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Updated: Aug 7, 2026
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Generation of a squeezed vacuum resonant on a rubidium D1 line with periodically poled KTiOPO4
Takahito Tanimura1, Daisuke Akamatsu, Yoshihiko Yokoi
1Department of Physics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8550, Japan. kozuma@ap.titech.ac.jp
Abstract:
We report the generation of a continuous-wave squeezed vacuum resonant on the Rb D1 line (795 nm) using periodically poled KTiOPO4 (PPKTP) crystals. With a frequency doubler and an optical parametric oscillator based on PPKTP crystals, we observed a squeezing level of -2.75+/-0.14 dB and an antisqueezing level of +7.00+/-0.13 dB. This system could be utilized for demonstrating storage and retrieval of the squeezed vacuum, which is important for the ultraprecise measurement of atomic spins as well as quantum information processing.
