Cavity-enhanced room-temperature broadband Raman memory

D. J. Saunders, J. H. D. Munns, T. F. M. Champion, C. Qiu, K. T. Kaczmarek, E. Poem, P. M. Ledingham, I. A. Walmsley, J. Nunn

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Abstract

Broadband quantum memories hold great promise as multiplexing elements in future photonic quantum information protocols. Alkali-vapor Raman memories combine high-bandwidth storage, on-demand readout, and operation at room temperature without collisional fluorescence noise. However, previous implementations have required large control pulse energies and have suffered from four-wave-mixing noise. Here, we present a Raman memory where the storage interaction is enhanced by a low-finesse birefringent cavity tuned into simultaneous resonance with the signal and control fields, dramatically reducing the energy required to drive the memory. By engineering antiresonance for the anti-Stokes field, we also suppress the four-wave-mixing noise and report the lowest unconditional noise floor yet achieved in a Raman-type warm vapor memory, (15±2)×10−3 photons per pulse, with a total efficiency of (9.5±0.5)%.
Original languageEnglish
Article number090501
Pages (from-to)1-5
Number of pages5
JournalPhysical Review Letters
Volume116
Issue number9
Early online date3 Mar 2016
DOIs
Publication statusPublished - 4 Mar 2016

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broadband
cavities
room temperature
four-wave mixing
vapors
pulses
multiplexing
low noise
readout
alkalies
engineering
photonics
bandwidth
fluorescence
energy
photons
interactions

Cite this

Saunders, D. J., Munns, J. H. D., Champion, T. F. M., Qiu, C., Kaczmarek, K. T., Poem, E., ... Nunn, J. (2016). Cavity-enhanced room-temperature broadband Raman memory. Physical Review Letters, 116(9), 1-5. [090501]. https://doi.org/10.1103/PhysRevLett.116.090501

Cavity-enhanced room-temperature broadband Raman memory. / Saunders, D. J.; Munns, J. H. D. ; Champion, T. F. M.; Qiu, C.; Kaczmarek, K. T.; Poem, E.; Ledingham, P. M.; Walmsley, I. A.; Nunn, J.

In: Physical Review Letters, Vol. 116, No. 9, 090501, 04.03.2016, p. 1-5.

Research output: Contribution to journalArticle

Saunders, DJ, Munns, JHD, Champion, TFM, Qiu, C, Kaczmarek, KT, Poem, E, Ledingham, PM, Walmsley, IA & Nunn, J 2016, 'Cavity-enhanced room-temperature broadband Raman memory', Physical Review Letters, vol. 116, no. 9, 090501, pp. 1-5. https://doi.org/10.1103/PhysRevLett.116.090501
Saunders DJ, Munns JHD, Champion TFM, Qiu C, Kaczmarek KT, Poem E et al. Cavity-enhanced room-temperature broadband Raman memory. Physical Review Letters. 2016 Mar 4;116(9):1-5. 090501. https://doi.org/10.1103/PhysRevLett.116.090501
Saunders, D. J. ; Munns, J. H. D. ; Champion, T. F. M. ; Qiu, C. ; Kaczmarek, K. T. ; Poem, E. ; Ledingham, P. M. ; Walmsley, I. A. ; Nunn, J. / Cavity-enhanced room-temperature broadband Raman memory. In: Physical Review Letters. 2016 ; Vol. 116, No. 9. pp. 1-5.
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