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Shovan Dutta (University of Cambridge, UK)
Date & Time
Thu, 07 January 2021, 15:00 to 16:30
Online Seminar

Environmental coupling typically drives a quantum system to a unique steady state with very little coherence, which is a major obstacle for quantum information processing. I will talk about a simple experimental setting of an array of two-level systems with localised pump and loss that has multiple highly coherent steady states, including maximally entangled states of nonlocal Bell pairs. Such states originate from a hidden symmetry that conserves Bell pairs over long distances, leading to controllable long-range entanglement. I will discuss how to selectively prepare and observe these states in a broad range of present-day setups.
Ref:  PRL 125, 240404 (2020) [arXiv:2004.07981].

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