Parity-Swap State Comparison Amplifier for Schr\"odinger Cat States

Gioan Tatsi; Luca Mazzarella; John Jeffers

doi:10.1103/PhysRevA.103.023709

Parity-Swap State Comparison Amplifier for Schr\"odinger Cat States

Quantum Physics 2021-03-01 v1

Authors: Gioan Tatsi , Luca Mazzarella , John Jeffers

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We propose a postselecting parity-swap amplifier for Schr\"odinger 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.

Keywords

schrödinger cat states parity-swap amplifier state comparison amplifier postselection gaussian resource states geiger-mode photodetectors

Cite

@article{arxiv.2102.13530,
  title  = {Parity-Swap State Comparison Amplifier for Schr\"odinger Cat States},
  author = {Gioan Tatsi and Luca Mazzarella and John Jeffers},
  journal= {arXiv preprint arXiv:2102.13530},
  year   = {2021}
}

Related papers

View all related →