Coherence in cooperative photon emission from indistinguishable quantum emitters

Zhe Xian Koong, Moritz Cygorek, Eleanor Scerri, Ted S. Santana, Suk In Park, Jin Dong Song, Erik M. Gauger, Brian D. Gerardot

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Abstract

Photon-mediated interactions between atoms can arise via coupling to a common electromagnetic mode or by quantum interference. Here, we probe the role of coherence in cooperative emission arising from two distant but indistinguishable solid-state emitters because of path erasure. The primary signature of cooperative emission, the emergence of "bunching"at zero delay in an intensity correlation experiment, is used to characterize the indistinguishability of the emitters, their dephasing, and the degree of correlation in the joint system that can be coherently controlled. In a stark departure from a pair of uncorrelated emitters, in Hong-Ou-Mandel-type interference measurements, we observe photon statistics from a pair of indistinguishable emitters resembling that of a weak coherent state from an attenuated laser. Our experiments establish techniques to control and characterize cooperative behavior between matter qubits using the full quantum optics toolbox, a key step toward realizing large-scale quantum photonic networks.

Original languageEnglish
Article numberabm8171
JournalScience Advances
Volume8
Issue number11
DOIs
Publication statusPublished - 18 Mar 2022

Keywords

  • quant-ph
  • cond-mat.mes-hall

ASJC Scopus subject areas

  • General

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