Superradiant to subradiant phase transition in the open system Dicke model: dark state cascades
| dc.contributor.author | Gegg, Michael | |
| dc.contributor.author | Carmele, Alexander | |
| dc.contributor.author | Knorr, Andreas | |
| dc.contributor.author | Richter, Marten | |
| dc.date.accessioned | 2022-02-17T10:46:58Z | |
| dc.date.available | 2022-02-17T10:46:58Z | |
| dc.date.issued | 2018-01-05 | |
| dc.date.updated | 2022-02-11T07:50:38Z | |
| dc.description.abstract | Collectivity in ensembles of atoms gives rise to effects like super- and subradiance. While superradiance is well studied and experimentally accessible, subradiance remains elusive since it is difficult to track experimentally as well as theoretically. Here we present a new type of phase transition in the resonantly driven, open Dicke model that leads to a deterministic generation of subradiant states. At the transition the system switches from a predominantly superradiant to a predominantly subradiant state. Counterintuitively, the cavity decay is the crucial parameter for subradiant state generation and not the individualizing process of spontaneous decay. The observed effect is thus a cavity assisted generation of subradiant quantum coherences. Clear experimental signatures for the effect are presented and entanglement properties are discussed. Letting the system relax into the ground state generates a cascade of dark Dicke states, with dark state populations up to unity. Furthermore we introduce a collectivity measure that allows to quantify collective behaviour. | en |
| dc.description.sponsorship | DFG, 182087777, SFB 951: Hybrid Inorganic/Organic Systems (HIOS) for Opto-Electronics | en |
| dc.description.sponsorship | DFG, 43659573, SFB 787: Halbleiter - Nanophotonik: Materialien, Modelle, Bauelemente | en |
| dc.identifier.eissn | 1367-2630 | |
| dc.identifier.uri | https://depositonce.tu-berlin.de/handle/11303/16425 | |
| dc.identifier.uri | http://dx.doi.org/10.14279/depositonce-15201 | |
| dc.language.iso | en | en |
| dc.rights.uri | https://creativecommons.org/licenses/by/3.0/ | en |
| dc.subject.ddc | 530 Physik | de |
| dc.subject.other | Dicke model | en |
| dc.subject.other | collective effects in quantum optics | en |
| dc.subject.other | superradiance and subradiance | en |
| dc.subject.other | quantum entanglement | en |
| dc.subject.other | specific phase transitions | en |
| dc.title | Superradiant to subradiant phase transition in the open system Dicke model: dark state cascades | en |
| dc.type | Article | en |
| dc.type.version | publishedVersion | en |
| dcterms.bibliographicCitation.articlenumber | 013006 | en |
| dcterms.bibliographicCitation.doi | 10.1088/1367-2630/aa9cdd | en |
| dcterms.bibliographicCitation.issue | 1 | en |
| dcterms.bibliographicCitation.journaltitle | New Journal of Physics | en |
| dcterms.bibliographicCitation.originalpublishername | IOP | en |
| dcterms.bibliographicCitation.originalpublisherplace | Bristol | en |
| dcterms.bibliographicCitation.volume | 20 | en |
| tub.accessrights.dnb | free | en |
| tub.affiliation | Fak. 2 Mathematik und Naturwissenschaften::Inst. Theoretische Physik::AG Nichtlineare Optik und Quantenelektronik | de |
| tub.affiliation.faculty | Fak. 2 Mathematik und Naturwissenschaften | de |
| tub.affiliation.group | AG Nichtlineare Optik und Quantenelektronik | de |
| tub.affiliation.institute | Inst. Theoretische Physik | de |
| tub.publisher.universityorinstitution | Technische Universität Berlin | en |