Nonclassicality in phase-number uncertainty relations
We show that there are nonclassical states with lesser joint fluctuations of phase and number than any classical state. This is rather paradoxical since one would expect classical coherent states to be always of minimum uncertainty. The same result is obtained when we replace phase by a phase-depend...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2011 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/44590 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/44590 |
| Access Level: | acceso abierto |
| Palabra clave: | 535 Analytic representations Wigner function Quantum-mechanics Unit disc States Oscillator Fields Óptica (Física) 2209.19 Óptica Física |
| Sumario: | We show that there are nonclassical states with lesser joint fluctuations of phase and number than any classical state. This is rather paradoxical since one would expect classical coherent states to be always of minimum uncertainty. The same result is obtained when we replace phase by a phase-dependent field quadrature. Number and phase uncertainties are assessed using variance and Holevo relation. |
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