Constructing Noise-Robust Quantum Gates via Pontryagin's Maximum Principle

Autor:	Hanson, Joshua, Lucarelli, Dennis
Rok vydání:	2024
Předmět:	Quantum Physics Electrical Engineering and Systems Science - Systems and Control
Druh dokumentu:	Working Paper
Popis:	Reliable quantum information technologies depend on precise actuation and techniques to mitigate the effects of undesired disturbances such as environmental noise and imperfect calibration. In this work, we present a general framework based in geometric optimal control theory to synthesize smooth control pulses for implementing arbitrary noise-robust quantum gates. The methodology applies to generic unitary quantum dynamics with any number of qubits or energy levels, any number of control fields, and any number of disturbances, extending existing dynamical decoupling approaches that are only applicable for limited gate sets or small systems affected by one or two disturbances. The noise-suppressing controls are computed via indirect trajectory optimization based on Pontryagin's maximum principle, eliminating the need to make heuristic structural assumptions on parameterized pulse envelopes. Comment: 10 pages, 8 figures, accepted to IEEE International Conference on Quantum Computing & Engineering (QCE24)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2409.12287 Zobrazit plný text záznamu View this record from Arxiv