Title:	Generating symmetry-protected long-range entanglement
Authors:	Dutta, Shovan Kuhr, Stefan Cooper, Nigel R.
Issue Date:	23-Feb-2024
Publisher:	American Physical Society
Citation:	Physical Review Research, 2024, Vol.6, L012039
Abstract:	Entanglement between spatially distant qubits is perhaps the most counterintuitive and vital resource for distributed quantum computing. However, despite a few special cases, there is no known general procedure to maximally entangle two distant parts of an interacting many-body system. Here we present a symmetry based approach, whereby one applies several timed pulses to drive a system to a particular symmetry sector with maximal bipartite long-range entanglement. As a concrete example, we demonstrate how a simple sequence of on-site pulses on a qubit array can efficiently produce multiple stable nonlocal Bell pairs, realizable in present-day atomic and photonic experimental platforms. More generally, our approach paves a route for exotic state preparation by harnessing symmetry. For instance, we show how it allows the creation of long-sought after superconducting η pairs in a repulsive Hubbard model.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/8276
Alternative Location:	https://arxiv.org/abs/2201.10564 http://dx.doi.org/10.1103/PhysRevResearch.6.L012039 https://ui.adsabs.harvard.edu/abs/2024PhRvR...6a2039D/abstract
Copyright:	2024, American Physical Society
Appears in Collections:	Research Papers (TP)

Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.