6 papers
Fidelity-Based Robustness Margins for Finite-Time Quantum Control
S. P. O'Neil, F. C. Langbein, C. A. Weidner +2
We develop a structure-specific fidelity-threshold robustness margin for finite-dimensional closed quantum systems under piecewise-constant coherent control. A scalar physical para…
Robustness Analysis for Quantum Systems Controlled by Continuous-Time Pulses
Sean Patrick O'Neil, Edmond Jonckheere, Sophie Schirmer
Differential sensitivity techniques originally developed to study the robustness of energy landscape controllers are generalized to the important case of closed quantum systems sub…
Energy Landscape Shaping for Robust Control of Atoms in Optical Lattices
C. A. Weidner, S. P. O'Neil, E. A. Jonckheere +2
Robust quantum control is crucial for realizing practical quantum technologies. Energy landscape shaping offers an alternative to conventional dynamic control, providing theoretica…
Geometric Interpretation of Sensitivity to Structured Uncertainties in Spintronic Networks
Sean Patrick O'Neil, Edmond Jonckheere, Sophie Schirmer
We present a geometric model of the differential sensitivity of the fidelity error for state transfer in a spintronic network based on the relationship between a set of matrix oper…
Robustness of Dynamic Quantum Control: Differential Sensitivity Bound
S. P. O'Neil, C. A. Weidner, E. A. Jonckheere +2
Dynamic control via optimized, piecewise-constant pulses is a common paradigm for open-loop control to implement quantum gates. While numerous methods exist for the synthesis of su…
Sensitivity Bounds for Quantum Control and Time-Domain Performance Guarantees
Sean Patrick O'Neil, Edmond Jonckheere, Sophie Schirmer
Control of quantum systems via time-varying external fields optimized to maximize a fidelity measure at a given time is a mainstay in modern quantum control. However, save for spec…