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Generation of a squeezed vacuum resonant on Rubidium D_1 line with periodically-poled KTiOPO_4

Takahito Tanimura·Daisuke Akamatsu·Yoshihiko Yokoi·Akira Furusawa·Mikio Kozuma
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Abstract

We report generation of a continuous-wave squeezed vacuum resonant on the Rb D_1 line (795 nm) using periodically poled KTiOPO_4 (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 anti-squeezing 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 ultra-precise measurement of atomic spins as well as quantum information processing.

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Takahito Tanimura, Daisuke Akamatsu, Yoshihiko Yokoi, Akira Furusawa, Mikio Kozuma. 2006-03-23. Generation of a squeezed vacuum resonant on Rubidium D_1 line with periodically-poled KTiOPO_4. https://doi.org/10.1364/ol.31.002344

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