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Long-Range Coherence and Multiple Steady States in a Lossy Qubit Array
- Source :
- Phys. Rev. Lett. 125, 240404 (2020)
- Publication Year :
- 2020
-
Abstract
- We show that a simple experimental setting of a locally pumped and lossy array of two-level quantum systems can stabilize states with strong long-range coherence. Indeed, by explicit analytic construction, we show there is an extensive set of steady-state density operators, from minimally to maximally entangled, despite this being an interacting open many-body problem. Such nonequilibrium steady states arise from a hidden symmetry that stabilizes Bell pairs over arbitrarily long distances, with unique experimental signatures. We demonstrate a protocol by which one can selectively prepare these states using dissipation. Our findings are accessible in present-day experiments.<br />Comment: Accepted version: 4 pages, 3 figures + supplement (includes minor refinements and additional sections in the supplement)
- Subjects :
- Condensed Matter - Quantum Gases
Quantum Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 125, 240404 (2020)
- Publication Type :
- Report
- Accession number :
- edsarx.2004.07981
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.125.240404