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Exact results on decoherence and entanglement in a system of N driven atoms and a dissipative cavity mode
| Content Provider | Semantic Scholar |
|---|---|
| Author | Bina, Matteo |
| Copyright Year | 2008 |
| Abstract | We solve the dynamics of an open quantum system where N strongly driven two-level atoms are equally coupled on resonance to a dissipative cavity mode. Analytical results are derived on decoherence, entanglement, purity, atomic correlations and cavity field mean photon number. We predict decoherencefree subspaces for the whole system and the N-qubit subsystem, the monitoring of quantum coherence and purity decay by atomic populations measurements, the conditional generation of atomic multi-partite entangled states and of cavity cat-like states. We show that the dynamics of atoms prepared in states invariant under permutation of any two components remains restricted within the subspace spanned by the completely symmetric Dicke states. We discuss examples and applications in the cases N = 3, 4. PACS. 42.50.Pq Cavity quantum electrodynamics; micromasers – 03.65.Yz Decoherence; open systems; quantum-statistical – 03.67.Bg Entanglement production and manipulation methods |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://arxiv.org/pdf/0805.0660v1.pdf |
| Alternate Webpage(s) | http://arxiv.org/pdf/0805.0660v2.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Atom Body cavities Cavity quantum electrodynamics Coherence (physics) Decoherence-free subspaces Excited state Fock state Numerous Open quantum system P1 Bacteriophage Artificial Chromosomes Photons Physics and Astronomy Classification Scheme Population Pseudo brand of pseudoephedrine Purity (quantum mechanics) Quantum decoherence Quantum entanglement Qubit Resonance newton |
| Content Type | Text |
| Resource Type | Article |
