Pareto-optimal cycles for power, efficiency and fluctuations of quantum heat engines using reinforcement learning

PA Erdman, A Rolandi, P Abiuso… - Physical Review …, 2023 - APS
The full optimization of a quantum heat engine requires operating at high power, high
efficiency, and high stability (ie, low power fluctuations). However, these three objectives …

Universally robust quantum control

PM Poggi, G De Chiara, S Campbell, A Kiely - Physical Review Letters, 2024 - APS
We study the robustness of the evolution of a quantum system against small uncontrolled
variations in parameters in the Hamiltonian. We show that the fidelity susceptibility, which …

Quantum optimal control: Practical aspects and diverse methods

TS Mahesh, P Batra, MH Ram - Journal of the Indian Institute of Science, 2023 - Springer
Quantum controls realize the unitary or nonunitary operations employed in quantum
computers, quantum simulators, quantum communications, and other quantum information …

Intrinsic decoherence effects on correlated coherence and quantum discord in XXZ Heisenberg model

Z Dahbi, M Oumennana, M Mansour - Optical and Quantum Electronics, 2023 - Springer
Spin qubits are at the heart of technological advances in quantum processors and offer an
excellent framework for quantum information processing. This work characterizes the time …

Efficiency optimization in quantum computing: balancing thermodynamics and computational performance

T Śmierzchalski, Z Mzaouali, S Deffner, B Gardas - Scientific Reports, 2024 - nature.com
We investigate the computational efficiency and thermodynamic cost of the D-Wave
quantum annealer under reverse-annealing with and without pausing. Our demonstration on …

Inverse engineering for robust state transport along a spin chain via low-energy subspaces

Y Ji, Z Wu, R Liu, Y Li, F Jin, H Zhou… - New Journal of …, 2024 - iopscience.iop.org
Quantum state transfer (QST) plays a central role in the field of quantum computation and
communication, but its quality will be deteriorated by the ubiquitous variations and noise in …

Counterdiabatic, Better, Faster, Stronger: Optimal control for approximate counterdiabatic driving

I Čepaitė - arXiv preprint arXiv:2403.20267, 2024 - arxiv.org
Adiabatic protocols are employed across a variety of quantum technologies, from
implementing state preparation and individual operations that are building blocks of larger …

Differentiable master equation solver for quantum device characterisation

DL Craig, N Ares, EM Gauger - arXiv preprint arXiv:2403.04678, 2024 - arxiv.org
Differentiable models of physical systems provide a powerful platform for gradient-based
algorithms, with particular impact on parameter estimation and optimal control. Quantum …

Balancing Thermodynamics and Computational Performance

T Smierzchalsk, Z Mzaouali, S Deffner - UMBC Faculty Collection - mdsoar.org
We investigate the computational efficiency and thermodynamic cost of the D-Wave
quantum annealer under reverse-annealing with and without pausing. Our experimental …

Inference of transport phenomena in quantum devices

D Craig - 2023 - ora.ox.ac.uk
This thesis is concerned with charge transport in electrostatically defined quantum dot
devices. Such devices display a wide range of transport phenomena in both open and …