Controlled Joint Remote Preparation of a Six-Qubit Cluster-Type State by Using GHZ States
A scheme for the controlled joint remote preparation of an arbitrary six-qubit cluster-type state by using only two sets of five-qubit GHZ states as quantum channel is proposed. In our scheme, Alice firstly performs two sets of two-qubit projective measurement according to the real coefficients and the complex coefficients of the desired six-qubit cluster-type state. Then, the controller Charlie must apply another two-qubit projective measurement according to the Alice’s measurement result. Finally, Bob can obtain the desired six-qubit cluster-type state according to an appropriate unitary operation. Our scheme can achieve unit success probability.
KeywordsQuantum information Controlled joint remote preparation Six-qubit cluster-type state
This work is supported by the National Natural Science Foundation of China (Grant Nos. 11804135, 11764021, 11564018, 61765008, 11804133, 51567011), and the Research Foundation of the Education Department of Jiangxi Province (No. GJJ150339).