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Title: Optical waveguiding by atomic entanglement in multilevel atom arrays

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
 [1];  [2];  [3]
  1. Columbia Univ., New York, NY (United States); DOE/OSTI
  2. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  3. Barcelona Inst. of Science and Technology (BIST), Barcelona (Spain); Inst. Catalana de Recerca i Estudis Avançats (ICREA), 08015 Barcelona (Spain)

The optical properties of subwavelength arrays of atoms or other quantum emitters have attracted significant interest recently. For example, the strong constructive or destructive interference of emitted light enables arrays to function as nearly perfect mirrors, support topological edge states, and allow for exponentially better quantum memories. In these proposals, the assumed atomic structure was simple, consisting of a unique electronic ground state. Within linear optics, the system is then equivalent to a periodic array of classical dielectric particles, whose periodicity supports the emergence of guided modes. However, it has not been known whether such phenomena persist in the presence of hyperfine structure, as exhibited by most quantum emitters. Here, we show that waveguiding can arise from rich atomic entanglement as a quantum many-body effect and elucidate the necessary conditions. Our work represents a significant step forward in understanding collective effects in arrays of atoms with realistic electronic structure.

Research Organization:
Columbia Univ., New York, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Programmable Quantum Materials (Pro-QM)
Sponsoring Organization:
Agència de Gestió d’Ajuts Universitaris i de Recerca; Centres de Recerca de Catalunya (CERCA) Programme/Generalitat de Catalunya; European Regional Development Fund (ERDF); European Research Council (ERC); Ministry of Economy and Competitiveness (MINECO); Ministry of Science, Innovation and Universities; State Research Agency; US Air Force Office of Scientific Research (AFOSR); US Department of the Navy, Office of Naval Research (ONR); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0019443
OSTI ID:
1625047
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 51 Vol. 116; ISSN 0027-8424
Publisher:
National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
English

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