Generation of phase-squeezed optical pulses with large coherent amplitudes by post-selection of single photon and weak cross-Kerr non-linearity

2014/10/31 by Fumiaki Matsuoka, Akihisa Tomita, Yutaka Shikano
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Amplitude #Beam splitter #Coherent states #Interferometry #Laser #Laser-Matter Interactions and Applications #Optical Network Technologies #Optics #Phase (matter) #Photon #Physics #Quantum #Quantum mechanics #Squeezed coherent state #Superposition principle #physics.optics #quant-ph

paper · pdf · doi:10.1007/s40509-016-0091-9

published as Quantum Stud.: Math. Found. 4, 159 - 169 (2017) · 13 pages, 6 figures

openalex publication_date 2016/10/27 · arxiv created 2017/05/27 · arxiv updated 2017/05/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Phase-squeezed light can enhance the precision of optical phase estimation. The larger the photon numbers are and the stronger the squeezing is, the better the precision will be. We propose an experimental scheme for generating phase-squeezed light pulses with large coherent amplitudes. In our scheme, one arm of a single-photon Mach-Zehnder interferometer interacts with coherent light via a non-linear optical Kerr medium to generate a coherent superposition state. Post-selecting the single photon by properly tuning a variable beam splitter in the interferometer yields a phase-squeezed output.

Citations

• Quantum enhancement ofN-photon phase sensitivity by interferometric addition of down-converted photon pairs to weak coherent light
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• Introductory Quantum Optics