Collective States and Symmetric Local Decoherence in Large Ensembles of Qubits
| dc.creator | Chase, Bradley A. | |
| dc.creator | Geremia, J. M. | |
| dc.date | 2008-05-19 | |
| dc.date.accessioned | 2026-07-07T09:39:43Z | |
| dc.date.available | 2026-07-07T09:39:43Z | |
| dc.description | The symmetric collective states of an atomic spin ensemble (i.e., many-body states that are invariant under particle exchange) are not preserved by decoherence that acts identically but individually on members of the ensemble. We develop a class of collective states in an ensemble of N spin-1/2 particles that is invariant under symmetric local decoherence and find that the dimension of the Hilbert space spanned by these collective states scales only as N^2. We then investigate the open system dynamics of experimentally relevant non-classical collective atomic states, including Schroedinger cat and spin squeezed states, subject to various symmetric but local decoherence models. | |
| dc.description | 4 pages with 2 figures; please see arXiv:0805.2911 for more details | |
| dc.identifier | https://arxiv.org/abs/0805.2910 | |
| dc.identifier | http://arxiv.org/abs/0805.2910 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/161278 | |
| dc.subject | Quantum Physics | |
| dc.title | Collective States and Symmetric Local Decoherence in Large Ensembles of Qubits | |
| dc.type | text |