Entanglement of two noninteracting qubits via a mesoscopic system

Maryam Sadat Mirkamali, David G. Cory, and Joseph Emerson
Phys. Rev. A 98, 042327 – Published 18 October 2018

Abstract

We propose a method for entangling two noninteracting qubits by measuring their parity indirectly through an intermediate mesoscopic system. The protocol is designed to require only global control and course-grained collective measurement of the mesoscopic system along with local interactions between the target qubits and mesoscopic system. A generalization of the method measures the hamming weight of the qubits' state and probabilistically produces an entangled state by post-selecting on hamming weight one. Our technique provides a design element that can be integrated into quantum processor architectures and quantum measurement devices.

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  • Received 1 March 2018

DOI:https://doi.org/10.1103/PhysRevA.98.042327

©2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied PhysicsGeneral PhysicsQuantum Information, Science & Technology

Authors & Affiliations

Maryam Sadat Mirkamali1,2,*, David G. Cory1,3,4,5, and Joseph Emerson1,6,4

  • 1Institute for Quantum Computing, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
  • 2Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
  • 3Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
  • 4Canadian Institute for Advanced Research, Toronto, Ontario, Canada M5G 1Z8
  • 5Perimeter Institute for Theoretical Physics, Waterloo, Ontario, Canada N2L 2Y5
  • 6Department of Applied Mathematics, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1

  • *msmirkam@uwaterloo.ca

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Issue

Vol. 98, Iss. 4 — October 2018

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