Single-photon router: Coherent control of multichannel scattering for single photons with quantum interferences

By Jing Lu, Lan Zhou, L. Kuang, Franco Nori. 2013

140 citations recorded by the source corpus.

We propose a single-photon router using a single atom with an inversion center coupled to quantum multichannels made of coupled-resonator waveguides. We show that the spontaneous emission of the atom can direct single photons from one quantum channel into another. The on-demand classical field perfectly switches off the single-photon routing due to the quantum interference in the atomic amplitudes of optical transitions. Total reflections in the incident channel are due to the photonic bound state in the continuum. Two virtual channels, named the scatter-free and controllable channels, are found, which are coherent superpositions ofquantumchannels.Anyincidentphotoninthescatter-freechannelistotallytransmitted.Thepropagatingstates of the controllable channel are orthogonal to those of the scatter-free channel. Single photons in the controllable channel can be perfectly reflected or transmitted by the atom.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/de44f702f33184df352ab386efa28b23503dfcf7

How researchers see this paper

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In Artificial Intelligence

  1. Franco Nori
  2. Adam Miranowicz
  3. Anton Frisk Kockum
  4. Yu-xi Liu
  5. X. Gu
  6. Sahel Ashhab
  7. J. You
  8. I. Georgescu

In Atomic and Molecular Physics, and Optics

  1. Adam Miranowicz
  2. Franco Nori
  3. Yu-xi Liu
  4. Anton Frisk Kockum
  5. X. Gu
  6. Sahel Ashhab
  7. J. You
  8. I. Georgescu

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