Variational Quantum Simulation of Time-Local Quantum Master Equations via Quantum Jump

Strong coupling and environmental memory render many open quantum systems intractable to classical computation. To overcome this barrier, we present a variational quantum algorithm capable of solving generalized form time-local quantum master equations directly on Noisy Intermediate-Scale Quantum (NISQ) processors. Our approach combines four key innovations: (1) a pair-vector stochastic Schr¨odinger equation tounravel time-local quantum master equations, (2) deterministic evolution projected onto parameterized circuitsvia McLachlan’s principle and stochasitc jump implementation via singular-value decomposition, (3) usingHadamard tests circuits to measure the jump rates and the element of reduced density matrices and (4) usingno-evolution sampling to sample trajectories. The resulting protocol remains resilient under realistic hardwarenoise. We validate it on both classical simulators and a 66-qubit superconducting processor for solving Redfield master equation and fourth-order time-local non-Markovian master equation and find that it can successfully capture key features of complex open quantum dynamics - including non-Markovian oscillations and strong-coupling effects. Our approach establishes a practical pathway toward scalable simulations of open quantum systems in the NISQ era.