Generation of 10-GHz clock sequential time-bin entanglement
Qiang Zhang, Carsten Langrock, Hiroki Takesue, Xiuping Xie, Martin, Fejer, Yoshihisa Yamamoto
TL;DR
This paper demonstrates the generation of high-rate 10-GHz time-bin entangled photon pairs in lithium niobate waveguides, achieving high interference visibility suitable for advanced quantum communication applications.
Contribution
It introduces a novel method for telecom-band 10-GHz time-bin entangled photon-pair generation using lithium niobate waveguides and mode demultiplexing, with high interference visibility.
Findings
Achieved 10-GHz repetition rate for entangled photon pairs.
Observed 85.32% two-photon interference fringe visibility.
Demonstrated potential for quantum information applications.
Abstract
This letter reports telecom-band sequential time-bin entangled photon-pair generation at a repetition rate of 10 GHz in periodically-poled reverse-proton-exchange lithium niobate waveguides based on mode demultiplexing. With up-conversion single-photon detectors, we observed a two-photon-interference-fringe visibility of 85.32% without subtraction of accidental noise contributions, which can find broad application in quantum information and quantum entanglement research.
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