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- Park, Kibog
- Emergent Materials & Devices Lab.
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Study on the squeezed microwave photon prepared by a Josephson parametric amplifier
- Author(s)
- Choi, Gahyun, Noh, Taewan, Park, Gwanyeol, Choi, Jiman, Park, Kibog, Song, Woon, Lee, Soongul, Chong, Yonuk
- Issued Date
- 2017-08-29
- Citation
- 15th International Conference on Squeezed States and Uncertainty Relations (ICSSUR 2017)
- Abstract
- Squeezed state is essential for detecting a weak signal with a reduced noise level. It can be prepared by using Josephson parametric amplifier (JPA) operating in the degenerate mode. We measured the gain by modulating the phase of local oscillator in homodyne setup and observed the gain level below the vacuum level indicating the formation of the squeezed state. Finally we reconstructed the quadrature tomographic histogram of the resulting squeezed state with Wigner function.
- Publisher
- Asia Pacific Center for Theoretical Physics, Seoul National University
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