Parity-swap state comparison amplifier for Schrödinger cat states

Tatsi, Gioan and Mazzarella, Luca and Jeffers, John (2021) Parity-swap state comparison amplifier for Schrödinger cat states. Physical Review A - Atomic, Molecular, and Optical Physics, 103 (2). 023709. ISSN 1050-2947 (https://doi.org/10.1103/PhysRevA.103.023709)

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Abstract

We propose a postselecting parity-swap amplifier for Schrödinger cat states that does not require the amplified state to be known a priori. The device is based on a previously implemented state comparison amplifier for coherent states. It consumes only Gaussian resource states, which provides an advantage over some cat state amplifiers. It requires simple Geiger-mode photodetectors and works with high fidelity and approximately twofold gain.

  • Item type:Article
    ID code:75695
    Dates:
    Date
    Event
    15 February 2021
    Published
    1 February 2021
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:09 Mar 2021 09:36
    Last modified:09 Apr 2024 02:13
    URI:https://strathprints.strath.ac.uk/id/eprint/75695
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