Efficient Joint Remote Preparation of an Arbitrary m-qudit State with Partially Entangled States
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We present an efficient scheme for multiparty joint remote preparation of an arbitrary m-qudit state by using partially entangled states as the quantum channel. One of the senders first performs a collective unitary transformation on his entangled particles and the auxiliary qubit, and then he performs a Z-basis measurement on the auxiliary qubit for transforming the partially entangled quantum channel into the two types of multi-particle entangled states. In the first case, the quantum channel shared by all the senders and the receiver is the target channel. In the second case, the quantum channel transforms into another partially entangled state which is the resource for the quantum channel transformation in the next round. Compared with other protocols, our scheme has advantage of having high success probability for joint remote preparation of an arbitrary m-qudit state via partially entangled states.
KeywordsJoint remote state preparation Partially entangled channel Unitary transformation Auxiliary qubits
This work was supported by Program for Excellent Talents in Guangxi Higher Education Institutions under Grant Nos. 41, Natural Science Foundation of Guangxi under Grant Nos. 2011GxNSFB018062, Key program of Guangxi University for Nationalities under Grant Nos. 317 and the Bagui scholarship project.