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- Ames Research CenterUS122 papers
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14 papers · 2 filters
A Parameter Setting Heuristic for the Quantum Alternating Operator Ansatz
James Sud, Stuart Hadfield, Eleanor Rieffel +2
Parameterized quantum circuits are widely studied approaches for tackling optimization problems. A prominent example is the Quantum Alternating Operator Ansatz (QAOA), an approach…
Master Equation Emulation and Coherence Preservation with Classical Control of a Superconducting Qubit
Evangelos Vlachos, Haimeng Zhang, Vivek Maurya +3
Open quantum systems are a topic of intense theoretical research. The use of master equations to model a system's evolution subject to an interaction with an external environment i…
Real-Time Krylov Theory for Quantum Computing Algorithms
Yizhi Shen, Katherine Klymko, James Sud +3
Quantum computers provide new avenues to access ground and excited state properties of systems otherwise difficult to simulate on classical hardware. New approaches using subspaces…
Suppressing quantum errors by scaling a surface code logical qubit
Rajeev Acharya, Igor Aleiner, Richard Allen +154
Practical quantum computing will require error rates that are well below what is achievable with physical qubits. Quantum error correction offers a path to algorithmically-relevant…
Characterizing low-frequency qubit noise
Filip Wudarski, Yaxing Zhang, Alexander Korotkov +2
Fluctuations of the qubit frequencies are one of the major problems to overcome on the way to scalable quantum computers. Of particular importance are fluctuations with the correla…
Two-Unitary Decomposition Algorithm and Open Quantum System Simulation
Nishchay Suri, Joseph Barreto, Stuart Hadfield +3
Simulating general quantum processes that describe realistic interactions of quantum systems following a non-unitary evolution is challenging for conventional quantum computers tha…