Conditional nonclassical field generation in cavity QED

Karsten Weiher, Elizabeth Agudelo, and Martin Bohmann
Phys. Rev. A 100, 043812 – Published 11 October 2019

Abstract

We introduce a method for the conditional generation of nonclassical states of light in a cavity. We consider two-level atoms traveling along the transverse direction to the cavity axis and show that by conditioning on one of the output measurements nonclassical field states are generated. The two-level atoms are prepared in the ground state and we conditioned them on the events in which they are also detected in the ground state. Nonclassical properties of the cavity mode are identified and characterized. This includes quadrature squeezing, sub-Poissonian photon-number distributions, and negative Wigner functions. We determine the optimal parameter regions where the corresponding nonclassical features are most distinct.

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  • Received 23 July 2019

DOI:https://doi.org/10.1103/PhysRevA.100.043812

©2019 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyAtomic, Molecular & Optical

Authors & Affiliations

Karsten Weiher1, Elizabeth Agudelo2,*, and Martin Bohmann3,†

  • 1Institut für Physik, Universität Rostock, D-18051 Rostock, Germany
  • 2Institute for Quantum Optics and Quantum Information (IQOQI) Vienna, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
  • 3Quantum Science and Technology in Arcetri (QSTAR), Istituto Nazionale di Ottica-Consiglio Nazionale delle Ricerche (INO-CNR), and European Laboratory for Nonlinear Spectroscopy (LENS), Largo Enrico Fermi 2, I-50125 Firenze, Italy

  • *elizabeth.agudelo@oeaw.ac.at
  • martin.bohmann@ino.it

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Issue

Vol. 100, Iss. 4 — October 2019

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