10 citations · 46 across the 14 of their papers we have counts for
14 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…
Robust Quantum Control in Closed and Open Systems: Theory and Practice
C. A. Weidner, E. A. Reed, J. Monroe +6
Robust control of quantum systems is an increasingly relevant field of study amidst the second quantum revolution, but there remains a gap between taming quantum physics and robust…
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…
Disturbance-agnostic robust performance with structured uncertainties and initial state error in classical versus quantum oscillatory systems
Edmond Jonckheere, Sophie G. Schirmer, Frank C. Langbein +2
A method to quantify robust performance for situations where structured parameter variations and initial state errors rather than extraneous disturbances are the main performance l…
Analyzing and Unifying Robustness Measures for Excitation Transfer Control in Spin Networks
S. P. O'Neil, I. Khalid, A. A. Rompokos +4
Recent achievements in quantum control have resulted in advanced techniques for designing controllers for applications in quantum communication, computing, and sensing. However, th…
Robustness of Energy Landscape Control to Dephasing
Sean Patrick O'Neil, Frank C. Langbein, Edmond Jonckheere +1
As shown in previous work, in some cases closed quantum systems exhibit a non-conventional trade-off in performance and robustness in the sense that controllers with the highest fi…
Robustness of Energy Landscape Controllers for Spin Rings under Coherent Excitation Transport
Sean O'Neil, Frank Langbein, Edmond Jonckheere +1
The design and analysis of controllers to regulate excitation transport in quantum spin rings presents challenges in the application of classical feedback control techniques to syn…
Time Domain Sensitivity of the Tracking Error
S. O'Neil, S. G. Schirmer, F. C. Langbein +2
A strictly time-domain formulation of the log-sensitivity of the error signal to structured plant uncertainty is presented and analyzed through simple but representative classical…
Robustness of energy landscape control for spin networks under decoherence
S. Schirmer, E. Jonckheere, S. O'Neil +1
Quantum spin networks form a generic system to describe a range of quantum devices for quantum information processing and sensing applications. Understanding how to control them is…
Sensitivity and Robustness of Quantum Spin-1/2 Rings to Parameter Uncertainty
Sean O'Neil, Edmond Jonckheere, Sophie Schirmer +1
Selective transfer of information between spin-1/2 particles arranged in a ring is achieved by optimizing the transfer fidelity over a readout time window via shaping, externally a…