Conditional nonclassical field generation in cavity QED

Year: 2019

Authors: Weiher K., Agudelo E., Bohmann M.

Autors Affiliation: Univ Rostock, Inst Phys, D-18051 Rostock, Germany; Austrian Acad Sci, Inst Quantum Opt & Quantum Informat IQOQI Vienna, Boltzmanngasse 3, A-1090 Vienna, Austria; INO CNR, Quantum Sci & Technol Arcetri QSTAR, Largo Enrico Fermi 2, I-50125 Florence, Italy; European Lab Nonlinear Spect LENS, Largo Enrico Fermi 2, I-50125 Florence, Italy.

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.

Journal/Review: PHYSICAL REVIEW A

Volume: 100 (4)      Pages from: 043812-1  to: 043812-8

More Information: KW thanks the European Commission of support through the Erasmus+ Traineeship Program. EA acknowledges funding from the European Union?s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie IF (InDiQE-EU Project No. 845486). MB acknowledges financial support by the Leopoldina Fellowship Program of the German National Academy of Science.
KeyWords: POISSONIAN PHOTON STATISTICS; NUMBER STATES; QUANTUM
DOI: 10.1103/PhysRevA.100.043812

Citations: 12
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