Quantum squeezing and sensing with anti-parity-time symmetric quantum optics

Shengwang Du; Chuanwei Zhang

doi:10.1117/12.2657379

9 March 2023 Quantum squeezing and sensing with anti-parity-time symmetric quantum optics

Shengwang Du, Chuanwei Zhang

Proceedings Volume PC12447, Quantum Sensing, Imaging, and Precision Metrology; PC124471E (2023) https://doi.org/10.1117/12.2657379
Event: SPIE Quantum West, 2023, San Francisco, California, United States

Abstract

Non-Hermitian optics with parity-time (PT) or anti-parity-time (APT) symmetry with controlled gain and loss has resulted in many interesting phenomena that do not necessarily have corresponding counterparts in conservative systems. If such a system enters quantum region, the gain-loss induced unavoidable Langevin noises does not preserve the symmetry. Here, we demonstrate APT symmetric nonlinear optical four-wave mixing (FWM) without involving gain and loss, and thus no Langevin noises are induced. We show that The APT phase transition across the exceptional point is connected to the generation of two-mode light squeezing: In the APT symmetry broken regime the squeezing factor oscillates and is bounded, while in the APT symmetry region the squeezing factor increase exponentially along propagation direction. We will discuss how to implement this dramatic change of quantum squeezing for precision quantum sensing.

Conference Presentation

Citation Download Citation

Shengwang Du and Chuanwei Zhang "Quantum squeezing and sensing with anti-parity-time symmetric quantum optics", Proc. SPIE PC12447, Quantum Sensing, Imaging, and Precision Metrology, PC124471E (9 March 2023); https://doi.org/10.1117/12.2657379

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available