Realizing flexible two-qubit controlled phase gate with a hybrid   solid-state system
  We propose a theoretical scheme for realizing {\deg}exible two-qubit controlled phase gate. A transmission line resonator is used to induce the coupling between nitrogen-vacancy (N-V) in diamond and superconducting qubit. The N-V center acts as control qubit and the superconducting qubit as target qubit. Through adjusting external flux, we obtain desired coupling between random superconducting qubit and transmission line resonator. Moreover, our protocol might be implemented via the current experimental technology. 
Feng-yang Zhang, Ying Shi, Chong Li, and He-shan Song
quant-ph cond-mat.mes-hall