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quant-ph2025
Unitary Dilation Strategy Towards Efficient and Exact Simulation of Non-Unitary Quantum Evolutions
Aman Mehta, Scott E. Smart, Joseph Peetz +2
Simulating quantum systems with their environments often requires non-unitary operations, and mapping these to quantum devices often involves expensive dilations or prohibitive mea…
quant-ph2025
Learning Orthogonal Random Unitary Channels with Contracted Quantum Approaches and Simplex Optimization
Scott E. Smart, Alexander Jürgens, Joseph Peetz +1
Random (mixed) unitary channels describe an important subset of quantum channels, which are commonly used in quantum information, noise modeling, and quantum error mitigation. Desp…
quant-ph2025
Hamiltonian Simulation via Stochastic Zassenhaus Expansions
Joseph Peetz, Prineha Narang
We introduce the stochastic Zassenhaus expansions (SZEs), a class of ancilla-free quantum algorithms for Hamiltonian simulation. These algorithms map nested Zassenhaus formulas ont…