5 papers · 1 filter
Quantum Simulation via Stochastic Combination of Unitaries
Joseph Peetz, Scott E. Smart, Prineha Narang
Quantum simulation algorithms often require numerous ancilla qubits and deep circuits, prohibitive for near-term hardware. We introduce a framework for simulating quantum channels…
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…
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…
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…
Simulation of open quantum systems via low-depth convex unitary evolutions
Joseph Peetz, Scott E. Smart, Spyros Tserkis +1
Simulating physical systems on quantum devices is one of the most promising applications of quantum technology. Current quantum approaches to simulating open quantum systems are st…