Dimerization of Many-Body Subradiant States in Waveguide Quantum Electrodynamics
- 18 October 2021
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 127 (17), 173601
- https://doi.org/10.1103/physrevlett.127.173601
Abstract
We theoretically study subradiant states in an array of atoms coupled to photons propagating in a one-dimensional waveguide focusing on the strongly interacting many-body regime with large excitation fill factor . We introduce a generalized many-body entropy of entanglement based on exact numerical diagonalization followed by a high-order singular value decomposition. This approach has allowed us to visualize and understand the structure of a many-body quantum state. We reveal the breakdown of fermionized subradiant states with increase of with the emergence of short-ranged dimerized antiferromagnetic correlations at the critical point and the complete disappearance of subradiant states at .
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Funding Information
- Russian Presidential Academy of National Economy and Public Administration (MD-243.2020.2)
- Foundation for the Advancement of Theoretical Physics and Mathematics
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