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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
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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Huang, W.C.-W.; Batelaan, H. Testing Quantum Coherence in Stochastic Electrodynamics with Squeezed Schrödinger Cat States. Atoms 2019, 7, 42.

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