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Geometric phase of two-qubit system with dissipative effects. (English) Zbl 1298.81038

Summary: Geometric phase is investigated for two initially entangled qubits interacting with environment. We find that time-dependent Pancharatnam phase oscillates with almost the same frequency and slight different amplitude. The result provides a useful clue to implement geometric quantum calculation.

MSC:

81P45 Quantum information, communication, networks (quantum-theoretic aspects)
81Q70 Differential geometric methods, including holonomy, Berry and Hannay phases, Aharonov-Bohm effect, etc. in quantum theory
Full Text: DOI

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