Daniel K. L. Oi

Deterministic amplification of Schrödinger cat states in circuit quantum electrodynamics

  1. Jaewoo Joo,
  2. Matthew Elliott,
  3. Daniel K. L. Oi,
  4. Eran Ginossar,
  5. and Timothy P. Spiller
We propose a dynamical scheme for deterministically amplifying photonic Schr$“o$dinger cat states based on a set of optimal state-transfers. The scheme can be implemented in
strongly coupled qubit-cavity systems and is well suited to the capabilities of state of the art superconducting circuits. The ideal analytical scheme is compared with a full simulation of the open Jaynes-Cummings model with realistic device parameters. This amplification tool can be utilized for practical quantum information processing in non-classical continuous-variable states.
arxiv pdf