High-speed noise-free optical quantum memory

K. T. Kaczmarek, P. M. Ledingham, B. Brecht, S. E. Thomas, G. S. Thekkadath, O. Lazo-Arjona, J. H.D. Munns, E. Poem, A. Feizpour, D. J. Saunders, J. Nunn, I. A. Walmsley

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Optical quantum memories are devices that store and recall quantum light and are vital to the realization of future photonic quantum networks. To date, much effort has been put into improving storage times and efficiencies of such devices to enable long-distance communications. However, less attention has been devoted to building quantum memories which add zero noise to the output. Even small additional noise can render the memory classical by destroying the fragile quantum signatures of the stored light. Therefore, noise performance is a critical parameter for all quantum memories. Here we introduce an intrinsically noise-free quantum memory protocol based on two-photon off-resonant cascaded absorption (ORCA). We demonstrate successful storage of GHz-bandwidth heralded single photons in a warm atomic vapor with no added noise, confirmed by the unaltered photon-number statistics upon recall. Our ORCA memory meets the stringent noise requirements for quantum memories while combining high-speed and room-temperature operation with technical simplicity, and therefore is immediately applicable to low-latency quantum networks.

Original languageEnglish
Article number042316
JournalPhysical Review A
Volume97
Issue number4
DOIs
Publication statusPublished - 10 Apr 2018

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high speed
photons
communication
signatures
statistics
photonics
vapors
bandwidth
requirements
output
room temperature

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Kaczmarek, K. T., Ledingham, P. M., Brecht, B., Thomas, S. E., Thekkadath, G. S., Lazo-Arjona, O., ... Walmsley, I. A. (2018). High-speed noise-free optical quantum memory. Physical Review A, 97(4), [042316]. https://doi.org/10.1103/PhysRevA.97.042316

High-speed noise-free optical quantum memory. / Kaczmarek, K. T.; Ledingham, P. M.; Brecht, B.; Thomas, S. E.; Thekkadath, G. S.; Lazo-Arjona, O.; Munns, J. H.D.; Poem, E.; Feizpour, A.; Saunders, D. J.; Nunn, J.; Walmsley, I. A.

In: Physical Review A, Vol. 97, No. 4, 042316, 10.04.2018.

Research output: Contribution to journalArticle

Kaczmarek, KT, Ledingham, PM, Brecht, B, Thomas, SE, Thekkadath, GS, Lazo-Arjona, O, Munns, JHD, Poem, E, Feizpour, A, Saunders, DJ, Nunn, J & Walmsley, IA 2018, 'High-speed noise-free optical quantum memory', Physical Review A, vol. 97, no. 4, 042316. https://doi.org/10.1103/PhysRevA.97.042316
Kaczmarek KT, Ledingham PM, Brecht B, Thomas SE, Thekkadath GS, Lazo-Arjona O et al. High-speed noise-free optical quantum memory. Physical Review A. 2018 Apr 10;97(4). 042316. https://doi.org/10.1103/PhysRevA.97.042316
Kaczmarek, K. T. ; Ledingham, P. M. ; Brecht, B. ; Thomas, S. E. ; Thekkadath, G. S. ; Lazo-Arjona, O. ; Munns, J. H.D. ; Poem, E. ; Feizpour, A. ; Saunders, D. J. ; Nunn, J. ; Walmsley, I. A. / High-speed noise-free optical quantum memory. In: Physical Review A. 2018 ; Vol. 97, No. 4.
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