Entanglement of two harmonic modes coupled by angular momentum
We examine the entanglement induced by an angular momentum coupling between two harmonic systems. The Hamiltonian corresponds to that of a charged particle in a uniform magnetic field in an anisotropic quadratic potential or, equivalently, to that of a particle in a rotating quadratic potential. We...
Guardado en:
| Autores principales: | , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2011
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/126316 |
| Aporte de: |
| id |
I19-R120-10915-126316 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Física Quantum entanglement Physics Quantum discord Angular momentum Quantum state Amplitude damping channel Angular momentum coupling Quantum electrodynamics Squashed entanglement Total angular momentum quantum number Quantum mechanics |
| spellingShingle |
Física Quantum entanglement Physics Quantum discord Angular momentum Quantum state Amplitude damping channel Angular momentum coupling Quantum electrodynamics Squashed entanglement Total angular momentum quantum number Quantum mechanics Rebón, Lorena Rossignoli, Raúl Dante Entanglement of two harmonic modes coupled by angular momentum |
| topic_facet |
Física Quantum entanglement Physics Quantum discord Angular momentum Quantum state Amplitude damping channel Angular momentum coupling Quantum electrodynamics Squashed entanglement Total angular momentum quantum number Quantum mechanics |
| description |
We examine the entanglement induced by an angular momentum coupling between two harmonic systems. The Hamiltonian corresponds to that of a charged particle in a uniform magnetic field in an anisotropic quadratic potential or, equivalently, to that of a particle in a rotating quadratic potential. We analyze both the vacuum and thermal entanglement, thereby obtaining analytic expressions for the entanglement entropy and negativity through the Gaussian state formalism. It is shown that vacuum entanglement diverges at the edges of the dynamically stable sectors, increasing with the angular momentum and saturating for strong fields, whereas at finite temperature entanglement is nonzero just within a finite field or frequency window and no longer diverges. Moreover, the limit temperature for entanglement is finite in the whole stable domain. The thermal behavior of the Gaussian quantum discord and its difference from the negativity is also discussed. |
| format |
Articulo Articulo |
| author |
Rebón, Lorena Rossignoli, Raúl Dante |
| author_facet |
Rebón, Lorena Rossignoli, Raúl Dante |
| author_sort |
Rebón, Lorena |
| title |
Entanglement of two harmonic modes coupled by angular momentum |
| title_short |
Entanglement of two harmonic modes coupled by angular momentum |
| title_full |
Entanglement of two harmonic modes coupled by angular momentum |
| title_fullStr |
Entanglement of two harmonic modes coupled by angular momentum |
| title_full_unstemmed |
Entanglement of two harmonic modes coupled by angular momentum |
| title_sort |
entanglement of two harmonic modes coupled by angular momentum |
| publishDate |
2011 |
| url |
http://sedici.unlp.edu.ar/handle/10915/126316 |
| work_keys_str_mv |
AT rebonlorena entanglementoftwoharmonicmodescoupledbyangularmomentum AT rossignolirauldante entanglementoftwoharmonicmodescoupledbyangularmomentum |
| bdutipo_str |
Repositorios |
| _version_ |
1764820450363310080 |