Generating single-photon catalyzed coherent states with quantum-optical catalysis

• Published in: Physics letters. A Vol. 380; no. 31-32; pp. 2342 - 2348
• Main Authors: Xu, Xue-xiang, Yuan, Hong-chun
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.07.2016
• Subjects: Beam splitter; Beam splitters; Catalysis; Channels; Coherence; Compressing; Conditional measurement; Non-Gaussian state; Parametric amplifier; Photons; Ports; Quantum-optical catalysis; Solid state physics; Wigner function; Parametric amplifier; Quantum-optical catalysis; Wigner function; Beam splitter; Conditional measurement; Non-Gaussian state
• DOI: 10.1016/j.physleta.2016.05.025
• ISSN: 0375-9601

We theoretically generate single-photon catalyzed coherent states (SPCCSs) by means of quantum-optical catalysis based on the beam splitter (BS) or the parametric amplifier (PA). These states are obtained in one of the BS (or PA) output channels if a coherent state and a single-photon Fock state are present in two input ports and a single photon is registered in the other output port. The success probabilities of the detection (also the normalization factors) are discussed, which is different for BS and PA catalysis. In addition, we prove that the generated states catalyzed by BS and PA devices are actually the same quantum states after analyzing photon number distribution of the SPCCSs. The quantum properties of the SPCCSs, such as sub-Poissonian distribution, anti-bunching effect, quadrature squeezing effect, and the negativity of the Wigner function are investigated in detail. The results show that the SPCCSs are non-Gaussian states with an abundance of nonclassicality. •We generate single-photon catalyzed coherent states with quantum-optical catalysis.•We prove the equivalent effects of the lossless beam splitter and the non-degenerate parametric amplifier.•Some nonclassical properties of the generated states are investigated in detail.