International Journal of Quantum Information

COLLECTIVE REMOTE STATE PREPARATION

Nguyen Ba An, Jaewan Kim

Published Oct 1, 2008• 61 citations

Abstract

We show that any M ≥ 2 distant parties who independently share the complete classical knowledge of a secret qubit state can collectively prepare the state at another remote location. Two distinct schemes for such a task are proposed: one via a single (M + 1)-partite GHZ-type state and the other via M EPR-type pairs. Analytical expressions of the total success probability are derived explicitly for both the schemes. Of interest is the M-dependence of both the success probability and the receiver's action. We also construct simple quantum circuits for the two-qubit operators whose execution is necessary to accomplish the schemes.

DOI: 10.1142/s0219749908004304

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