Precise amplitude and phase matching by integrating spatial light modulation and digital holography for pulsed squeezing

Yuki Sano; Kenichi Oguchi; Zicong Xu; Yoshitaka Taguchi; Kazuhiro Katoh; Yasuyuki Ozeki

doi:10.1117/12.2606157

2 March 2022 Precise amplitude and phase matching by integrating spatial light modulation and digital holography for pulsed squeezing

Yuki Sano, Kenichi Oguchi, Zicong Xu, Yoshitaka Taguchi, Kazuhiro Katoh, Yasuyuki Ozeki

Author Affiliations +

Proceedings Volume 12016, Optical and Quantum Sensing and Precision Metrology II; 1201607 (2022) https://doi.org/10.1117/12.2606157
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

Quantum-enhanced measurements using squeezed light provide sensitivities beyond the shot-noise limit and have attracted much attention in many fields such as spectroscopy, gravitational wave detection, and biological imaging. To achieve high squeezing levels, the precise matching of the amplitude and phase between squeezed vacuum and local oscillator (LO) is essential. Still, it is not a simple task, especially when optical pulses are used. For continuous-wave beams, a mode-cleaning cavity or a single-mode waveguide is commonly used to control the spatial profile of the two beams. However, the cavity must be large enough to couple the optical pulses, and the waveguide causes unwanted nonlinearities for intense optical pulses and has a limited variety of materials. This study implemented precise amplitude and phase matching by integrating phase-shift digital holography and spatial light modulator (SLM). Specifically, we used a periodically-poled stoichiometric lithium tantalate (PPSLT) waveguide for optical parametric amplification (OPA). We measured the spatially resolved phase difference and intensity profile of idler light and LO by analyzing their interference movie with phase- shifting digital holography. We performed spatial mode matching by controlling the amplitude and phase of LO using SLM. As a result, we achieved high visibility of 92.9% and observed a squeezing level of -3.61 dB.

Conference Presentation

Citation Download Citation

Yuki Sano, Kenichi Oguchi, Zicong Xu, Yoshitaka Taguchi, Kazuhiro Katoh, and Yasuyuki Ozeki "Precise amplitude and phase matching by integrating spatial light modulation and digital holography for pulsed squeezing", Proc. SPIE 12016, Optical and Quantum Sensing and Precision Metrology II, 1201607 (2 March 2022); https://doi.org/10.1117/12.2606157

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