关键词: 受控双向远程量子控制, 五量子团簇态, 酉算子限制集, 成功概率, 效率

Abstract:

Fusing the ideas of remote quantum control and bidirectional controlled quantum state teleportation, a concept of Controlled Bidirectional Remote Quantum Control（CBRQC） is proposed. Concretely, by employing five-qubit entanglements, two CBRQC protocols are proposed for implementing arbitrary single-qubit operation pair. These two schemes are probabilistic, and in the first scheme increasing some local Pauli operations will cause both this scheme success probability and its intrinsic efficiency to be doubled. As for teleporting the restricted sets of operations by two-way, two deterministic schemes are put forward, one of which is overall more optimal than the others, and both the schemes success probability and their efficiency can be drastically increased. This paper compares these schemes from five different aspects of quantum and classical resource consumption, necessary-operation complexity, success probability and intrinsic efficiency. This paper illustrates the reasons for choosing quantum channels, and points out that these schemes are secure. Moreover, the experimental feasibility of these schemes are confirmed with respect to the nowadays techniques.

Key words: controlled bidirectional remote quantum control, five-qubit cluster state, restricted sets of unitary operations, success probability, efficiency