Squeezing and entanglement features in parametrically enhanced cavity electro-opto-mechanical converter

Luo, Jianqiao; Wu, Dewei; Miao, Qiang; Wei, Tianli

doi:10.1016/j.rinp.2020.103176

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…Based on the quantum entanglement characteristics, the transmission delay in free space can be accurately measured [4][5][6] . The electro-opto-mechanical (EOM) converter [7][8] realizes the entanglement between the two cross-band signals of microwave and optical, and combines the long-distance transmission advantage of microwave in free space with the single-photon detection advantage of optical signal, which can achieve long-distance and high-precision time measurement, thereby improving the timing accuracy. At the same time, the detection method of quantum illumination [9] can effectively improve the signal-to-noise ratio and increase the feasible distance of timing function.…”

Section: Introductionmentioning

confidence: 99%

Time traceability of BeiDou system based on microwave-optical entanglement

Liu

Cui

Luhan

et al. 2023

AOPC 2022: Optical Sensing, Imaging, and Display Technology

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Due to the limitation of the measurement accuracy of classical radio signals, the time comparison accuracy can only reach ns level. In this paper, a time comparison scheme of Beidou system based on microwave-optical entangled signal is proposed, which effectively combines the long-distance transmission advantage of microwave signal with the single photon detection advantage of optical signal by electro-opto-mechanical converter, and the phase difference is solved by a phase conjugate processor ,so as to calculate the accurate time difference information. Through theoretical analysis and simulation, it is proved that even if the quantum signal is under the condition of low entanglement degree, the proposed scheme can improve the time comparison accuracy to the ps level.

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