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Quantum Simulation

Reliability of digitized quantum annealing and the decay of entanglement

arXiv
Authors: John P. S. Peterson, Roberto S. Sarthour, Alexandre M. Souza, Ivan S. Oliveira, Frederico Brito, Fernando de Melo

Year

2016

Paper ID

42630

Status

Preprint

Abstract Read

~2 min

Abstract Words

104

Citations

N/A

Abstract

We performed a banged-digital-analog simulation of a quantum annealing protocol in a two-qubit Nuclear Magnetic Resonance (NMR) quantum computer. Our experimental simulation employed up to 235 Trotter steps, with more than 2000 gates (pulses), and we obtained a protocol success above 80%. Given the exquisite control of the NMR quantum computer, we performed the simulation with different noise levels. We thus analyzed the reliability of the quantum annealing process, and related it to the level of entanglement produced during the protocol. Although the presence of entanglement is not a sufficient signature for a better-than-classical simulation, the level of entanglement achieved relates to the fidelity of the protocol.

Why This Paper Matters

  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
  • It adds a 2016 reference point for readers tracking recent quantum research.
  • We performed a banged-digital-analog simulation of a quantum annealing protocol in a two-qubit Nuclear Magnetic Resonance (NMR) quantum computer.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1611.00204 [2] arXiv https://arxiv.org/abs/1611.00204 [3] Publisher https://arxiv.org/abs/1611.00204

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