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Dissipative dynamics of an entangled three-qubit system via non-Hermitian Hamiltonian: Its correspondence with Markovian and non-Markovian regimes |
| M Rastegarzadeh and M K Tavassoly† |
| 1 Laser and Optics Group, Faculty of Physics, Yazd University, Yazd 89195-741, Iran |
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Abstract We investigate an entangled three-qubit system in which only one of the qubits experiences the decoherence effect by considering a non-Hermitian Hamiltonian, while the other two qubits are isolated, i.e., do not interact with environment, directly. Then, the time evolution of the density matrix (for the pure as well as mixed initial density matrix) and the corresponding reduced density matrices are obtained, by which we are able to utilize the dissipative non-Hermitian Hamiltonian model with Markovian and non-Markovian regimes via adjusting the strange of the non-Hermitian term of the total Hamiltonian of the under-considered system.
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Received: 14 July 2020
Revised: 30 September 2020
Accepted manuscript online: 20 October 2020
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PACS:
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03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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03.65.Yz
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(Decoherence; open systems; quantum statistical methods)
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03.67.Bg
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(Entanglement production and manipulation)
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Corresponding Authors:
†Corresponding author. E-mail: mktavassoly@yazd.ac.ir
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Cite this article:
M Rastegarzadeh and M K Tavassoly Dissipative dynamics of an entangled three-qubit system via non-Hermitian Hamiltonian: Its correspondence with Markovian and non-Markovian regimes 2021 Chin. Phys. B 30 034205
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