Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Heterodyne detection enhanced by quantum correlation

Not Accessible

Your library or personal account may give you access

Abstract

Heterodyne detectors as phase-insensitive (PI) devices have found important applications in precision measurements such as space-based gravitational-wave (GW) observation. However, the output signal of a PI heterodyne detector is supposed to suffer from signal-to-noise ratio (SNR) degradation due to image band vacuum and imperfect quantum efficiency. Here, we show that the SNR degradation can be overcome when the image band vacuum is quantum correlated with the input signal. We calculate the noise figure of the detector and prove the feasibility of heterodyne detection with enhanced noise performance through quantum correlation. This work should be of great interest to ongoing space-borne GW signal searching experiments.

© 2021 Chinese Laser Press

PDF Article
More Like This
Quantum theory of cross correlation heterodyne detection

Sheng Feng and Kaikai Wu
J. Opt. Soc. Am. B 39(11) 3023-3028 (2022)

Quantum theory of phase-sensitive heterodyne detection

Sheng Feng, Dechao He, and Boya Xie
J. Opt. Soc. Am. B 33(7) 1365-1372 (2016)

Squeezing-enhanced heterodyne detection of 10  Hz atto-Watt optical signals

Boya Xie and Sheng Feng
Opt. Lett. 43(24) 6073-6076 (2018)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved