115 citations · 578 across the 16 of their papers we have counts for
16 papers
Bounded fuzzy logic control for optimal scheduling of green hydrogen production and revenue maximisation
Sleiman Farah, Jens Jakob Sørensen, Kary Främling +1
Hydrogen Purchase Agreements (HPAs) guarantee revenue streams that mitigate the financial risks inherent in the long-term production of green hydrogen from renewable energy sources…
Achieving fast high-fidelity optimal control of many-body quantum dynamics
Jesper Hasseriis Mohr Jensen, Frederik Skovbo Møller, Jens Jakob Sørensen +1
We demonstrate the efficiency of a recent exact-gradient optimal control methodology by applying it to a challenging many-body problem, crossing the superfluid to Mott-insulator ph…
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…
Approximate Dynamics Lead to More Optimal Control: Efficient Exact Derivatives
Jesper Hasseriis Mohr Jensen, Frederik Skovbo Møller, Jens Jakob Sørensen +1
Accurate derivatives are important for efficiently locally traversing and converging in quantum optimization landscapes. By deriving analytically exact control derivatives (gradien…
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…
Optimization of Pulses with Low Bandwidth for Improved Excitation of Multiple-Quantum Coherences in NMR of Quadrupolar Nuclei
Jens Jakob Sørensen, Jacob Søgaard Nyemann, Felix Motzoi +2
We discuss the commonly encountered problem when optimizing NMR pulses using optimal control that the otherwise very precise NMR theory does not provide as excellent agreement with…
Time-Optimal Control of Collisional Gates in Ultracold Atomic Systems
Jesper Hasseriis Mohr Jensen, Jens Jakob Sørensen, Klaus Mølmer +1
We use quantum optimal control to identify fast collision-based two-qubit gates in ultracold atoms. We show that a significant speed up can be achieved by opti…
Global optimization of quantum dynamics with AlphaZero deep exploration
Mogens Dalgaard, Felix Motzoi, Jens Jakob Sorensen +1
While a large number of algorithms for optimizing quantum dynamics for different objectives have been developed, a common limitation is the reliance on good initial guesses, being…
QEngine: An open-source C++ Library for Quantum Optimal Control of Ultracold Atoms
Jens Jakob Sørensen, Jesper Jensen, Till Heinzel +1
We present the first version of the QEngine, an open-source C++ library for simulating and controlling ultracold quantum systems using optimal control theory (OCT). The most notabl…
Quantum Control with Measurements and Quantum Zeno Dynamics
Jens Jakob Sørensen, Mogens Dalgaard, Alexander Holm Kiilerich +2
We introduce an efficient iterative method to prepare a target state in Hilbert spaces with high dimensionality using a combination of unitary evolution, measurements, and quantum…
Approaching the Quantum Speed Limit with Global-Local Optimization
Jens Jakob Sørensen, Mikel Aranburu, Till Heinzel +1
We propose a Global-Local optimization algorithm for quantum control that combines standard local search methodologies with evolutionary algorithms. This allows us to find faster s…
Quantum Optimal Control in a Chopped Basis: Applications in Control of Bose-Einstein Condensates
Jens Jakob Sørensen, Mikel Aranburu, Till Heinzel +1
We discuss quantum optimal control of Bose-Einstein condensates trapped in magnetic microtraps. The objective is to transfer a condensate from the ground state to the first-excited…
Fast state transfer in a Λ-system: a shortcut-to-adiabaticity approach to robust and resource optimized control
Henrik Lund Mortensen, Jens Jakob W. H. Sørensen, Klaus Mølmer +1
We propose an efficient strategy to find optimal control functions for state-to-state quantum control problems. Our procedure first chooses an input state trajectory, that can real…
Remote optimization of an ultra-cold atoms experiment by experts and citizen scientists
Robert Heck, Oana Vuculescu, Jens Jakob Sørensen +17
We introduce a novel remote interface to control and optimize the experimental production of Bose-Einstein condensates (BECs) and find improved solutions using two distinct impleme…
Exploring the Quantum Speed Limit with Computer Games
Jens Jakob W. H. Sørensen, Mads Kock Pedersen, Michael Munch +9
Humans routinely solve problems of immense computational complexity by intuitively forming simple, low-dimensional heuristic strategies. Citizen science exploits this ability by pr…
Many-body state engineering using measurements and fixed unitary dynamics
Mads Kock Pedersen, Jens Jakob W. H. Sørensen, Malte C. Tichy +1
We develop a scheme to prepare a desired state or subspace in high-dimensional Hilbert-spaces using repeated applications of a single static projection operator onto the desired ta…