Universität zu Köln

Kurtscheid, Christian ORCID: 0000-0002-9171-285X, Dung, David, Busley, Erik ORCID: 0000-0003-2050-5316, Vewinger, Frank ORCID: 0000-0001-7818-2981, Rosch, Achim ORCID: 0000-0002-6586-5721 and Weitz, Martin (2019). Thermally condensing photons into a coherently split state of light. Science, 366 (6467). S. 894 - 914. WASHINGTON: AMER ASSOC ADVANCEMENT SCIENCE. ISSN 1095-9203

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Abstract

The quantum state of light plays a crucial role in a wide range of fields, from quantum information science to precision measurements. Whereas complex quantum states can be created for electrons in solid-state materials through mere cooling, optical manipulation and control builds on nonthermodynamic methods. Using an optical dye microcavity, we show that photon wave packets can be split through thermalization within a potential with two minima subject to tunnel coupling. At room temperature, photons condense into a quantum-coherent bifurcated ground state. Fringe signals upon recombination show the relative coherence between the two wells, demonstrating a working interferometer with the nonunitary thermodynamic beam splitter. Our energetically driven optical-state preparation method provides a route for exploring correlated and entangled optical many-body states.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kurtscheid, Christian UNSPECIFIED orcid.org/0000-0002-9171-285X UNSPECIFIED Dung, David UNSPECIFIED UNSPECIFIED UNSPECIFIED Busley, Erik UNSPECIFIED orcid.org/0000-0003-2050-5316 UNSPECIFIED Vewinger, Frank UNSPECIFIED orcid.org/0000-0001-7818-2981 UNSPECIFIED Rosch, Achim UNSPECIFIED orcid.org/0000-0002-6586-5721 UNSPECIFIED Weitz, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-127514
DOI:	10.1126/science.aay1334
Journal or Publication Title:	Science
Volume:	366
Number:	6467
Page Range:	S. 894 - 914
Date:	2019
Publisher:	AMER ASSOC ADVANCEMENT SCIENCE
Place of Publication:	WASHINGTON
ISSN:	1095-9203
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute for Theoretical Physics
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BOSE-EINSTEIN CONDENSATION Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/12751