Quantum simulation of parity-time symmetry breaking with a superconducting quantum processor
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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8
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Communications Physics, Volume 4, issue 1
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 (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.Description
| openaire: EC/H2020/862644/EU//QUARTET
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Dogra, S, Melnikov, A A & Paraoanu, G S 2021, 'Quantum simulation of parity-time symmetry breaking with a superconducting quantum processor', Communications Physics, vol. 4, no. 1, 26. https://doi.org/10.1038/s42005-021-00534-2