Using squeezed field to preserve two-atom entanglement against spontaneous emissions
arXiv:0807.0965 · doi:10.1088/1751-8113/42/3/035304
Abstract
Tunable interaction between two atoms in a cavity is realized by interacting the two atoms with an extra controllable single-mode squeezed field. Such a controllable interaction can be further used to control entanglement between the two atoms against amplitude damping decoherence caused by spontaneous emissions. For the independent amplitude damping decoherence channel, entanglement will be lost completely without controls, while it can be partially preserved by the proposed strategy. For the collective amplitude damping decoherence channel, our strategy can enhance the entanglement compared with the uncontrolled case when the entanglement of the uncontrolled stationary state is not too large.
5 figures
References in corpus (31)
- Entanglement of Formation of an Arbitrary State of Two Qubits
- Cavity quantum electrodynamics for superconducting electrical circuits: an architecture for quantum computation
- Purification of Noisy Entanglement and Faithful Teleportation via Noisy Channels
- Finite-Time Disentanglement via Spontaneous Emission
- Quantum Open System Theory: Bipartite Aspects
- Creation of Entanglement by Interaction with a Common Heat Bath
- Entangled states and collective nonclassical effects in two-atom systems
- Environment Induced Entanglement in Markovian Dissipative Dynamics
- Optical selection rules and phase-dependent adiabatic state control in a superconducting quantum circuit
- Cavity cooling of a single atom
- Entangled light from white noise
- Sudden Death of Entanglement: Classical Noise Effects
- Entanglement purification and quantum error correction
- Cooling to the Ground State of Axial Motion for One Atom Strongly Coupled to an Optical Cavity
- Controllability properties for finite dimensional quantum Markovian master equations
- Stabilising entanglement by quantum jump-based feedback
- Controllable coupling between flux qubits
- Non-Markovian Quantum Trajectories Versus Master Equations: Finite Temperature Heat Bath
- Dynamical creation of entanglement by homodyne-mediated feedback
- Optimal control of entanglement via quantum feedback
- Optimal Decoherence Control in non-Markovian Open, Dissipative Quantum Systems
- Further results on entanglement detection and quantification from the correlation matrix criterion
- Optimal quantum codes for preventing collective amplitude damping
- Entanglement between qubits induced by a common environment with a gap
- Squeezing arbitrary cavity-field states through their interaction with a single driven atom
- Stationary two-atom entanglement induced by nonclassical two-photon correlations
- Decoherence Control in Open Quantum System via Classical Feedback
- An Experimentally accessible geometric measure for entanglement in -qubit pure states
- Asymptotically noise decoupling for Markovian open quantum systems
- Qubits entanglement dynamics modified by an effective atomic environment
- Engineering squeezed states in high-Q cavities