4 papers · 1 filter
Where the Quantum Lives in D-Wave Hybrid Portfolio Optimization: An Operational Decomposition Audit
Luis Lozano
Hybrid quantum-classical solvers conceal how reported performance divides between quantum-processing-unit (QPU) access and other service time. We audit D-Wave's Leap service on car…
A Penalty-Free Pipeline for Direct Quantum-Annealer Portfolio Optimization
Luis Lozano
Cardinality-constrained portfolio selection is routinely cast as a quadratic unconstrained binary optimization (QUBO) and submitted to a quantum processing unit (QPU) for direct an…
Schedule-dependent basin occupation and instance-specific effective scales in cycled reverse annealing on programmable quantum annealers
Luis Lozano
Reverse annealing initializes a programmable quantum annealer in a chosen classical state, reintroduces quantum fluctuations down to a pause point, and returns to readout; repeated…
A calibrated diagnostic for reverse-anneal sampling in programmable quantum annealers
Luis Lozano
Reverse annealing is widely used as a heuristic sampler on programmable quantum annealers, but it is often unclear whether the readout has erased its initialization memory or wheth…