Near-100% two-photon-like coincidence-visibility dip with classical light and the role of complementarity

Simanraj Sadana, Debadrita Ghosh, Kaushik Joarder, A. Naga Lakshmi, Barry C. Sanders, and Urbasi Sinha
Phys. Rev. A 100, 013839 – Published 19 July 2019

Abstract

The Hong-Ou-Mandel effect is considered a signature of the quantumness of light, as the dip in coincidence probability using semiclassical theories has an upper bound of 50%. Here we show, theoretically and experimentally, that, with proper phase control of the signals, classical pulses can mimic a Hong-Ou-Mandel-like dip. We demonstrate a dip of (99.635±0.002)% with classical microwave fields. Quantumness manifests in wave-particle complementarity of the two-photon state. We construct quantum and classical interferometers for the complementarity test and show that while the two-photon state shows wave-particle complementarity the classical pulses do not.

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  • Received 14 January 2019

DOI:https://doi.org/10.1103/PhysRevA.100.013839

©2019 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Simanraj Sadana1, Debadrita Ghosh1, Kaushik Joarder1, A. Naga Lakshmi1, Barry C. Sanders1,2,3, and Urbasi Sinha1,*

  • 1Raman Research Institute, Sadashivanagar, Bangalore 560 080, India
  • 2Institute for Quantum Science and Technology, University of Calgary, Calgary, Alberta, Canada T2N 1N4
  • 3Program in Quantum Information Science, Canadian Institute for Advanced Research, Toronto, Ontario, Canada M5G 1Z8

  • *usinha@rri.res.in

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Vol. 100, Iss. 1 — July 2019

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