Scientific Activities
Seminars
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Seminar of Institute of Physics: | |
| Title | Quantum Information Transfer between Two Qubits: An Introduction |
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| Speaker | Prof. Nguyen Van Hieu |
| Affiliation | Institute of Materials Science, Vietnam Academy of Science and Technology |
| Date | Tuesday, 10-03-2009 |
| Time | 10g, Thứ Ba |
| Location | Meeting room, 1st floor, Institute of Physics, 10 Daotan, Thule, Badinh, Hanoi |
| Abstract | This article is the beginning of a series of theoretical works of the authors and their research group to study the physical mechanism of the quantum information (QI) transfer between two qubits. As a simple example a two-spin-qubit system with the spin-spin direct coupling and without the interaction with the environment is investigated. The rate equations are exactly solved and the interpretation of the expressions of their solution as a physical mechanism of the QI transfer between two qubits is presented. This exact solution is used to study the entanglement conservation in several classes of quantum states of the system. A general method for studying arbitrary systems of two coupled spin-qubits interacting with the environment is also proposed. |