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Trapped Ion Quantum Computing Superconducting Qubits Quantum Simulation

Quantum simulation of parity-time symmetry breaking with a superconducting quantum processor

arXiv
Authors: Shruti Dogra, Artem A. Melnikov, Gheorghe Sorin Paraoanu

Year

2021

Paper ID

41352

Status

Preprint

Abstract Read

~2 min

Abstract Words

92

Citations

N/A

Abstract

The observation of genuine quantum effects in systems governed by non-Hermitian Hamiltonians has been an outstanding challenge in the field. Here we simulate the evolution under such Hamiltonians in the quantum regime on a superconducting quantum processor by using a dilation procedure involving an ancillary qubit. We observe the parity-time $mathcal{PT}$-symmetry breaking phase transition at the exceptional points, obtain the critical exponent, and show that this transition is associated with a loss of state distinguishability. In a two-qubit setting, we show that the entanglement can be modified by local operations.

Why This Paper Matters

  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
  • It adds a 2021 reference point for readers tracking recent quantum research.
  • The observation of genuine quantum effects in systems governed by non-Hermitian Hamiltonians has been an outstanding challenge in the field.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2111.12036 [2] arXiv https://arxiv.org/abs/2111.12036 [3] Publisher https://arxiv.org/abs/2111.12036

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