Real-time phase-reference monitoring in a quasi-optimal coherent-state receiver

Alessia Allevi; Matteo Bina; Maria Bondani; Stefano Olivares

doi:10.1117/12.2178937

7 May 2015 Real-time phase-reference monitoring in a quasi-optimal coherent-state receiver

Alessia Allevi, Matteo Bina, Maria Bondani, Stefano Olivares

Proceedings Volume 9505, Quantum Optics and Quantum Information Transfer and Processing 2015; 95050J (2015) https://doi.org/10.1117/12.2178937
Event: SPIE Optics + Optoelectronics, 2015, Prague, Czech Republic

Abstract

The Kennedy-like receiver is a quasi-optimal discrimination scheme employed in binary phase-shift-keyed communication schemes with coherent states. In its standard configuration, it is based on the interference of the two signals encoding the message with a reference local oscillator and on the measurement by means of ON/OFF detectors. Here we demonstrate that, without interrupting the communication, it is possible to monitor the relative phase between the signals and the local oscillator by applying a Bayesian processing to the very data sample used to discriminate the signals at any shot. We show, both numerically and experimentally, that the minimum uncertainty in phase estimation can be achieved both with ON/OFF and photon-number resolving detectors. The performances of our phase-estimation method in the presence of either uniform phase noise or phase diffusion are also investigated and discussed.

Citation Download Citation

Alessia Allevi, Matteo Bina, Maria Bondani, and Stefano Olivares "Real-time phase-reference monitoring in a quasi-optimal coherent-state receiver", Proc. SPIE 9505, Quantum Optics and Quantum Information Transfer and Processing 2015, 95050J (7 May 2015); https://doi.org/10.1117/12.2178937

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