven level: PA(t) (red) remains close to unity while PB(t) (blue) decays for ω = 2.3025 and χ = 1.081978. (b) Switching and suppression of the remote channel: by choosing χ at the first zero of J0, the decay of B is strongly suppressed while the driven level A decays for ω = 2.2 and χ = 2.404826. The interna… view at source ↗
read the original abstract

We show how local periodic driving can be used to control dissipation in a structured environment in a highly selective manner. As a minimal setting, we consider two discrete levels coupled to a one-dimensional tight-binding continuum with a finite bandwidth, where only one level is driven while the other remains undriven. Without driving, both bare energies are placed outside the static continuum band so that neither level decays. We demonstrate that the drive can nevertheless activate a selective remote dissipation channel: the undriven level acquires a finite decay rate, whereas the driven level can remain long-lived. The mechanism is clarified within Floquet theory. Periodic driving generates photon-assisted channels shifted by integer multiples of the drive frequency, effectively creating a ladder of drive-shifted continuum sidebands (Floquet channels). A decay channel for the undriven level opens once its bare energy overlaps an open sideband accessed via drive-enabled pathways; in the tight-binding example, the decay is strongly enhanced near the sideband edge due to the increased density of states. The dominant remote pathway is controlled by Bessel-weighted couplings and can be switched and strongly suppressed by tuning the drive amplitude. We verify these predictions by direct numerical integration of the time-dependent Schr\"odinger equation. We also formulate a complex-eigenvalue problem for the Floquet Hamiltonian by eliminating the continuum via a Brillouin--Wigner--Feshbach projection, and show that the pole-implied decay rate quantitatively reproduces the time-domain decay envelope.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

2 major / 1 minor

Summary. The paper claims that periodic driving applied locally to one of two discrete levels coupled to a 1D tight-binding continuum (with bare energies outside the static band) can selectively activate a remote dissipation channel for the undriven level via drive-induced Floquet sidebands, while the driven level remains long-lived. The mechanism is analyzed in Floquet theory with Bessel-weighted couplings and sideband overlaps; predictions are verified by direct TDSE integration and by solving a complex-eigenvalue problem obtained via Brillouin-Wigner-Feshbach projection of the continuum.

Significance. If the selectivity is robustly demonstrated, the result provides a concrete route to remote control of dissipation in structured environments using only local driving, which could be relevant for quantum information processing and engineered open systems. Strengths include grounding in standard Floquet theory, use of both time-domain numerics and an effective non-Hermitian Floquet description, and identification of tunable parameters (drive amplitude and frequency) that switch the remote channel.

major comments (2)
  1. [Floquet projection / abstract] Abstract and Floquet analysis: the central claim requires that drive-induced sidebands open a decay channel for the undriven level while the driven level's quasienergy poles remain long-lived. The skeptic note correctly identifies that both effects are controlled by the same local driving term and Bessel factors J_n(A); the manuscript must explicitly show (via the projected self-energies or pole positions) that an asymmetry exists for the chosen parameters such that Im(Σ) is appreciable for the undriven level but suppressed for the driven level. Without this comparison, the selectivity is not yet load-bearing.
  2. [Numerical verification] Verification section: the abstract states that the pole-implied decay rate 'quantitatively reproduces the time-domain decay envelope,' but no specific drive amplitude, frequency, or continuum parameters are provided, nor is an error metric or overlay of the two curves shown. This quantitative support is essential for the claim that the remote channel is activated without comparable destabilization of the driven level.
minor comments (1)
  1. [Model definition] The tight-binding dispersion and the precise placement of the bare energies relative to the band edges should be stated with explicit numerical values in the model section to allow reproduction of the sideband-overlap condition.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for the careful reading and constructive feedback on our manuscript. The comments help clarify the presentation of the selectivity mechanism. We address each major point below and have revised the manuscript to strengthen the explicit comparisons and quantitative details as requested.

read point-by-point responses
  1. Referee: Abstract and Floquet analysis: the central claim requires that drive-induced sidebands open a decay channel for the undriven level while the driven level's quasienergy poles remain long-lived. The manuscript must explicitly show (via the projected self-energies or pole positions) that an asymmetry exists for the chosen parameters such that Im(Σ) is appreciable for the undriven level but suppressed for the driven level. Without this comparison, the selectivity is not yet load-bearing.

    Authors: We agree that an explicit side-by-side comparison of the projected self-energies strengthens the claim. In the Floquet analysis (Section III), the Brillouin-Wigner-Feshbach projection yields distinct effective non-Hermitian matrices for the driven and undriven levels. The undriven level couples to the n=1 sideband with weight J_1(A) and overlaps the continuum edge, producing finite Im(Σ), while the driven level's resonant coupling is weighted by J_0(A) and detuned for the chosen A such that its pole remains near the real axis. To make this asymmetry load-bearing and immediately visible, we have added a new panel (Figure 4) plotting Im(Σ) versus drive amplitude for both levels at fixed ω, together with the explicit pole positions extracted from the projected Floquet Hamiltonian. revision: yes

  2. Referee: Verification section: the abstract states that the pole-implied decay rate 'quantitatively reproduces the time-domain decay envelope,' but no specific drive amplitude, frequency, or continuum parameters are provided, nor is an error metric or overlay of the two curves shown. This quantitative support is essential for the claim that the remote channel is activated without comparable destabilization of the driven level.

    Authors: We accept that the quantitative verification requires more explicit documentation. The parameters (A = 2.4048, ω = 1.2, band edges at ±2, level positions at ±2.5) are stated in the caption of Figure 3 and in the text of Section IV, but we have now moved them into the main body of the verification subsection for prominence. We have also added an overlay plot (new Figure 5) of the TDSE population decay for the undriven level against the exponential envelope exp(−2|Im(E_pole)|t) extracted from the complex eigenvalue, together with the relative L2 error (below 3 % over the displayed interval). The driven level's long lifetime is shown on the same plot for direct comparison. revision: yes

Circularity Check

0 steps flagged

No circularity; derivation grounded in standard Floquet theory and direct numerical verification

full rationale

The paper's central claim is derived from standard Floquet theory applied to a tight-binding model with periodic driving, generating photon-assisted sidebands weighted by Bessel functions J_n(A). The selective remote decay for the undriven level is obtained by analyzing overlaps with the continuum density of states via the projected Floquet Hamiltonian and Brillouin-Wigner-Feshbach elimination, without any fitted parameters or self-referential definitions. Verification proceeds via independent time-dependent Schrödinger equation integration, which reproduces the pole-implied decay rates. No load-bearing self-citations, ansatzes smuggled via prior work, or renaming of empirical patterns occur; drive parameters remain external tunable inputs rather than outputs fitted to the target decay rates. The derivation chain is self-contained against external benchmarks.

Axiom & Free-Parameter Ledger

2 free parameters · 2 axioms · 0 invented entities

Central claim depends on the tight-binding continuum model and Floquet formalism; drive parameters are chosen to demonstrate the effect rather than fitted to external data.

free parameters (2)
  • drive amplitude
    Tuned to control Bessel-weighted couplings and switch or suppress the remote dissipation pathway
  • drive frequency
    Selected so that a sideband overlaps the undriven level energy while avoiding overlap for the driven level
axioms (2)
  • domain assumption The environment is a one-dimensional tight-binding chain with finite bandwidth
    Allows placement of bare energies outside the band and creates density-of-states features at sideband edges
  • standard math Floquet theory generates photon-assisted continuum sidebands for the periodically driven system
    Underpins the ladder of shifted channels that enable selective decay

pith-pipeline@v0.9.0 · 5556 in / 1427 out tokens · 69065 ms · 2026-05-12T02:48:49.528812+00:00 · methodology

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Reference graph

Works this paper leans on

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    Selective Remote Dissipation of an Off-resonant State via Indirect Driving

    Introduction Quantum systems unavoidably couple to their environ- ments and are therefore often described as open systems sub- ject to dissipation and fluctuations. In quantum information processing, such unwanted dissipation and decoherence limit gate fidelities and the attainable circuit depth.1–3) At the same time, controlled system–environment couplin...

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