Deterministic creation and stabilization of entanglement in circuit QED by homodyne-mediated feedback control

Details Deterministic creation and stabilization of entanglement in circuit QED by homodyne-mediated feedback control Deterministic creation and stabilization of entanglement in circuit QED by homodyne-mediated feedback control

2010-05-17

arxiv.org/abs/1005.2810v1

Phys. Rev. A 82, 032335 (2010)

Physics

Quantum Physics

6 pages, 4 figures

Scientific paper

10.1103/PhysRevA.82.032335

In the solid-state circuit QED system and based on the homodyne measurement in dispersive regime, we demonstrate that a homodyne-current-based feedback can create and stabilize highly entangled two-qubit states in the presence of moderate noisy environment. Particularly, we present an extended analysis for the current-based Markovian feedback, which leads to an improved filtered-current-based feedback scheme. We show that this is essential for us to achieve the desirable control effect in present system.

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