Long-range entanglement and multiple steady states in a lossy qubit array

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• Shovan Dutta, University of Cambridge
• Thursday 25 March 2021, 13:00-14:00
• https://bham-ac-uk.zoom.us/j/8268225040.

If you have a question about this talk, please contact Dr Hannah Price.

Environmental coupling typically drives a quantum system to a unique steady state with 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].

This talk is part of the Theoretical Physics Seminars series.

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• Bham Talks
• Theoretical Physics Seminars
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• https://bham-ac-uk.zoom.us/j/8268225040

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