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- Ames Research CenterUS122 papers
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6 papers · 2 filters
A flexible high-performance simulator for verifying and benchmarking quantum circuits implemented on real hardware
Benjamin Villalonga, Sergio Boixo, Bron Nelson +4
Here we present qFlex, a flexible tensor network based quantum circuit simulator. qFlex can compute both exact amplitudes, essential for the verification of the quantum hardware, a…
PennyLane: Automatic differentiation of hybrid quantum-classical computations
Ville Bergholm, Josh Izaac, Maria Schuld +65
PennyLane is a Python 3 software framework for differentiable programming of quantum computers. The library provides a unified architecture for near-term quantum computing devices,…
Reverse Quantum Annealing Approach to Portfolio Optimization Problems
Davide Venturelli, Alexei Kondratyev
We investigate a hybrid quantum-classical solution method to the mean-variance portfolio optimization problems. Starting from real financial data statistics and following the princ…
Power of Pausing: Advancing Understanding of Thermalization in Experimental Quantum Annealers
Jeffrey Marshall, Davide Venturelli, Itay Hen +1
We investigate alternative annealing schedules on the current generation of quantum annealing hardware (the D-Wave 2000Q), which includes the use of forward and reverse annealing w…
Experimental investigation of performance differences between Coherent Ising Machines and a quantum annealer
Ryan Hamerly, Takahiro Inagaki, Peter L. McMahon +20
Physical annealing systems provide heuristic approaches to solving NP-hard Ising optimization problems. Here, we study the performance of two types of annealing machines--a commerc…
On the representation of Boolean and real functions as Hamiltonians for quantum computing
Stuart Hadfield
Mapping functions on bits to Hamiltonians acting on qubits has many applications in quantum computing. In particular, Hamiltonians representing Boolean functions are required for a…