TY - JOUR
T1 - From Pulses to Circuits and Back Again
T2 - A Quantum Optimal Control Perspective on Variational Quantum Algorithms
AU - Magann, Alicia B.
AU - Arenz, Christian
AU - Grace, Matthew D.
AU - Ho, Tak San
AU - Kosut, Robert L.
AU - McClean, Jarrod R.
AU - Rabitz, Herschel A.
AU - Sarovar, Mohan
N1 - Publisher Copyright:
© 2021 authors. Published by the American Physical Society.
PY - 2021/1
Y1 - 2021/1
N2 - The last decade has witnessed remarkable progress in the development of quantum technologies. Although fault-tolerant devices likely remain years away, the noisy intermediate-scale quantum devices of today may be leveraged for other purposes. Leading candidates are variational quantum algorithms (VQAs), which have been developed for applications including chemistry, optimization, and machine learning, but whose implementations on quantum devices have yet to demonstrate improvements over classical capabilities. In this Perspective, we propose a variety of ways that the performance of VQAs could be informed by quantum optimal control theory. A major theme throughout is the need for sufficient control resources in VQA implementations; we discuss different ways this need can manifest, outline a variety of open questions, and look to the future.
AB - The last decade has witnessed remarkable progress in the development of quantum technologies. Although fault-tolerant devices likely remain years away, the noisy intermediate-scale quantum devices of today may be leveraged for other purposes. Leading candidates are variational quantum algorithms (VQAs), which have been developed for applications including chemistry, optimization, and machine learning, but whose implementations on quantum devices have yet to demonstrate improvements over classical capabilities. In this Perspective, we propose a variety of ways that the performance of VQAs could be informed by quantum optimal control theory. A major theme throughout is the need for sufficient control resources in VQA implementations; we discuss different ways this need can manifest, outline a variety of open questions, and look to the future.
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U2 - 10.1103/PRXQuantum.2.010101
DO - 10.1103/PRXQuantum.2.010101
M3 - Article
AN - SCOPUS:85101328771
VL - 2
JO - PRX Quantum
JF - PRX Quantum
SN - 2691-3399
IS - 1
M1 - 010101
ER -