Stabilising entanglement by quantum jump-based feedback

Abstract

We show that direct feedback based on quantum jump detection can be used to generate entangled steady states. We present a strategy that is insensitive to detection inefficiencies and robust against errors in the control Hamiltonian. This feedback procedure is also shown to overcome spontaneous emission effects by stabilising states with high degree of entanglement.

5 pages, 4 figures

References in corpus (4)

• Finite-Time Disentanglement via Spontaneous Emission
• Cooling to the Ground State of Axial Motion for One Atom Strongly Coupled to an Optical Cavity
• Deterministic Dicke state preparation with continuous measurement and control
• Optimal control of entanglement via quantum feedback

Cited by in corpus (6)

• Controlling entanglement by direct quantum feedback
• Avoiding entanglement sudden-death via measurement feedback control in a quantum network
• Quantum jumps and spin dynamics of interacting atoms in a strongly coupled atom-cavity system
• Effect of feedback on the control of a two-level dissipative quantum system
• Feedback control on geometric phase in dissipative two-level systems
• Using squeezed field to preserve two-atom entanglement against spontaneous emissions