Abstract

Squeezed states belong to the most prominent non-classical resources. They have compelling applications in precise measurement, quantum computation, and detection. Here, we report on the direct measurement of 13.8 dB squeezed vacuum states by improving the interference efficiency and gain of balanced homodyne detection. By employing an auxiliary laser beam, the homodyne visibility is increased to 99.8%. The equivalent loss of the electronic noise is reduced to 0.05% by integrating a junction field-effect transistor (JFET) buffering input and another JFET bootstrap structure in the balanced homodyne detector.

© 2019 Chinese Laser Press

Detection and perfect fitting of 13.2  dB squeezed vacuum states by considering green-light-induced infrared absorption

Shaoping Shi, Yajun Wang, Wenhai Yang, Yaohui Zheng, and Kunchi Peng
Opt. Lett. 43(21) 5411-5414 (2018)

13  dB squeezed vacuum states at 1550  nm from 12  mW external pump power at 775  nm

Axel Schönbeck, Fabian Thies, and Roman Schnabel
Opt. Lett. 43(1) 110-113 (2018)

Stable control of 10 dB two-mode squeezed vacuum states of light

Tobias Eberle, Vitus Händchen, and Roman Schnabel
Opt. Express 21(9) 11546-11553 (2013)

Balanced homodyne detection with high common mode rejection ratio based on parameter compensation of two arbitrary photodiodes

Xiaoli Jin, Jing Su, Yaohui Zheng, Chaoyong Chen, Wenzhe Wang, and Kunchi Peng
Opt. Express 23(18) 23859-23866 (2015)

Cavity enhanced parametric homodyne detection of a squeezed quantum comb

Yuhang Tian, Xiaocong Sun, Yajun Wang, Qinghui Li, Long Tian, and Yaohui Zheng
Opt. Lett. 47(3) 533-536 (2022)