Abstract In the measurement-based model of quantum computing, a one-way quantum computer consisting of many qubits can be immersed in a common environment as a simple decoherence mechanism. This paper studies the dynamics of entanglement witness for 3-qubit cluster states in the common environment. The result shows that environment can induce an interesting feature in the time evolution of the entanglement witness: i.e., the periodical collapse and revival of the entanglement dynamics.
Received: 08 November 2006
Revised: 11 December 2006
Accepted manuscript online:
PACS:
03.67.Lx
(Quantum computation architectures and implementations)
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