One-step implementation of a multi-target-qubit controlled phase gate with cat-state qubits in circuit QED

  1. You-Ji Fan,
  2. Zhen-Fei Zheng,
  3. Yu Zhang,
  4. Dao-Ming Lu,
  5. and Chui-Ping Yang
We propose a single-step implementation of a muti-target-qubit controlled phase gate with one cat-state qubit ( extit{cqubit}) simultaneously controlling n−1 target extit{cqubits}.