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Biomedical subjects

Daisuke Akamatsu

Publications and source records attributed to Daisuke Akamatsu.

2 recordsLinked to original sources
PubMed2006

Generation of a squeezed vacuum resonant on a rubidium D1 line with periodically poled KTiOPO4.

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.

Journal Article↗
PubMed2004

Electromagnetically induced transparency with squeezed vacuum.

The squeezed vacuum resonant on the (87)Rb D1 line (probe light) was injected into an optically dense rubidium gas cell with a coherent light (control light). The output probe light maintained its quadrature squeezing within the transparency window caused by the electromagnetically induced transparency (EIT). The results reported here are the first realization of EIT in the full quantum regime.

Journal Article↗