17 citations · 68 across the 12 of their papers we have counts for
11 papers · 1 filter
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…
Sample-efficient Model-based Reinforcement Learning for Quantum Control
Irtaza Khalid, Carrie A. Weidner, Edmond A. Jonckheere +2
We propose a model-based reinforcement learning (RL) approach for noisy time-dependent gate optimization with improved sample complexity over model-free RL. Sample complexity is th…
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…
Applying classical control techniques to quantum systems: entanglement versus stability margin and other limitations
C. A. Weidner, S. G. Schirmer, F. C. Langbein +1
Development of robust quantum control has been challenging and there are numerous obstacles to applying classical robust control to quantum system including bilinearity, marginal s…
Statistically Characterising Robustness and Fidelity of Quantum Controls and Quantum Control Algorithms
Irtaza Khalid, Carrie A. Weidner, Edmond A. Jonckheere +2
Robustness of quantum operations or controls is important to build reliable quantum devices. The robustness-infidelity measure (RIM) is introduced to statistically quantify the…
Robustness of Quantum Systems Subject to Decoherence: Structured Singular Value Analysis?
S G Schirmer, F C Langbein, C A Weidner +1
We study the problem of robust performance of quantum systems under structured uncertainties. A specific feature of closed (Hamiltonian) quantum systems is that their poles lie on…
Reinforcement Learning vs. Gradient-Based Optimisation for Robust Energy Landscape Control of Spin-1/2 Quantum Networks
I. Khalid, C. A. Weidner, E. A. Jonckheere +2
We explore the use of policy gradient methods in reinforcement learning for quantum control via energy landscape shaping of XX-Heisenberg spin chains in a model agnostic fashion. T…
Control-Induced Decoherence-Free Manifolds
E. Jonckheere, A. Shabani, A. T. Rezakhani
Quantum coherence of open quantum systems is usually compromised because of the interaction with the ambient environment. A "decoherence-free subspace" (DFS) of the system Hilbert…