Activities
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Seminars
| Seminar on Theoretical and Computational Physics:
| | Title | Controlled Remote State Preparation
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| Speaker | ThS. Cao Thi Bich
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| Affiliation | Center for Theoretical physics, Institute of Physics,V AST
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| Date | Tuesday, 16-12-2014
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| Time | 9:30 AM
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| Location | Meeting room, first floor, Institute of physics, 10 Dao Tan, Ba Dinh, Hanoi
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| Abstract | Firstly, by using two different cluster states we propose two protocols which allow two distant parties to simultaneously and deterministically exchange their states under control of a third remote party in such a way that they cannot succeed without permission of the controller. Secondly, we construct a quantum circuit to produce a task-oriented partially entangled state and use it as the quantum channel for controlled joint remote state preparation. Unlike most previous works, where the parameters of the quantum channel are given to the receiver, here we give them to the supervisor. The total success probability of the protocol is 100% and no extra resources are needed. Notably, such apparent perfection does not depend on the entanglement degree of the shared quantum channel.
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