4 papers · 1 filter
Orthogonal Quantum Krylov Diagonalisation
Hadi Rammal, Alexandre Perrin, Oumaya Ladhari +3
Quantum subspace-diagonalization methods, particularly Quantum Krylov Diagonalization (QKD), provide a promising route for computing low-energy spectra of quantum many-body Hamilto…
Refining Quantum Phase Estimation Precision Conditions on Unitaries for Many-Electron Systems
Jérémie Messud, Wassil Sennane
Beyond ground state energy estimation, quantum phase estimation (QPE) applied to many-electron systems has the potential to output an approximation of the ground state, enabling in…
On the robustness of Quantum Phase Estimation to compute ground properties of many-electron systems
Wassil Sennane, Jérémie Messud
We propose an analysis of the Quantum Phase Estimation (QPE) algorithm applied to many-electron systems by investigating its free parameters such as the time step, number of phase…
Towards solving large QUBO problems using quantum algorithms: improving the LogQ scheme
Yagnik Chatterjee, Jérémie Messud
The LogQ algorithm encodes Quadratic Unconstrained Binary Optimization (QUBO) problems with exponentially fewer qubits than the Quantum Approximate Optimization Algorithm (QAOA). T…