2019/09/03 by Jens Arnbak, J. Arnbak, C. S. Jacobsen +11 · 29 citations
Computer Science · Engineering · Physics and Astronomy · #Advanced Fiber Optic Sensors #Breadboard #Light source #Mechanical and Optical Resonators #Optical fiber #Parametric statistics #Phase conjugation #Quantum #Quantum Information and Cryptography #Quantum imaging #Quantum optics #Spontaneous parametric down-conversion #Squeezed coherent state #physics.optics #quant-ph
paper · pdf · open access · doi:10.1364/oe.27.037877
published in Optics Express 27(26), 37877 (Optica Publishing Group)
arxiv created 2019/09/03 · openalex publication_date 2019/12/13 · openalex created_date 2019/12/26 · arxiv updated 2020/01/08 · openalex updated_date 2026/08/05
Strongly squeezed light finds many important applications within the fields of quantum metrology, quantum communication and quantum computation. However, due to the bulkiness and complexity of most squeezed light sources of today, they are still not a standard tool in quantum optics labs. We have taken the first steps in realizing a compact, high-performance 1550 nm squeezing source based on commercially available fiber components combined with a free-space double-resonant parametric down-conversion source. The whole setup, including single-pass second-harmonic generation in a waveguide, fits on a 30 cm×45 cm breadboard and produces 9.3 dB of squeezing at a 5 MHz sideband-frequency. The setup is currently limited by phase noise, but further optimization and development should allow for a 19" sized turn-key squeezing source capable of delivering more than 10 dB of squeezing.