Entanglement dynamics of two interacting qubits under the influence of local dissipation
| Autor: | Muzaffar Qadir Lone |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Physics
Quantum Physics Time evolution General Physics and Astronomy FOS: Physical sciences Concurrence Quantum entanglement Squashed entanglement 01 natural sciences Multipartite entanglement 010305 fluids & plasmas Qubit Quantum master equation Quantum mechanics 0103 physical sciences Master equation 010306 general physics Quantum Physics (quant-ph) |
| DOI: | 10.48550/arxiv.1506.06931 |
| Popis: | We investigate the dynamics of entanglement given by the concurrence of a two-qubit system in the non-Markovian setting. A quantum master equation is derived which is solved in the eigen basis of the system Hamiltonian for X-type initial states. A closed formula for time evolution of concurrence is presented for a pure state. It is shown that under the influence of dissipation that non-zero entanglement is created in unentangled two qubit states which decay in the same way as pure entangled states. We also show that under real circumstances, the decay rate of concurrence is strongly modified by the non-Markovinity of the evolution. Comment: Accepted in Pramana |
| Databáze: | OpenAIRE |
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