Entanglement and phase transitions in a exciton-polariton bec confined in a photonic crystal nanocavity
In this work we study a polariton-exciton system confined in photonic crystal nanocavity with embedded quantum dot. Using a separable state of the type BCS, for the matter subsystem, product by a coherent state, for the photonic mode, we compute the ground state energy of N polaritons. Also, we char...
- Autores:
-
Guirales, Guillermo A.
Vinck-Posada, Herbert
Rodríguez, Boris A.
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2013
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/49307
- Acceso en línea:
- https://repositorio.unal.edu.co/handle/unal/49307
http://bdigital.unal.edu.co/42764/
- Palabra clave:
- Entrelazamiento
operador de densidad de pares
transición de fase cuántica
BEC de polaritones
discordia cuántica
Entanglement
pair density operator
quantum phase transition
polariton BEC
quantum discord
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
| Summary: | In this work we study a polariton-exciton system confined in photonic crystal nanocavity with embedded quantum dot. Using a separable state of the type BCS, for the matter subsystem, product by a coherent state, for the photonic mode, we compute the ground state energy of N polaritons. Also, we characterize the quantum coherence in the system using entanglement and discord, calculated both from the pair density matrix. Finally, we introduce temperature and magnetic field to our model and we obtain signatures of phase transitions in the quantum correlations of the system. |
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