Superbunching and Nonclassicality as new Hallmarks of Superradiance

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Details zur Publikation

Autor(en): Bhatti D, von Zanthier J, Agarwal GS
Zeitschrift: Scientific Reports
Verlag: Nature Publishing Group: Open Access Journals - Option B
Jahr der Veröffentlichung: 2015
Band: 5
ISSN: 2045-2322


Abstract


Superradiance, i.e., spontaneous emission of coherent radiation by an ensemble of two-level atoms in collective states introduced by Dicke in 1954, is one of the enigmatic problems of quantum optics. The startling gist is that even though the atoms have no dipole moment they radiate with increased intensity in particular directions. Following the advances in our understanding of superradiant emission by atoms in entangled W-states we examine the quantum statistical properties of superradiance. Such investigations require the system to have at least two excitations in order to explore the photon-photon correlations of the radiation emitted by such states. We present specifically results for the spatially resolved photon-photon correlations of systems prepared in doubly excited W-states and give conditions when the atomic system emits nonclassial light. Equally, we derive the conditions for the occurrence of bunching and even of superbunching, a rare phenomenon otherwise known only from nonclassical states of light like the squeezed vacuum. We finally investigate the photon-photon cross correlations of the spontaneously scattered light and highlight the nonclassicalty of such correlations. The theoretical findings can be implemented with current technology, e.g., using ions in a linear rf-trap, atoms in an optical lattice or quantum dots in a cavity.



FAU-Autoren / FAU-Herausgeber

Bhatti, Daniel
Lehrstuhl für Experimentalphysik (Optik)
von Zanthier, Joachim Prof. Dr.
Professur für Experimentalphysik


Autor(en) der externen Einrichtung(en)
Oklahoma State University


Zitierweisen

APA:
Bhatti, D., von Zanthier, J., & Agarwal, G.S. (2015). Superbunching and Nonclassicality as new Hallmarks of Superradiance. Scientific Reports, 5. https://dx.doi.org/10.1038/srep17335

MLA:
Bhatti, Daniel, Joachim von Zanthier, and Girish S. Agarwal. "Superbunching and Nonclassicality as new Hallmarks of Superradiance." Scientific Reports 5 (2015).

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Zuletzt aktualisiert 2018-06-08 um 14:09