Physical Review A
Implementing a conditional N -qubit phase gate in a largely detuned optical cavity
Yun‐Feng Xiao, Xu‐Bo Zou, Guang‐Can Guo
Abstract
We propose a scheme to implement an $N$-qubit conditional phase gate with $N$ neutral atoms which are trapped in a large detuning optical cavity. In our scheme, since the cavity field is only required to be virtually excited, the phase gate operation is insensitive to the cavity decay and the gate can be implemented with a high fidelity.