Implementation of the Dicke lattice model in hybrid quantum system arrays
| Autor: | Peter Rabl, Liujun Zou, D. Marcos, Jörg Schmiedmayer, Johannes Majer, Sebastian Diehl, Stefan Putz |
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| Rok vydání: | 2014 |
| Předmět: |
Physics
Quantum Physics Phase transition Condensed Matter - Mesoscale and Nanoscale Physics Spin states Condensed Matter - Superconductivity Cavity quantum electrodynamics General Physics and Astronomy FOS: Physical sciences Molecular physics Superconductivity (cond-mat.supr-con) Quantum mechanics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Quantum system Quantum Physics (quant-ph) Quantum Lattice model (physics) Phase diagram Spin-½ |
| Zdroj: | Physical review letters. 113(2) |
| ISSN: | 1079-7114 |
| Popis: | Generalized Dicke models can be implemented in hybrid quantum systems built from ensembles of nitrogen-vacancy (NV) centers in diamond coupled to superconducting microwave cavities. By engineering cavity assisted Raman transitions between two spin states of the NV defect, a fully tunable model for collective light-matter interactions in the ultra-strong coupling limit can be obtained. Our analysis of the resulting non-equilibrium phases for a single cavity and for coupled cavity arrays shows that different superradiant phase transitions can be observed using existing experimental technologies, even in the presence of large inhomogeneous broadening of the spin ensemble. The phase diagram of the Dicke lattice model displays distinct features induced by dissipation, which can serve as a genuine experimental signature for phase transitions in driven open quantum systems. Comment: 4+1 pages, 3 figures and supplementary material |
| Databáze: | OpenAIRE |
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