Activities
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Seminars
| Seminar on Theoretical and Computational Physics:
| | Title | Economic vs. Deterministic joint remote state preparationEconomic vs. Deterministic joint remote state preparation
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| Speaker | Nung Van Don & Cao Thi Bich
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| Affiliation | Center for Theoretical Physics, Institute of Physics
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| Date | Tuesday, 20-09-2011
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| Time | 10:00 AM
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| Location | Meeting room on the 1st floor, Institute of Physics, 10 Dao Tan, Ba Dinh, Hanoi
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| Abstract | We revisit the recent protocols in [J. Phys. B44, 095501 (2011)] for joint remote preparation of four-qubit cluster-type states. We show errors in those protocols and improve them considerably in both quantum resource and classical communication cost. Then we put forward a new nontrivial three-step strategy to execute joint remote state preparation via Einstein–Podolsky–Rosen pairs deterministically. At variance with all existing protocols, in ours the receiver contributes actively in both preparation and reconstruction steps, although he knows nothing about the quantum state to be prepared.
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