Enhancing the controllability of quantum systems via a static field

IEEE Transactions on Automatic Control 2026 Open access

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Authors: Ruikang Liang, Eugenio Pozzoli, M. Leibscher, Mario Sigalotti, Christiane P. Koch, Ugo Boscain
DOI: 10.1109/tac.2026.3694611
Cited by: 0
References: 22

Abstract

We provide a sufficient condition for the controllability of a bilinear closed quantum system steered by a static field and a time-varying field, based on the notion of weakly conically connected spectrum. More precisely, we show that if a controlled Hamiltonian with two inputs has a weakly conically connected spectrum, then, freezing one of the two inputs at almost every constant value, the obtained single-input system is controllable. The result is illustrated with two examples, enantio-selective excitation in a chiral molecule and the driven Jaynes–Cummings Hamiltonian.

Fields of Study & Subjects

Quantum Information and Cryptography Quantum Mechanics and Applications Advanced Thermodynamics and Statistical Mechanics

Publication details

Journal / source
IEEE Transactions on Automatic Control
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Volume
71
Issue
11
Pages
1–12
Publication date
1 January 2026
Language
EN