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  • Letter

Stabilizing volume-law entangled states of fermions and qubits using local dissipation

Andrew Pocklington1, Yu-Xin Wang1, Yariv Yanay2, and A. A. Clerk1

  • 1Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637, USA
  • 2Laboratory for Physical Sciences, 8050 Greenmead Dr., College Park, Maryland 20740, USA

Phys. Rev. B 105, L140301 – Published 26 April, 2022

DOI: https://doi.org/10.1103/PhysRevB.105.L140301

Abstract

We analyze a general method for the dissipative preparation and stabilization of volume-law entangled states of fermionic and qubit lattice systems in one dimension (and higher dimensions for fermions). Our approach requires minimal resources: nearest-neighbor Hamiltonian interactions that obey a suitable chiral symmetry, and the realization of just a single, spatially localized dissipative pairing interaction. In the case of a qubit array, the dissipative model we study maps to an interacting fermionic problem. Nonetheless, we analytically show the existence of a unique pure entangled steady state (a so-called rainbow state). Our ideas are compatible with a number of experimental platforms, including superconducting circuits and trapped ions.

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