Experimental Performance of a Quantum Simulator: Optimizing Adiabatic Evolution and Identifying Many-Body Ground States
| Autor: | A. Lee, Christopher Monroe, Crystal Senko, J. Smith, Philip Richerme, S. Korenblit |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Physics
Quantum Physics Spins Quantum simulator FOS: Physical sciences Adiabatic quantum computation Atomic and Molecular Physics and Optics symbols.namesake Quantum mechanics symbols Ising model Adiabatic process Hamiltonian (quantum mechanics) Ground state Quantum Physics (quant-ph) Quantum computer |
| Popis: | We use local adiabatic evolution to experimentally create and determine the ground-state spin ordering of a fully connected Ising model with up to 14 spins. Local adiabatic evolution---in which the system evolution rate is a function of the instantaneous energy gap---is found to maximize the ground-state probability compared with other adiabatic methods while requiring knowledge only of the lowest $\ensuremath{\sim}$$N$ of the ${2}^{N}$ Hamiltonian eigenvalues. We also demonstrate that the ground-state ordering can be experimentally identified as the most probable of all possible spin configurations, even when the evolution is highly nonadiabatic. |
| Databáze: | OpenAIRE |
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