2019/05/17 by Evgeny V. Mikheev, Mikheev, Evgeny V., Sergey A. Podoshvedov +3
Computer Science · Mathematics · Physics and Astronomy · #Algorithm #Coherent states #Cold Atom Physics and Bose-Einstein Condensates #Combinatorics #Computer science #Displacement (psychology) #FOS: Physical sciences #Hilbert space #Kitten #Mathematics #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum Physics (quant-ph) #Quantum mechanics #Representation (politics) #State (computer science) #Topology (electrical circuits) #quant-ph
paper · pdf · doi:10.48550/arxiv.1905.07334
published in arXiv (Cornell University) (Cornell University) · 14 pages, 10 figures and 3 Tables
openalex publication_date 2019/05/17 · arxiv created 2019/06/12 · arxiv updated 2019/06/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We demonstrate an optical method to engineer optical Schrödinger cat states (SCSs) of large size beta ranging from beta=2 to beta=3 with high fidelity close to 0.99. Our approach uses the alpha-representation of the SCSs in infinite Hilbert space with base in terms of displaced number states characterized by the displacement amplitude alpha. An arbitrary alpha-representation of SCSs enables manipulation of the amplitudes in wider ranges of parameters, greatly expanding the possibilities for generation of desired nonclassical states. The optical scheme we consider is quite universal for implementation of the conditioned states close to SCSs with use of linear-optics elements and detectors projecting unitarily transformed input states onto the target one. Different states (e.g., number state or coherent state or superposed state) are selected as the input to the optical scheme. In particular, an input small-size Schroodinger kitten state can give rise to an output large-size SCS.