Generating a Schrödinger-cat-like state via a coherent superposition of photonic operations

Chang Woo Lee, Jinhyoung Lee, Hyunchul Nha, Hyunseok Jeong

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

We propose an optical scheme to generate a superposition of coherent states with enhanced size adopting an interferometric setting at the single-photon level currently available in the laboratory. Our scheme employs a nondegenerate optical parametric amplifier together with two beam splitters so that the detection of single photons at the output conditionally implements the desired superposition of second-order photonic operations. We analyze our proposed scheme by considering realistic on-off photodetectors with nonideal efficiency in heralding the success of conditional events. A high-quality performance of our scheme is demonstrated in view of various criteria such as quantum fidelity, mean output energy, and measure of quantum interference.

Original languageEnglish
Article number063815
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume85
Issue number6
DOIs
Publication statusPublished - 13 Jun 2012

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cats
photonics
output
photons
beam splitters
parametric amplifiers
light amplifiers
photometers
interference
energy

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Generating a Schrödinger-cat-like state via a coherent superposition of photonic operations. / Lee, Chang Woo; Lee, Jinhyoung; Nha, Hyunchul; Jeong, Hyunseok.

In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 85, No. 6, 063815, 13.06.2012.

Research output: Contribution to journalArticle

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