A method for teleporting an unknown quantum state and its application

Details A method for teleporting an unknown quantum state and its application A method for teleporting an unknown quantum state and its application

2005-04-28

arxiv.org/abs/quant-ph/0504213v1

Communications in Theoretical Physics, 47 (2007) 629.

Physics

Quantum Physics

3 pages, no figure

Scientific paper

We suggest a method for teleporting an unknown quantum state. In this method the sender Alice first uses a Controlled-Not operation on the particle in the unknown quantum state and an ancillary particle which she wants to send to the receiver Bob. Then she sends ancillary particle to Bob. When Alice is informed by Bob that the ancillary particle is received, she performs a local measurement on the particle and sends Bob the outcome of the local measurement via a classical channel. Depending on the outcome Bob can restore the unknown quantum state, which Alice destroyed, on the ancillary particle successfully. As an application of this method we propose a quantum secure direct communication protocol.

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