A structure-preserving error mitigation technique that inverts a noise matrix measured from an identity-equivalent circuit is demonstrated on variational simulations of a non-Hermitian Ising chain, showing improved agreement with exact results.
Non-Hermitian ultra-strong bosonic clustering through interaction-induced caging
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abstract
We uncover a new mechanism whereby the triple interplay of non-Hermitian pumping, bosonic interactions and nontrivial band topology leads to ultra-strong bosonic condensation. The extent of condensation goes beyond what is naively expected from the interaction-induced trapping of non-Hermitian pumped states, and is based on an emergent caging mechanism that can be further enhanced by topological boundary modes. Beyond our minimal model with 2 bosons, this caging remains applicable for generic many-boson systems subject to a broad range of density interactions and non-Hermitian hopping asymmetry. Our novel new mechanism for particle localization and condensation would inspire fundamental shifts in our comprehension of many-body non-Hermitian dynamics and opens new avenues for controlling and manipulating bosons.
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Circuit structure-preserving error mitigation for High-Fidelity Quantum Simulations
A structure-preserving error mitigation technique that inverts a noise matrix measured from an identity-equivalent circuit is demonstrated on variational simulations of a non-Hermitian Ising chain, showing improved agreement with exact results.