Interplay between entanglement and entropy in two-qubit systems

Laura Mazzola; Sabrina Maniscalco; Jyrki Piilo; Kalle-Antti Suominen

doi:10.1088/0953-4075/43/8/085505

Interplay between entanglement and entropy in two-qubit systems

Laura Mazzola, Sabrina Maniscalco, Jyrki Piilo, Kalle-Antti Suominen

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21 Citations (Scopus)

Abstract

We study the exact entanglement dynamics of two qubits interacting with a common zero-temperature non-Markovian reservoir. We consider the two qubits initially prepared in Bell-like states or extended Werner-like states. We study the dependence of the entanglement dynamics on both the degree of purity and the amount of entanglement of the initial state. We also explore the relation between the entanglement and the von Neumann entropy dynamics and find that these two quantities are correlated for initial Bell-like states.

Original language	English
Article number	085505
Number of pages	10
Journal	Journal of Physics B: Atomic and Molecular Physics
Volume	43
Issue number	8
DOIs	https://doi.org/10.1088/0953-4075/43/8/085505
Publication status	Published - 28 Apr 2010

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AB - We study the exact entanglement dynamics of two qubits interacting with a common zero-temperature non-Markovian reservoir. We consider the two qubits initially prepared in Bell-like states or extended Werner-like states. We study the dependence of the entanglement dynamics on both the degree of purity and the amount of entanglement of the initial state. We also explore the relation between the entanglement and the von Neumann entropy dynamics and find that these two quantities are correlated for initial Bell-like states.

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DO - 10.1088/0953-4075/43/8/085505

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Interplay between entanglement and entropy in two-qubit systems

Abstract

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