Quantum optimal control in quantum technologies. Strategic report on current status, visions and goals for research in Europe

CP Koch, U Boscain, T Calarco, G Dirr… - EPJ Quantum …, 2022 - epjqt.epj.org
Quantum optimal control, a toolbox for devising and implementing the shapes of external
fields that accomplish given tasks in the operation of a quantum device in the best way …

Dynamically corrected gates from geometric space curves

E Barnes, FA Calderon-Vargas, W Dong… - Quantum Science …, 2022 - iopscience.iop.org
Quantum information technologies demand highly accurate control over quantum systems.
Achieving this requires control techniques that perform well despite the presence of …

Robust quantum control via multipath interference for thousandfold phase amplification in a resonant atom interferometer

Y Wang, J Glick, T Deshpande, K DeRose, S Saraf… - Physical review …, 2024 - APS
We introduce a novel technique for enhancing the robustness of light-pulse atom
interferometers against the pulse infidelities that typically limit their sensitivities. The …

Doubly geometric quantum control

W Dong, F Zhuang, SE Economou, E Barnes - PRX Quantum, 2021 - APS
In holonomic quantum computation, quantum gates are performed using driving protocols
that trace out closed loops on the Bloch sphere, making them robust to certain pulse errors …

A shortcut tour of quantum control methods for modern quantum technologies

D Stefanatos, E Paspalakis - Europhysics Letters, 2021 - iopscience.iop.org
Quantum control methods, like rapid adiabatic passage, stimulated Raman adiabatic
passage, shortcuts to adiabaticity and optimal control, have become an integral part of …

Robust single-qubit gates by composite pulses in three-level systems

ZC Shi, HN Wu, LT Shen, J Song, Y ** along the geodesics
M Gong, M Yu, R Betzholz, Y Chu, P Yang, Z Wang… - Physical Review A, 2023 - APS
In a solid-state spin system, we experimentally demonstrate a protocol for quantum-state
population transfer with an improved efficiency compared to traditional stimulated Raman …

Two-photon-transition superadiabatic passage in a nitrogen-vacancy center in diamond

M Gong, M Yu, Y Chu, W Chen, Q Cao, N Wang, J Cai… - Physical Review A, 2024 - APS
Reaching a given target quantum state with high fidelity and fast operation speed close to
the quantum limit represents an important goal in quantum information science. Here we …

Optimizing quantum control pulses with complex constraints and few variables through autodifferentiation

Y Song, J Li, YJ Hai, Q Guo, XH Deng - Physical Review A, 2022 - APS
Applying optimal control algorithms on realistic quantum systems confronts two key
challenges: to efficiently adopt physical constraints in the optimization and to minimize the …

Observation of the high-order Mollow triplet by quantum mode control with concatenated continuous driving

G Wang, YX Liu, P Cappellaro - Physical Review A, 2021 - APS
The Mollow triplet is a fundamental signature of quantum optics and has been observed in
numerous quantum systems. Although it arises in the “strong driving” regime of the …