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REVIEW 3 major objections 6 minor 44 references

High-efficiency telecom frequency conversion via a diamond-type atomic ensemble

T0 review · 3 major / 6 minor · reviewed 2026-08-07 · deepseek-v4-flash

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Pith's one-line read Diamond-type four-wave mixing in a cold rubidium-87 ensemble converts 795 nm light to 1367 nm at 66% and 80% efficiency for optical depths of 75 and 110.

desk verdict Solid experimental advance, but the record claim at OD 75 rests on an unquantified calibration that could wipe out the one-point margin over the previous best. read the letter →

arxiv 2506.03957 v1 pith:OSY5UZG3 submitted 2025-06-04 quant-ph

Ling-Chun Chen , Meng-Yi Lin , Jiun-Shiuan Shiu , Xuan-Qing Zhong , Po-Han Tseng , Yong-Fan Chen This is my paper
classification quant-ph
keywords telecomfrequencyconversionfour-wavemixingcoldrubidiumensembleelectromagneticallyinducedtransparencyquantumdiamond-typeatomicsystemopticaldepthAutler-Townessplitting
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 a frequency converter that shifts 795 nm light to 1367 nm telecom light using a cold gas of rubidium-87 atoms, reaching 66% conversion efficiency at optical depth 75 and 80% at optical depth 110. The authors claim these numbers surpass every previously reported conversion efficiency in atomic systems for this kind of interface. The conversion is driven by diamond-type four-wave mixing, and the paper shows that the two built-in electromagnetically induced transparency mechanisms, V-type and cascade-type, explain where the optimum operating point sits. The practical interest is that atom-based quantum nodes emit near-infrared photons, and a high-efficiency converter is the missing link to sending those photons through low-loss telecom fiber.

What carries the argument

The load-bearing mechanism is diamond-type four-wave mixing in a Zeeman-sublevel structure of 87Rb: a 795 nm probe, a 780 nm coupling field, and a 1324 nm driving field act on four levels connected in a diamond, and phase matching produces a 1367 nm signal. The coherence between the two upper levels is maintained through a cycling transition on the lower transition, and the detuned coupling field creates an Autler-Townes shift that changes the optimal detunings. The theory uses Heisenberg–Langevin and Maxwell–Schrödinger equations to derive a scattering matrix whose off-diagonal entry $C(0)$ gives the conversion efficiency $\eta_s = |C(0)|^2$; the vacuum-noise coefficients do not enter the probe transmission $T_p$ or $\eta_s$, which is why the scheme is argued to preserve quantum states.

What would settle it

Remeasure the conversion efficiency with the neutral-density filter replaced by a calibrated attenuator and with independent power meters at the input and output, then compare the corrected values at optical depths 75 and 110; if the corrected efficiency at OD 75 falls at or below 65% or the OD 110 value falls below 80%, the central claim of surpassing all previous atomic-system efficiencies would need revision.

Watch

Extended reading notes

Core claim

The central claim is that diamond-type four-wave mixing in a cold 87Rb ensemble converts a weak coherent 795 nm probe into 1367 nm light with conversion efficiency $\eta_s = 66\%$ at OD 75 and $\eta_s = 80\%$ at OD 110, exceeding the 65% previously reported in atomic systems and approaching the theoretical prediction of more than 80% at moderate optical depth. The authors attribute the improvement to a single-Zeeman-sublevel cycling transition that avoids population loss, combined with a detuned coupling field whose Autler-Townes shift moves the optimum two-photon detuning away from resonance. They also show that the measured V-type and cascade-type EIT spectra match theory and that the same optimized parameter set works for frequency up-conversion, with $\eta_p \approx \eta_s$. The demonstration uses a weak coherent field, not a single-photon input, so the claim that quantum states are preserved comes from the earlier theoretical framework and has not yet been tested experimentally.

Load-bearing premise

The absolute conversion efficiencies are obtained by dividing measured counts by the transmission of the detection path, dominated by a neutral-density filter with a nominal 1% transmission and a signal path around 75%, so a few percent error in those calibration factors would change the reported 66% and 80%.

Editorial extensions

If this is right

  • At optical depth 110 the conversion efficiency reaches 80%, which the paper claims surpasses all previously reported values in atomic systems.
  • The theoretical model predicts roughly 90% efficiency at optical depth 200, so the same scheme should approach near-unity conversion with denser ensembles.
  • The optimized parameters also maximize up-conversion back to 795 nm, so the scheme can act as a bidirectional frequency interface between rubidium memories and telecom fiber.
  • Because the noise terms drop out of the steady-state transmission and conversion expressions, the paper argues that the conversion process can preserve quantum states at high efficiency when a quantum input is used.

Reading between the lines

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

  • The reported 66% at optical depth 75 sits only one percentage point above the 65% claimed in a prior copolarized study, so the record margin depends on the absolute calibration of the detection chain.
  • The natural next experiment is to send a heralded single photon or an entangled photon pair through the same converter and measure the output correlation functions; this paper does not perform that test.
  • If laser linewidth is what washes out the predicted spectral oscillations at high optical depth, narrower-linewidth lasers could reveal the full structure and possibly improve efficiency further.
  • A fully bidirectional telecom-to-rubidium interface would follow if the computed up-conversion path is realized experimentally, but the paper only calculates it.
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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 / 6 minor

Summary. The paper reports an experimental demonstration of telecom frequency conversion from 795 nm to 1367 nm via diamond-type four-wave mixing in a cold 87Rb ensemble. The authors measure conversion efficiencies of 66% at an optical depth of 75 and 80% at an optical depth of 110 using a 200 nW coherent probe pulse. They also measure the associated V-type and cascade-type electromagnetically induced transparency spectra and compare them with a theoretical model based on Heisenberg-Langevin and Maxwell-Schrödinger equations. The central claim is that these efficiencies surpass all previously reported values for atomic systems.

Significance. If the measured efficiencies are robust, this work constitutes a meaningful advance: it reports record conversion efficiency at a lower optical depth than prior experiments (OD 75 versus approximately 150 for the previous 65% result), and the systematic characterization of the built-in EIT spectra provides practical guidance for parameter optimization. The experimental description is detailed, including the timing sequence, beam parameters, and detection paths. However, the headline record claim rests entirely on the absolute calibration of two detection paths, and the paper provides no uncertainty budget or independent calibration anchor. The comparison with prior single-photon-level experiments is also not fully substantiated, since the present measurement uses a bright coherent pulse containing many photons. These issues currently limit the strength of the central claim, although they appear addressable within the scope of a revision.

major comments (3)
  1. [II and IV.A] The absolute conversion efficiencies quoted in Sec. IV.A (66% and 80%) are obtained by dividing measured PMT count ratios by the detection-path efficiencies given in Sec. II: 'approximately 0.2%' for the probe and 'approximately 75%' for the signal. The paper provides no uncertainty budget, no measured tolerances for the component transmissions (including the neutral-density filter described only as having 1% transmission), and no independent calibration check of the PMT gains (stated as 164 mV/nW and 0.065 mV/nW without uncertainties). Because the claimed 66% result is only 1 percentage point above the previous 65% record (Ref. [27]), a relative calibration error of a few percent in either detection path would erase the claimed distinction. The authors should provide a full propagation-of-errors analysis and anchor the absolute scale with an independent reference measurement, for example by comparing the inferred incident probe power with a calibrated power meter at the interaction region.
  2. [IV (comparison with Refs. [26,27]) and Conclusions] The abstract states that the results 'surpass all previously reported values in atomic systems,' while the conclusion specifies 'exceed previously demonstrated efficiencies in cold atomic systems using single-photon-level inputs.' The present measurement uses a 200 nW coherent probe pulse, corresponding to roughly 10^5 photons per 200 ns, whereas Refs. [26] and [27] operated at single-photon level. If any power-dependent mechanism affects the conversion efficiency (e.g., two-photon absorption, saturation, or nonlinear loss), the comparison is not apples-to-apples. The authors should either demonstrate explicitly that the inferred efficiency is independent of input photon number by measuring eta_s at several probe powers, or qualify the record claim to the specific coherent-state regime investigated. As written, the conclusion overclaims beyond what the experiment demonstrates.
  3. [III and Figs. 3, 4] The theoretical model contains free parameters (the atomic decoherence rates gamma_jk in the Heisenberg-Langevin equations), but the manuscript does not state how these rates are chosen, whether they are taken from the prior theoretical work [15], from independent linewidth measurements, or fitted to the present spectra. Without this information, the agreement between the theoretical curves and the experimental data in Figs. 3 and 4 cannot be assessed as a genuine prediction, and the statement that the spectral trends are 'consistent with the theoretical predictions' is not fully supported. The authors should specify the values of gamma_jk used for the plotted curves and indicate whether any fitting was performed.
minor comments (6)
  1. [IV.A] The headline efficiencies (66% and 80%) are quoted without explicit error bars in the text, even though the figure captions mention standard deviations from 8 data points; please provide the standard deviation or confidence interval for these peak values.
  2. [IV.B] The 'combined laser linewidth of approximately 5 MHz' is not defined; please clarify how this value was measured or estimated, and whether it is the sum of the linewidths of all three lasers.
  3. [II and IV] The manuscript uses 'approximately' for several quantitative values (e.g., 0.2%, 75%, 5 MHz); replacing these with measured values and tolerances would strengthen the quantitative claims.
  4. [Figs. 3 and 4] In the FWM spectra, the green experimental squares for eta_s are plotted without visible error bars; consider enlarging the symbols or adding error bars to these points in the final figures.
  5. [Abstract vs. Conclusions] The abstract says 'surpass all previously reported values in atomic systems' while the conclusion says 'exceed previously demonstrated efficiencies in cold atomic systems using single-photon-level inputs'; please harmonize the wording to avoid overstatement.
  6. [III] Equation (5) and the accompanying claim that Tp and eta_s are independent of vacuum noise are stated without derivation; please add a brief explanation or a more explicit reference to Ref. [15] so that the reader can follow the logic without consulting that paper.

Circularity Check

0 steps flagged · score 0.0 of 10

No significant circularity: the reported conversion efficiencies are direct experimental measurements; self-citations to prior theory are testable context, not inputs that force the measured values.

full rationale

The paper's central claim—66% and 80% telecom conversion efficiencies at OD 75 and 110—is an experimental measurement, not a quantity derived from the model. The measured ηs values are obtained from PMT count ratios using stated detection-path efficiencies for the probe and signal fields (Sec. II), while the theoretical model is used to predict spectra and guide parameter choice (Secs. III–IV); the data are compared with those predictions rather than generated by them. Citations to the authors' prior work [15,41] supply the theoretical framework and the quantum-state-preservation argument, but those are separate calculations with stated assumptions (OD, Rabi frequencies, detunings) and do not take the reported efficiencies as inputs. The paper also explicitly defers experimental verification of quantum fidelity to future work. No step in the derivation reduces, by construction, to its own inputs. The unquantified absolute detection calibration in Sec. II is a measurement-uncertainty concern, not a circularity, and does not change this verdict.

Assumptions & free parameters 1 free parameters · 3 assumptions · 0 invented entities

The central claim is an experimental measurement, so the ledger mostly captures supporting model assumptions and calibration dependencies. No new physical entities are introduced.

free parameters (1)
  • atomic decoherence rates gamma_jk in the HLE model
    The theoretical model in Sec. III (Eqs. 1-5) requires decoherence rates for transitions among the four levels. The paper does not report their values or how they were set, so the model curves in Figs. 3 and 4 are not fully reproducible.
assumptions (3)
  • domain assumption The Heisenberg-Langevin and Maxwell-Schrodinger model (Eqs. 1-5) accurately describes diamond-type FWM and its noise properties.
    This model is taken from the authors' own prior work [15] and [41]; it is used to interpret the spectra and to justify quantum-state preservation, but not to produce the measured efficiencies.
  • domain assumption The selected Zeeman sublevels form a closed cycling transition between states |1> and |3>, eliminating population loss.
    Stated in Sec. II; if stray magnetic fields or off-resonant excitations break the cycling condition, the efficiency would be reduced.
  • domain assumption The probe is weak enough that the driving field can be treated as a constant and the response linearized.
    Sec. III treats Omega_d as constant for a weak input field; the 200 nW probe pulse makes this plausible.

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Cite this review

Pith. "Pith review of High-efficiency telecom frequency conversion via a diamond-type atomic ensemble." pith.science (2026). https://pith.science/paper/OSY5UZG3

@misc{pith2026250603957,
  author       = {Pith},
  title        = {Pith review of: High-efficiency telecom frequency conversion via a diamond-type atomic ensemble},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/OSY5UZG3}},
  note         = {Machine review of arXiv:2506.03957}
}
read the original abstract

Efficient telecom frequency conversion (TFC) in atomic systems is crucial for integrating atom-based quantum nodes into low-loss fiber-optic quantum networks. Here, we demonstrate high-efficiency TFC from 795 nm to 1367 nm in a cold 87Rb ensemble via diamond-type four-wave mixing (FWM), achieving conversion efficiencies of 66% and 80% at optical depths of 75 and 110, respectively, using a weak coherent probe field. These results surpass all previously reported values in atomic systems, enabled by a systematic investigation of the built-in V-type and cascade-type electromagnetically induced transparency spectra that guided the optimization of FWM conditions. Although this work employs coherent fields, our previous theoretical study has shown that quantum states can be preserved with high fidelity during the conversion process, highlighting the promise of diamond-type atomic FWM as a robust interface for long-distance quantum communication.

Figures

Figures reproduced from arXiv: 2506.03957 by the authors.

Figure 1
Figure 1. FIG. 1. Diagram of the diamond-type FWM and experi [PITH_FULL_IMAGE:figures/full_fig_p002_1.png] view at source ↗
Figure 2
Figure 2. FIG. 2. Timing sequence for the diamond-type FWM ex [PITH_FULL_IMAGE:figures/full_fig_p003_2.png] view at source ↗
Figure 3
Figure 3. FIG. 3. Spectra in the bright MOT with OD = 75, Ω [PITH_FULL_IMAGE:figures/full_fig_p004_3.png] view at source ↗
Figures from the paper (1 more)
Figure 4
Figure 4. Figure 4: FIG. 4. Spectra in the dark SPOT with OD = 110, [PITH_FULL_IMAGE:figures/full_fig_p005_4.png]

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Works this paper leans on

44 extracted references · 35 canonical work pages

  1. [15]

    Tseng, L.-C

    P.-H. Tseng, L.-C. Chen, J.-S. Shiu, and Y.-F. Chen, Quantum interface for telecom frequency conversion based on diamond-type atomic ensembles, Phys. Rev. A 109, 043716 (2024)

    work page 2024

  2. [27]

    Y. O. Dudin, A. G. Radnaev, R. Zhao, J. Z. Blumoff, T. A. B. Kennedy, and A. Kuzmich, Entanglement of light- shift compensated atomic spin waves with telecom light, Phys. Rev. Lett. 105, 260502 (2010)

    work page 2010

  3. [26]

    A. G. Radnaev, Y. O. Dudin, R. Zhao, H. H. Jen, S. D. Jenkins, A. Kuzmich, and T. A. B. Kennedy, A quan- tum memory with telecom-wavelength conversion, Na- ture Phys. 6, 894 (2010)

    work page 2010

  4. [1]

    H. J. Kimble, The quantum internet, Nature 453, 1023 (2008)

    2008

  5. [2]

    van Leent, M

    T. van Leent, M. Bock, F. Fertig, R. Garthoff, S. Eppelt, Y. Zhou, P. Malik, M. Seubert, T. Bauer, W. Rosen- feld, W. Zhang, C. Becher, and H. Weinfurter, Entan- gling single atoms over 33 km telecom fibre, Nature 607, 69 (2022)

    work page 2022

  6. [3]

    X.-Y. Luo, Y. Yu, J.-L. Liu, M.-Y. Zheng, C.-Y. Wang, B. Wang, J. Li, X. Jiang, X.-P. Xie, Q. Zhang, X.-H. Bao, and J.-W. Pan, Postselected entanglement between two atomic ensembles separated by 12.5 km, Phys. Rev. Lett. 129, 050503 (2022)

    work page 2022

  7. [4]

    Azuma, S

    K. Azuma, S. E. Economou, D. Elkouss, P. Hilaire, L. Jiang, H.-K. Lo, and I. Tzitrin, Quantum repeaters: From quantum networks to the quantum internet, Rev. Mod. Phys. 95, 045006 (2023)

    2023

  8. [5]

    A. K. Ekert, Quantum cryptography based on Bell’s the- orem, Phys. Rev. Lett. 67, 661 (1991)

    1991

Show all 44 references
  1. [6]

    Gisin, G

    N. Gisin, G. Ribordy, W. Tittel, and H. Zbinden, Quan- tum cryptography, Rev. Mod. Phys. 74, 145 (2002)

    2002

  2. [7]

    D. P. Nadlinger, P. Drmota, B. C. Nichol, G. Araneda, D. Main, R. Srinivas, D. M. Lucas, C. J. Ballance, K. Ivanov, E. Y.-Z. Tan, P. Sekatski, R. L. Urbanke, R. Renner, N. Sangouard, and J.-D. Bancal, Experimental quantum key distribution certified by Bell’s theorem, Nature 60...

    2022

  3. [8]

    C. H. Bennett, G. Brassard, C. Cr´ epeau, R. Jozsa, A. Peres, and W. K. Wootters, Teleporting an unknown quantum state via dual classical and Einstein-Podolsky- Rosen channels, Phys. Rev. Lett. 70, 1895 (1993)

    1993

  4. [9]

    Bouwmeester, J.-W

    D. Bouwmeester, J.-W. Pan, K. Mattle, M. Eibl, H. We- infurter, and A. Zeilinger, Experimental quantum tele- portation, Nature 390, 575 (1997)

    1997

  5. [10]

    X.-S. Ma, T. Herbst, T. Scheidl, D. Wang, S. Kropatschek, W. Naylor, B. Wittmann, A. Mech, J. Kofler, E. Anisimova, V. Makarov, T. Jennewein, R. Ursin, and A. Zeilinger, Quantum teleportation over 143 kilometres using active feed-forward, Nature 489, 269 (2012)

    2012

  6. [11]

    Valivarthi, S

    R. Valivarthi, S. I. Davis, C. Pe˜ na, S. Xie, N. Lauk, L. Narv´ aez, J. P. Allmaras, A. D. Beyer, Y. Gim, M. Hus- sein, G. Iskander, H. L. Kim, B. Korzh, A. Mueller, M. Rominsky, M. Shaw, D. Tang, E. E. Wollman, C. Simon, P. Spentzouris, D. Oblak, N. Sinclair, and M. Spiropul...

    2020

  7. [12]

    X. Cao, M. Zopf, and F. Ding, Telecom wavelength single photon sources, J. Semicond. 40, 071901 (2019)

    2019

  8. [13]

    Gogyan, Qubit transfer between photons at telecom and visible wavelengths in a slow-light atomic medium, Phys

    A. Gogyan, Qubit transfer between photons at telecom and visible wavelengths in a slow-light atomic medium, Phys. Rev. A 81, 024304 (2010)

    2010

  9. [14]

    H. H. Jen and T. A. B. Kennedy, Efficiency of light- frequency conversion in an atomic ensemble, Phys. Rev. A 82, 023815 (2010)

    2010

  10. [16]

    L.-M. Duan, M. D. Lukin, J. I. Cirac, and P. Zoller, Long- distance quantum communication with atomic ensembles and linear optics, Nature 414, 413 (2001)

    2001

  11. [17]

    Kumar, Quantum frequency conversion, Opt

    P. Kumar, Quantum frequency conversion, Opt. Lett.15, 1476 (1990). 7

    1990

  12. [18]

    K. D. Greve, L. Yu, P. L. McMahon, J. S. Pelc, C. M. Natarajan, N. Y. Kim, E. Abe, S. Maier, C. Schneider, M. Kamp, S. H¨ ofling, R. H. Hadfield, A. Forchel, M. M. Fejer, and Y. Yamamoto, Quantum-dot spin–photon entanglement via frequency downconversion to telecom wavelength, ...

    2012

  13. [19]

    M. Bock, P. Eich, S. Kucera, M. Kreis, A. Lenhard, C. Becher, and J. Eschner, High-fidelity entanglement be- tween a trapped ion and a telecom photon via quantum frequency conversion, Nat. Commun. 9, 1998 (2018)

    2018

  14. [20]

    Strobel, S

    T. Strobel, S. Kazmaier, T. Bauer, M. Sch¨ afer, A. Choud- hary, N. L. Sharma, R. Joos, C. Nawrath, J. H. We- ber, W. Nie, G. Bhayani, L. Wagner, A. Bisquerra, M. Geitz, R.-P. Braun, C. Hopfmann, S. L. Portalupi, C. Becher, and P. Michler, High-fidelity distribution of trig- g...

    2024

  15. [21]

    Y. Yu, F. Ma, X.-Y. Luo, B. Jing, P.-F. Sun, R.-Z. Fang, C.-W. Yang, H. Liu, M.-Y. Zheng, X.-P. Xie, W.- J. Zhang, L.-X. You, Z. Wang, T.-Y. Chen, Q. Zhang, X.-H. Bao, and J.-W. Pan, Entanglement of two quan- tum memories via fibres over dozens of kilometres, Na- ture 578, 240 (2020)

    2020

  16. [22]

    Z.-Y. Zhou, Y. Li, D.-S. Ding, W. Zhang, S. Shi, B.-S. Shi, and G.-C. Guo, Orbital angular momentum photonic quantum interface, Light Sci. Appl. 5, e16019 (2016)

    2016

  17. [23]

    R. T. Willis, F. E. Becerra, L. A. Orozco, and S. L. Rol- ston, Four-wave mixing in the diamond configuration in an atomic vapor, Phys. Rev. A 79, 033814 (2009)

    2009

  18. [24]

    F. E. Becerra, R. T. Willis, S. L. Rolston, H. J. Carmichael, and L. A. Orozco, Nondegenerate four-wave mixing in rubidium vapor: Transient regime, Phys. Rev. A 82, 043833 (2010)

    2010

  19. [25]

    Jeong, H

    H. Jeong, H. Kim, J. Bae, J. Park, and H. S. Moon, Doppler-broadened four-wave mixing under double- resonance optical pumping in the 5 S1/2–5P3/2–4D5/2 transition of warm 87Rb atoms, Opt. Express 29, 42384 (2021)

    2021

  20. [28]

    Zhang, Y.-H

    W.-H. Zhang, Y.-H. Ye, L. Zeng, M.-X. Dong, E.-Z. Li, J.-Y. Peng, Y. Li, D.-S. Ding, and B.-S. Shi, Telecom- wavelength conversion in a high optical depth cold atomic system, Opt. Express 31, 8042 (2023)

    2023

  21. [29]

    Ikuta, Y

    R. Ikuta, Y. Kusaka, T. Kitano, H. Kato, T. Yamamoto, M. Koashi, and N. Imoto, Wide-band quantum interface for visible-to-telecommunication wavelength conversion, Nat. Commun. 2, 537 (2011)

    2011

  22. [30]

    Zaske, A

    S. Zaske, A. Lenhard, C. A. Keßler, J. Kettler, C. Hepp, C. Arend, R. Albrecht, W.-M. Schulz, M. Jetter, P. Mich- ler, and C. Becher, Visible-to-telecom quantum frequency conversion of light from a single quantum emitter, Phys. Rev. Lett. 109, 147404 (2012)

    2012

  23. [31]

    van Leent, M

    T. van Leent, M. Bock, R. Garthoff, K. Redeker, W. Zhang, T. Bauer, W. Rosenfeld, C. Becher, and H. We- infurter, Long-distance distribution of atom-photon en- tanglement at telecom wavelength, Phys. Rev. Lett. 124, 010510 (2020)

    2020

  24. [32]

    Wengerowsky, S

    S. Wengerowsky, S. Duranti, L. Heller, and H. de Ried- matten, Quantum frequency conversion of photons with microsecond duration from the visible to the telecommu- nication C band, Phys. Rev. Appl. 23, 024049 (2025)

    2025

  25. [33]

    Hamer, S

    A. Hamer, S. M. R. Tabar, P. Yashwantrao, A. Aghababaei, F. Vewinger, and S. Stellmer, Frequency conversion to the telecom O-band using pressurized hy- drogen, Opt. Lett. 49, 506 (2024)

    2024

  26. [34]

    Hamer, F

    A. Hamer, F. Vewinger, T. Peters, M. H. Frosz, and S. Stellmer, Frequency conversion in a hydrogen-filled hollow-core fiber using continuous-wave fields, Opt. Lett. 49, 6952 (2024)

    2024

  27. [35]

    J. A. Rowland, C. Perrella, R. F. Offer, A. N. Luiten, B. M. Sparkes, and T. J. Weinhold, Characterization of near-infrared to telecom frequency conversion in a rubidium-filled hollow-core photonic-crystal fiber, Opt. Express 33, 18076 (2025)

    2025

  28. [36]

    Kang and H.-R

    H.-J. Kang and H.-R. Noh, Coherence effects in electro- magnetically induced transparency in V-type systems of 87Rb, Opt. Express 25, 21762 (2017)

    2017

  29. [37]

    C. R. Higgins and I. G. Hughes, Electromagnetically in- duced transparency in a V-system with 87Rb vapour in the hyperfine Paschen-Back regime, J. Phys. B: At. Mol. Opt. Phys. 54, 165403 (2021)

    2021

  30. [38]

    J. Wang, L. B. Kong, X. H. Tu, K. J. Jiang, K. Li, H. W. Xiong, Y. Zhu, and M. S. Zhan, Electromagnetically induced transparency in multi-level cascade scheme of cold rubidium atoms, Phys. Lett. A 328, 437 (2004)

    2004

  31. [39]

    Kumar, V

    R. Kumar, V. Gokhroo, and S. N. Chormaic, Multi- level cascaded electromagnetically induced transparency in cold atoms using an optical nanofibre interface, New J. Phys. 17, 123012 (2015)

    2015

  32. [40]

    Ketterle, K

    W. Ketterle, K. B. Davis, M. A. Joffe, A. Martin, and D. E. Pritchard, High densities of cold atoms in a dark spontaneous-force optical trap, Phys. Rev. Lett. 70, 2253 (1993)

    1993

  33. [41]

    Cheng, J.-J

    C.-Y. Cheng, J.-J. Lee, Z.-Y. Liu, J.-S. Shiu, and Y.-F. Chen, Quantum frequency conversion based on resonant four-wave mixing, Phys. Rev. A 103, 023711 (2021)

    2021

  34. [42]

    Liu, J.-S

    Z.-Y. Liu, J.-S. Shiu, C.-Y. Cheng, and Y.-F. Chen, Con- trolling frequency-domain Hong-Ou-Mandel interference via electromagnetically induced transparency, Phys. Rev. A 108, 013702 (2023)

    2023

  35. [43]

    Shiu, Z.-Y

    J.-S. Shiu, Z.-Y. Liu, C.-Y. Cheng, Y.-C. Huang, I. A. Yu, Y.-C. Chen, C.-S. Chuu, C.-M. Li, S.-Y. Wang, and Y.-F. Chen, Observation of highly correlated ultrabright bipho- tons through increased atomic ensemble density in spon- taneous four-wave mixing, Phys. Rev. Res. 6, L03...

    2024

  36. [44]

    Shiu, C.-W

    J.-S. Shiu, C.-W. Lin, Y.-C. Huang, M.-J. Lin, I.- C. Huang, T.-H. Wu, P.-C. Kaun, and Y.-F. Chen, Frequency-tunable biphoton generation via spontaneous four-wave mixing, Phys. Rev. A 110, 063723 (2024)

    2024

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