Decoherence of interacting qubits in contact with a common environment

摘要: Decoherence of interacting two qubits placed under the influence a common environment is studied by means quantum master equation, where interact with each other via XY-coupling and two-qubit system has dephasing coupling environment. It shown that when asymmetry interaction between not small, qubit-qubit significantly affects system. To examine such an effect, decay entanglement calculated. found makes only small but also period oscillatory behaviour short.