Trotterless Simulation of Open Quantum Systems for NISQ Quantum Devices

• URL: http://arxiv.org/abs/2410.03854v1
• Date: Fri, 4 Oct 2024 18:37:49 GMT
• Title: Trotterless Simulation of Open Quantum Systems for NISQ Quantum Devices
• Authors: Colin Burdine, Enrique P. Blair,
• Abstract summary: We propose a new simulation method based on the derivation of a Kraus operator series representation of the system. We identify a class of open quantum systems for which this method produces circuits of time-independent depth.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The simulation of quantum systems is one of the flagship applications of near-term NISQ (noisy intermediate-scale quantum) computing devices. Efficiently simulating the rich, non-unitary dynamics of open quantum systems remains challenging on NISQ hardware. Current simulation methods for open quantum systems employ time-stepped Trotter product formulas ("Trotterization") which can scale poorly with respect to the simulation time and system dimension. Here, we propose a new simulation method based on the derivation of a Kraus operator series representation of the system. We identify a class of open quantum systems for which this method produces circuits of time-independent depth, which may serve as a desirable alternative to Trotterization, especially on NISQ devices.

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