Preparing Bell State by Using Dissipative Process in Directly Coupled Cavities

Chong Yang, Dongxiao Li, Xiao‐Qiang Shao

Shang-Bin Li, Jing-Bo Xu

We study the quantum entanglement between two coupled cavities, in which one is initially prepared in a mesoscopic superposition state and the other is in the vacuum in dissipative environment and show how the entanglement between two cavities can arise in the dissipative environment. The dynamic behavior of the nonlocality for the system is also investigated.

Xing Li, Ying-Jie Zhang, Yun‐Jie Xia

Li, S B, Xu, J B

We study the quantum entanglement between two coupled cavities, in which one is initially prepared in a mesoscopic superposition state and the other is in the vacuum in dissipative environment and show how the entanglement between two cavities can arise in the dissipative environment. The dynamic behavior of the nonlocality for the system is also investigated.

Jun Jing, Zhiguo Lü, Guo-Hong Yang

Ryan Sweke, Ilya Sinayskiy, Francesco Petruccione

A scheme is presented for the dissipative preparation of generalized Bell states of two qubits, within the context of cavity QED. In the suggested protocol the dissipative processes of spontaneous emission and cavity loss are no longer undesirable, but essential to the required dynamics. Extremely long-lived target states are achieved, with fidelities of near unity, utilizing cooperativities corresponding to currently available optical cavities. Furthermore, the suggested protocol exhibits excellent scaling of relevant characteristics, with respect to cooperativity, such that improved results may be obtained as the development of experimental capabilities continues.