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quant-ph2026
Sublinear thermal state and ground state preparation for free fermions via system-bath interaction
Zhiyan Ding, Lin Lin, Ke Wang
Dissipative algorithms for preparing thermal and ground states typically require a total Hamiltonian simulation time that grows at least linearly with system size , even when th…
quant-ph2026
Provably Efficient Long-Time Exponential Decompositions of Non-Markovian Gaussian Baths
Zhen Huang, Zhiyan Ding, Ke Wang +3
Gaussian baths are widely used to model non-Markovian environments, yet the cost of accurate simulation at long times remains poorly understood, especially when spectral densities…