Evolution equation for entanglement of multiqubit systems
We discuss entanglement evolution of a multiqubit system in which one of its qubits is subjected to a general noisy channel. For such a system, an evolution equation of entanglement for a lower bound for multiqubit concurrence is derived. Using this evolution equation, the entanglement dynamics of a...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
28 December 2010
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| In: |
Physical review. A, Atomic, molecular, and optical physics
Year: 2010, Volume: 82, Issue: 6, Pages: 1-6 |
| ISSN: | 1094-1622 |
| DOI: | 10.1103/PhysRevA.82.062327 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevA.82.062327 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.82.062327 
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| Author Notes: | Michael Siomau, Stephan Fritzsche |
MARC
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| 520 | |a We discuss entanglement evolution of a multiqubit system in which one of its qubits is subjected to a general noisy channel. For such a system, an evolution equation of entanglement for a lower bound for multiqubit concurrence is derived. Using this evolution equation, the entanglement dynamics of an initially mixed three-qubit state composed of a Greenberger-Horne-Zeilinger (GHZ) and a W state is analyzed if one of the qubits is affected by a phase, an amplitude, or a generalized amplitude damping channel. | ||
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