Entangled-photon interferometry for plasmas

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https://pubs.aip.org/aip/pop/article/28/6/060703/972896

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https://doi.org/10.1063/5.0054194
 http://hdl.handle.net/11603/21514

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UMBC Physics Department
UMBC Faculty Collection

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2021-06-23

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journal articles
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Citation of Original Publication

Zhehui Wang, Yanhua Shih; Entangled-photon interferometry for plasmas. Phys. Plasmas 1 June 2021; 28 (6): 060703. https://doi.org/10.1063/5.0054194

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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law
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Abstract

Sub-picosecond coincidence timing from nonlocal intensity interference of entangled photons allows quantum interferometry for plasmas. Using a warm plasma dispersion relation, we correlate phase measurement sensitivity with different plasma properties or physics mechanisms over 6 orders of magnitude. Due to Nα (α≤−1/2) scaling with the photon number N, quantum interferometry using entangled light can probe small signals in plasmas not previously accessible. As an example, it is predicted that plasmas will induce shifts to a Gaussian dip, a well-known quantum optics phenomenon that is yet to be demonstrated for plasmas.