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Parity-Swap State Comparison Amplifier for Schrodinger Cat States

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 نشر من قبل Gioan Tatsi
 تاريخ النشر 2021
  مجال البحث فيزياء
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We propose a postselecting parity-swap amplifier for Schrodinger 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.



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