1. Long-Time Preservation of Nonlocal Entanglement
- Author
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Giuseppe Compagno, Bruno Bellomo, Rosario Lo Franco, Bellomo, B, Lo Franco, R, and Compagno, G
- Subjects
Physics ,Settore FIS/02 - Fisica Teorica, Modelli E Metodi Matematici ,Health (social science) ,General Computer Science ,General Mathematics ,General Engineering ,Quantum entanglement ,Education ,Quantum nonlocality ,General Energy ,Bell's theorem ,Non-locality, Bell inequality, open quantum systems ,General Environmental Science ,Mathematical physics - Abstract
We investigate how nonlocal entanglement, as identified by violations of a Bell inequality, may be preserved during the evolution. Our system consists of two qubits each embedded in a zero-temperature bosonic reservoir evolving independently and initially in an entangled mixed state. We show that the violation of the Bell inequality can be related to the single-qubit population of excited state in such a way that, by appropriately choosing structured environments that give rise to sufficiently high values of population trapping, long-time preservation of nonlocal entanglement can be correspondingly achieved.
- Published
- 2009
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