Dresden 2026 – scientific programme
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QI: Fachverband Quanteninformation
QI 13: Quantum Control
QI 13.4: Talk
Wednesday, March 11, 2026, 15:45–16:00, BEY/0245
Optimal Control for Open Quantum System in Circuit Quantum Electrodynamics — •Francisco Cardenas-Lopez1 and Xi Chen2 — 1Forschungszentrum Jülich GmbH, Peter Grünberg Institute, Quantum Control (PGI-8), 52425 Jülich, Germany — 2Instituto de Ciencia de Materiales de Madrid (CSIC), Cantoblanco, E-28049 Madrid, Spain
We propose a quantum optimal control framework based on the Pontryagin Maximum Principle to design energy- and time-efficient pulses for open quantum systems. By formulating the Langevin equation of a dissipative LC circuit as a linear control problem, we derive optimized pulses with exponential scaling in energy cost, outperforming conventional shortcut-to-adiabaticity methods such as counter-diabatic driving. When applied to a resonator dispersively coupled to a qubit, these optimized pulses achieve an excellent signal-to-noise ratio comparable to longitudinal coupling schemes across varying critical photon numbers. Our results provide a significant step toward efficient control in dissipative open systems and improved qubit readout in circuit quantum electrodynamics.
Keywords: Superconducting circuit; Pontryagin Maximum Principle; Circuit quantum electrodynamics