Improved Scheme for Probabilistic Transformation and Teleportation of Multi-Particle Quantum States

Min Jiang, Zengke Zhang, Xiangxu Li +1 more

In most probabilistic teleportation schemes, if the teleportation fails, the unknown quantum state will be completely ruined. In addition, the frequently proposed high-dimensional unitary operations are very difficult to realize experimentally. To maintain the integrity of the unknown quantum state to be teleported, this analysis does not focus attention on the original multi-particle state but seeks to construct a faithful channel with an ancillary particle and a unified high-dimensional unitary operation. The result shows that if the construction of the multi-group Einstein-Podolsky-Rosen pair succeeds, the original multi-particle state can be used to deterministically teleport the unknown quantum state of the entangled multiple particles which avoids undermining the integrity of the unknown state brought about by failure. This unified high-dimensional operation is appealing due to the obvious experimental convenience.

Bao‐Sen Shi, Yun-Kun Jiang, Guang‐Can Guo

Min Cao, Zhu Shi-Qun

The general scheme for teleportation of a multi-particle d -level quantum state is presented when m pairs of partially entangled particles are utilized as quantum channels. The probabilistic teleportation can be achieved with a successful probability of ∏ N = 0 d −1 ( C 0 N ) 2 / d M , which is determined by the smallest coefficients of each entangled channels.

Fengli Yan, Dong Wang

Li Dong, Xiu Xiao-Ming, Ya-Jun Gao

Zhan Ying Guo, Qing Lin He, Ming Zhe Shang

A scheme is presented to probabilistically controlled teleport an arbitrary triplet W state using three pair maximally entangled triplet W state as the quantum channel. During the teleportation procedure, the controller performs Von Neumann measurements on his particles, the sender makes orthogonal basis measurements, instead of using Bell-state measurements, and the receiver can faithfully reconstruct the original state by performing relevant unitary transformations. The total probability of successful teleportation can be improved to 20/27. unitary transformation