26 citations · 137 across the 21 of their papers we have counts for
22 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…
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…
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…
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…
The impact of an interactive visualization and simulation tool on learning quantum physics: Results of an eye-tracking study
Stefan Küchemann, Malte Ubben, David Dzsotjan +6
Employing scientific practices to obtain and use information is one of the central facets of next generation science standards. Especially in quantum technology education, the abil…
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…
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…
Quantum Games and Interactive Tools for Quantum Technologies Outreach and Education
Zeki C. Seskir, Piotr Migdał, Carrie Weidner +21
In this article, we provide an extensive overview of a wide range of quantum games and interactive tools that have been employed by the community in recent years. The paper present…
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…
Dynamical uncertainty propagation with noisy quantum parameters
Mogens Dalgaard, Carrie A. Weidner, Felix Motzoi
Many quantum technologies rely on high-precision dynamics, which raises the question of how these are influenced by the experimental uncertainties that are always present in real-l…
Anyon braiding on a fractal lattice with a local Hamiltonian
Sourav Manna, Callum W. Duncan, Carrie A. Weidner +2
There is a growing interest in searching for topology in fractal dimensions with the aim of finding different properties and advantages compared to the integer dimensional case. It…
SciNote: Collaborative Problem Solving and Argumentation Tool
Janet Rafner, Arthur Hjorth, Carrie Weidner +4
As educators push for students to learn science by doing science, there is a need for computational scaffolding to assist students' evaluation of scientific evidence and argument b…
Student use of a quantum simulation and visualization tool
Shaeema Zaman Ahmed, Carrie A. Weidner, Jesper H. M. Jensen +2
Knowledge of quantum mechanical systems is becoming more important for many science and engineering students who are looking to join the emerging quantum workforce. To better prepa…
A training programme for early-stage researchers that focuses on developing personal science outreach portfolios
Shaeema Zaman Ahmed, Arthur Hjorth, Janet Frances Rafner +6
Development of outreach skills is critical for researchers when communicating their work to non-expert audiences. However, due to the lack of formal training, researchers are typic…
Remote multi-user control of the production of Bose-Einstein condensates for research and education
J S Laustsen, R Heck, O Elíasson +3
Remote control of experimental systems allows for improved collaboration between research groups as well as unique remote educational opportunities accessible by students and citiz…
Robust Control Performance for Open Quantum Systems
Sophie G. Schirmer, Frank C. Langbein, Carrie A. Weidner +1
Robust performance of control schemes for open quantum systems is investigated under classical uncertainties in the generators of the dynamics and nonclassical uncertainties due to…
Quantum Composer: A programmable quantum visualization and simulation tool for education and research
Shaeema Zaman Ahmed, Jesper Hasseriis Mohr Jensen, Carrie Ann Weidner +3
Making quantum mechanical equations and concepts come to life through interactive simulation and visualization are commonplace for augmenting learning and teaching. However, graphi…
Crowdsourcing human common sense for quantum control
Jesper Hasseriis Mohr Jensen, Miroslav Gajdacz, Shaeema Zaman Ahmed +6
Citizen science methodologies have over the past decade been applied with great success to help solve highly complex numerical challenges. Here, we take early steps in the quantum…
Spatial tomography of individual atoms in a quantum gas microscope
Ottó Elíasson, Jens S. Laustsen, Robert Heck +4
We demonstrate a method to determine the position of single atoms in a three-dimensional optical lattice. Atoms are sparsely loaded from a far-off-resonant optical tweezer into a f…