Stevens, M.
, Baek, B.
, Dauler, E.
, Kerman, A.
, Molnar, R.
, Hamilton, S.
, Berggren, K.
, Mirin, R.
and Nam, S.
(2009),
Measuring high-order coherences of chaotic and coherent optical states, CQIQC III: Conference on Quantum Information and Quantum Control, Toronto, -1, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=903081
(Accessed April 18, 2024)
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Measuring high-order coherences of chaotic and coherent optical states
Published
Author(s)
, , Eric Dauler, Andrew J. Kerman, Richard J. Molnar, Scott A. Hamilton, Karl Berggren, ,
Abstract
We demonstrate a new approach to measuring high-order temporal coherences that uses a four-element superconducting nanowire single-photon detector (SNSPD) in which four independent, single-photon-sensitive elements are interleaved over a single spatial mode of the optical beam. We show the power of this technique by measuring nth-order coherences (n = 2,3,4) both of a chaotic, pseudo-thermal source that exhibits high-order photon bunching (up to n!), and of a coherent state source for which all coherences are ~1. Our results demonstrate that using multiple detector elements to parse an optical beam over dimensions smaller than the minimum diffraction-limited spot size can be equivalent--and in some cases superior--to using multiple beamsplitters and discrete detectors that each sample a replica of the entire mode.Proceedings Title
CQIQC III: Conference on Quantum Information and Quantum Control
Conference Dates
August 24-27, 2009
Conference Location
Toronto
Pub Type
Conferences
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Citation
Created August 24, 2009, Updated February 19, 2017