J. Phys. Soc. Jpn. 85, 124401 (2016) [7 Pages]

Detector Imperfections of Schrödinger Cat Generation with Ancillary Coherent States

+ Affiliations
1Department of Applied Physics, Waseda University, Shinjuku, Tokyo 169-8555, Japan2Institute of Quantum Science, Nihon University, Chiyoda, Tokyo 101-8308, Japan

Measurement-induced nonlinear operation in linear optics is a promising technique to realize quantum computation and communications. Such an operation has been demonstrated via the generation of photon-subtracted squeezed states, namely, Schrödinger-cat states. Nielsen and Mølmer have proposed an efficient scheme to generate the cat states with larger amplitudes relative to previous experimental results. We present a simple experimental implementation of their scheme and analyze it while considering experimental imperfections. Our study indicates that the current photon detection technology meets the conditions necessary for their operation.

©2016 The Physical Society of Japan


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