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Testing Quantum Coherence in Stochastic Electrodynamics with Squeezed Schrödinger Cat States

1
Center for Fundamental Physics, Northwestern University, Evanston, IL 60208, USA
2
Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
*
Author to whom correspondence should be addressed.
Atoms 2019, 7(2), 42; https://doi.org/10.3390/atoms7020042
Received: 15 February 2019 / Revised: 20 March 2019 / Accepted: 2 April 2019 / Published: 5 April 2019
(This article belongs to the Special Issue Stochastic Electrodynamics)
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Abstract

The interference pattern in electron double-slit diffraction is a hallmark of quantum mechanics. A long-standing question for stochastic electrodynamics (SED) is whether or not it is capable of reproducing such effects, as interference is a manifestation of quantum coherence. In this study, we used excited harmonic oscillators to directly test this quantum feature in SED. We used two counter-propagating dichromatic laser pulses to promote a ground-state harmonic oscillator to a squeezed Schrödinger cat state. Upon recombination of the two well-separated wavepackets, an interference pattern emerges in the quantum probability distribution but is absent in the SED probability distribution. We thus give a counterexample that rejects SED as a valid alternative to quantum mechanics. View Full-Text
Keywords: interference pattern; stochastic electrodynamics; quantum coherence; squeezed Schrödinger cat state; Kapitza-Dirac effect; parametric excitation interference pattern; stochastic electrodynamics; quantum coherence; squeezed Schrödinger cat state; Kapitza-Dirac effect; parametric excitation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Huang, W. .-W.; Batelaan, H. Testing Quantum Coherence in Stochastic Electrodynamics with Squeezed Schrödinger Cat States. Atoms 2019, 7, 42.

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