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arXiv · 2104.05386

Entangled-photon interferometry for plasmas

Zhehui Wang·Yanhua Shih
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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 $N^\alpha$ ($\alpha \leq -1/2$) 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.

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Zhehui Wang, Yanhua Shih. 2021-04-12. Entangled-photon interferometry for plasmas. https://doi.org/10.1063/5.0054194

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