Measurement-Based Variational Quantum Eigensolver.

Autor:	Ferguson RR; Institute for Quantum Computing and Department of Physics and Astronomy, University of Waterloo, Waterloo N2L 3G1, Canada., Dellantonio L; Institute for Quantum Computing and Department of Physics and Astronomy, University of Waterloo, Waterloo N2L 3G1, Canada., Balushi AA; Institute for Quantum Computing and Department of Physics and Astronomy, University of Waterloo, Waterloo N2L 3G1, Canada., Jansen K; NIC, DESY Zeuthen, Platanenallee 6, 15738 Zeuthen, Germany., Dür W; Institut für Theoretische Physik, Universität Innsbruck, Technikerstraße 21a, 6020 Innsbruck, Austria., Muschik CA; Institute for Quantum Computing and Department of Physics and Astronomy, University of Waterloo, Waterloo N2L 3G1, Canada.; Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L 2Y5, Canada.
Jazyk:	angličtina
Zdroj:	Physical review letters [Phys Rev Lett] 2021 Jun 04; Vol. 126 (22), pp. 220501.
DOI:	10.1103/PhysRevLett.126.220501
Abstrakt:	Variational quantum eigensolvers (VQEs) combine classical optimization with efficient cost function evaluations on quantum computers. We propose a new approach to VQEs using the principles of measurement-based quantum computation. This strategy uses entangled resource states and local measurements. We present two measurement-based VQE schemes. The first introduces a new approach for constructing variational families. The second provides a translation of circuit- to measurement-based schemes. Both schemes offer problem-specific advantages in terms of the required resources and coherence times.
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu