2016
DOI: 10.1140/epjp/i2016-16380-3
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Quantum correlations dynamics and decoherence of a three-qubit system subject to classical environmental noise

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Cited by 39 publications
(50 citation statements)
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“…Overall, having compared the results obtained in this subsection with those obtained in the previous one, we find that the amount of entanglement initially present in the four-qubit GHZ-type states is more robustly shielded from decoherence than that of the four-qubit W-type states when the qubits are embedded in a common environment. This is in agreement with what was previously found in the three-qubit form of the model studied in the present paper [57,58,73]. Besides, unlike GHZ-type states in which the CE coupling always preserves more entanglement than the IEs coupling, we find that for W-type states, the IEs and CE coupling may play opposite roles in the preservation of entanglement among the qubits, depending upon the purity q and the period of time considered.…”
Section: W-type States: the Case Of Independent Environments Couplingsupporting
confidence: 93%
“…Overall, having compared the results obtained in this subsection with those obtained in the previous one, we find that the amount of entanglement initially present in the four-qubit GHZ-type states is more robustly shielded from decoherence than that of the four-qubit W-type states when the qubits are embedded in a common environment. This is in agreement with what was previously found in the three-qubit form of the model studied in the present paper [57,58,73]. Besides, unlike GHZ-type states in which the CE coupling always preserves more entanglement than the IEs coupling, we find that for W-type states, the IEs and CE coupling may play opposite roles in the preservation of entanglement among the qubits, depending upon the purity q and the period of time considered.…”
Section: W-type States: the Case Of Independent Environments Couplingsupporting
confidence: 93%
“…It is important to note that the same evolution operator can be obtained without any approximation but rather in the situation were the energy levels of the qubit are degenerated as in Refs. [17,19,22]. In other words, we show that when a qubit is couple to a CSF having a spectrum with frequencies that are larger than its natural frequency, its dynamics is approximately the same as the one of a qubit with degenerated energy levels coupled to the same CSF.…”
Section: Physical Modelmentioning
confidence: 69%
“…Such a result is in good agreement with what has been found in Refs. [19,22]. However, the opposite situation occurs when the qubits are initially set in the W state, that is, when the qubits are prepared in the W state, the CE configuration followed by MEs one hastens the disentanglement of the qubits than the IEs setup.…”
Section: Common Environment (Ce)mentioning
confidence: 99%
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