Parity-swap state comparison amplifier for Schrödinger cat states

Gioan Tatsi, Luca Mazzarella, John Jeffers

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
8 Downloads (Pure)


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.
Original languageEnglish
Article number023709
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number2
Publication statusPublished - 15 Feb 2021


  • quantum communication
  • quantum optics
  • quantum repeaters


Dive into the research topics of 'Parity-swap state comparison amplifier for Schrödinger cat states'. Together they form a unique fingerprint.

Cite this