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    • Keywords


      Joint remote state preparation; arbitrary four-qubit W-type entangled state; four- and two-qubit projective measurement

    • Abstract


      We present three schemes for the joint remote state preparation (JRSP) of an arbitrary four-qubit W-type entangled state with complex coefficients via four and two three-qubit GHZ states as the quantum channel. In these schemes, two senders (or $N$ senders) share the original state which they wish to help the receiver to remotely prepare. To complete the JRSP schemes, some novel sets of mutually orthogonal basis vectors are introduced. It isshown that, only if two senders (or N senders) collaborate with each other, and perform projective measurements under suitable measuring basis on their own qubits, the receiver can reconstruct the original state by means of some appropriate unitary operations. It is shown that, in all our schemes, the total success probability of the JRSP can reach 1. Specially, compared with the first scheme in our paper, the entanglement resource in the second scheme can be reduced. This means that the scheme is more efficient and economical.

    • Author Affiliations



      1. School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, Huaian 223300, People’s Republic of China
    • Dates

  • Pramana – Journal of Physics | News

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