TY - JOUR
T1 - Pulse Retiming for Improved Switching Rates in Low-Noise Cross-Phase-Modulation-Based Fiber Switches
AU - Lee, Kim F.
AU - Moraw, Paul M.
AU - Reilly, Daniel R.
AU - Kanter, Gregory S.
N1 - Funding Information:
Manuscript received November 2, 2020; accepted December 8, 2020. Date of publication December 11, 2020; date of current version December 21, 2020. This work was supported in part by the Defense Advanced Research Projects Agency (DARPA) and in part the Army Contracting Command-Aberdeen Proving Grounds (ACC-APG) under Contract W911NF-18-C-0053. (Corresponding author: Gregory S. Kanter.) The authors are with NuCrypt LLC, Evanston, Il 60201 USA (e-mail: [email protected]).
Publisher Copyright:
© 1989-2012 IEEE.
PY - 2021/1/1
Y1 - 2021/1/1
N2 - Temporal multiplexing or demultiplexing of quantum signals would benefit from low-loss, high speed, high rate, and low noise switches. Fiber cross-phase-modulation based switches are a promising solution, but their maximum switching rate is usually limited by pump power limitations. We demonstrate the use of mid-stage pump-pulse re-timing to improve the pump-power efficiency and thus increase the maximum switching rates of such devices. The maximum average pump pulse rate of the switch is shown to increase by more than 50% to 800 MHz when employing pump-pulse retiming. We furthermore confirm the suitability of the switch for quantum signals by sending one of a pair of quantum-correlated photons through the switch while incurring no noticeable degradation of correlations.
AB - Temporal multiplexing or demultiplexing of quantum signals would benefit from low-loss, high speed, high rate, and low noise switches. Fiber cross-phase-modulation based switches are a promising solution, but their maximum switching rate is usually limited by pump power limitations. We demonstrate the use of mid-stage pump-pulse re-timing to improve the pump-power efficiency and thus increase the maximum switching rates of such devices. The maximum average pump pulse rate of the switch is shown to increase by more than 50% to 800 MHz when employing pump-pulse retiming. We furthermore confirm the suitability of the switch for quantum signals by sending one of a pair of quantum-correlated photons through the switch while incurring no noticeable degradation of correlations.
KW - Single-photon switch
KW - quantum communications
KW - quantum information processing
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U2 - 10.1109/LPT.2020.3044256
DO - 10.1109/LPT.2020.3044256
M3 - Article
AN - SCOPUS:85097940630
SN - 1041-1135
VL - 33
SP - 51
EP - 54
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
IS - 1
M1 - 9291481
ER -