Quantum simulation of parity-time symmetry breaking with a superconducting quantum processor
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Communications physics, Volume 4, issue 1
AbstractThe 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.
| openaire: EC/H2020/862644/EU//QUARTET
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