Skip to main content
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.

State-independent quantum tomography of a single-photon state by photon-number-resolving measurements

Published

Author(s)

Thomas Gerrits, Adriana Lita, Sae Woo Nam, Rajveer Nehra, Aye Win, Miller Eaton, Niranjan Sridhar, R. Shahrokhshahi, O Pfister

Abstract

A narrowband single-photon state was generated by heralding cavity-enhanced spontaneous parametric downconversion in a PPKTP optical parametric oscillator. The Wigner quasiprobability distribution function was reconstructed, in a state-independent manner, by quantum state tomography using photon-number-resolving measurements with a system efficiency of 58±2%. Negativity of the Wigner function was observed in the raw data without any inference or correction for decoherence.
Citation
Optica

Keywords

single photon detectors, squeezing, quantum state tomography

Citation

Gerrits, T. , Lita, A. , Nam, S. , Nehra, R. , Win, A. , Eaton, M. , Sridhar, N. , Shahrokhshahi, R. and Pfister, O. (2019), State-independent quantum tomography of a single-photon state by photon-number-resolving measurements, Optica, [online], https://doi.org/10.1364/OPTICA.6.001356 (Accessed May 26, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created October 10, 2019, Updated April 9, 2024