Generation of a Cat State in an Optical Sideband


T Serikawa, J Yoshikawa, S Takeda, H Yonezawa, TC Ralph, EH Huntington, A Furusawa

Phys. Rev. Lett. , 121, 143602 (2018)

Generation of a Cat State in an Optical Sideband

We propose a method to subtract a photon from a double sideband mode of continuous-wave light. The central idea is to use phase modulation as a frequency sideband beam splitter in the heralding photon subtraction scheme, where a small portion of the sideband mode is down-converted to 0 Hz to provide a trigger photon. An optical cat state is created by applying the proposed method to a squeezed state at 500 MHz sideband, which is generated by an optical parametric oscillator. The Wigner function of the cat state reconstructed from a direct homodyne measurement of the 500 MHz sideband modes shows the negativity of W(0,0)=0.088±0.001 without any loss corrections.

University: The University of Queensland, UNSW Sydney, Australian National University

Authors Centre Participants: Dr. Hidehiro Yonezawa, Prof. Elanor H. Huntington, T Serikawa, J Yoshikawa, S Takeda, A Furusawa

Source: Physical Review Letters

Publication Type: Refereed Journal article

DOI Link: DOI Link

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