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quant-ph2025
Reducing quantum resources for observable estimation with window-assisted coherent QPE
Harriet Apel, Cristian L. Cortes, Jessica Lemieux +1
Quantum Phase Estimation (QPE) routines are known to fail probabilistically even with perfect gates and input states. This effect stems from an incompatibility of finite-sized quan…
quant-ph2019
Quantum simulation by qubitization without Toffoli gates
Mark Steudtner, Stephanie Wehner
Qubitization is a modern approach to estimate Hamiltonian eigenvalues without simulating its time evolution. While in this way approximation errors are avoided, its resource and ga…
quant-ph2018
Quantum codes for quantum simulation of Fermions on a square lattice of qubits
Mark Steudtner, Stephanie Wehner
Quantum simulation of fermionic systems is a promising application of quantum computers, but in order to program them, we need to map fermionic states and operators to qubit states…