NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

Phase stabilization with single photon detection for quantum networks

Published

Author(s)

Jabir Marakkarakath Vadakkepurayil, Daehyun Ahn, FNU Nur Fajar Rizqi Annafianto, Ivan Burenkov, Abdella Battou, Sergey Polyakov

Abstract

Maintaining stable phases in interferometric systems and optical links is pivotal for the functionality of diverse quantum communication protocols. However, conventional phase stabilization methods use classical optical signals that may corrupt quantum signals propagating in the same optical fiber link because of the crosstalk. Here we demonstrate experimentally successful phase stabilization of over a 120 km deployed optical communication link connecting distant metropolitan-scale locations, achieved through the use of faint coherent optical pulses and single-photon detection. To avoid the crosstalk we use faint light optical phase reference signal producing less than 1 million photon detections per second at a single-photon detector. We investigate phase noise characteristics and performance of the phase stabilization method using optical fiber spools of different lengths and demonstrate interferometric visibility of over 90 % with single-photon detection for up to 50 km fiber spools. By implementing a stabilization strategy with a 50 % duty cycle time division multiplexing, we enable quantum payloads to coexist within the same communication channel without background noise.
Proceedings Title
2024 Conference on Lasers and Electro-Optics (CLEO)
Conference Dates
May 5-10, 2024
Conference Location
Charlotte, NC, US
Conference Title
Conference on Lasers & Electro-Optics (CLEO)
Pub Type
Conferences

Download Paper

https://doi.org/10.1364/CLEO_FS.2024.FTu3F.6
Local Download

Keywords

Quantum network, Coherent communication, Quantum communication, Single photon
Quantum communications, Physics, Optical physics and communications and Advanced communications

Citation

Marakkarakath Vadakkepurayil, J. , Ahn, D. , Nur Fajar Rizqi Annafianto, F. , Burenkov, I. , Battou, A. and Polyakov, S. (2024), Phase stabilization with single photon detection for quantum networks, 2024 Conference on Lasers and Electro-Optics (CLEO), Charlotte, NC, US, [online], https://doi.org/10.1364/CLEO_FS.2024.FTu3F.6, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=958305 (Accessed October 27, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created October 29, 2024, Updated February 13, 2025
Was this page helpful?