A Feasible Scheme for Teleportation of Multi-atom Cat-like States in Thermal Cavities

Wen Zhang, Yimin Liu, Zhang-Yin Wang +1 more

Wang, Xinwen, Liu +3 more

Xin-Wen Wang, Liu Xiang

An experimentally feasible scheme for implementing teleportation of multi-atom cat-like states in cavity QED is proposed. In the scheme the atoms interact simultaneously with a highly detuned cavity mode and are driven by a strong classical field, and the atomic state evolution is independent of cavity field state. Thus the scheme is insensitive to both the cavity decay and the thermal field, which is of importance from the experimental point of view. All the orthogonal and complete multi-atom GHZ states can be exactly distinguished only by one step, so our scheme can also be used for other purposes such as dense coding using multi-atom GHZ states as quantum channels.

Xue, Zheng-Yuan, Yi Yi +3 more

Xiong Wen-yuan

An experimentally feasible scheme for implementing teleportation of multi-atom cat-like states via partially entangled states is proposed.In the scheme,the probability of teleporting multi-atom cat-like is two times of square of the smaller coefficient of the superposition state serving as quantum channel,i.e.,the biggest probability of implementing teleportation with such class of entangled states.Moreover,our scheme is insensitive to cavity decay,because atoms are interacting with a large detuning vacuum cavity field.

Tan Xiao-Hui, Fang Xi-Ming, Guoyou Wang

We present a scheme for teleportation of an arbitrary N -atom state without Bell state measurement in thermal cavity QED, and show the feasibility in experiment. Our scheme is also insensitive to both cavity decay and thermal field, and the fidelity of teleportation is only slightly affected by the experimental errors. In addition, the success probability reaches 1.0.