Scientific Reports 5

Implementation of quantum state manipulation in a dissipative cavity

Jie Song, Jing-Yan Di, Yan Xia, Xiu-Dong Sun, Yong-Yuan Jiang.
We discuss a method to perform dissipation-assisted quantum state manipulation in a cavity. We show that atomic spontaneous emission and cavity decay might be exploited to drive many atoms into many-body steady-state entanglement. Our protocol offers a dramatic improvement in fidelity when noise strength increases. Moreover, the dephasing noise is suppressed effectively by showing that high-fidelity target state can be obtained in a dissipative environment.