6 papers
Variational quantum algorithm with information sharing
Chris N. Self, Kiran E. Khosla, Alistair W. R. Smith +5
We introduce an optimisation method for variational quantum algorithms and experimentally demonstrate a 100-fold improvement in efficiency compared to naive implementations. The ef…
FLIP: A flexible initializer for arbitrarily-sized parametrized quantum circuits
Frederic Sauvage, Sukin Sim, Alexander A. Kunitsa +3
When compared to fault-tolerant quantum computational strategies, variational quantum algorithms stand as one of the candidates with the potential of achieving quantum advantage fo…
Efficient Assessment of Process Fidelity
Sean Greenaway, Frédéric Sauvage, Kiran E. Khosla +1
The accurate implementation of quantum gates is essential for the realisation of quantum algorithms and digital quantum simulations. This accuracy may be increased on noisy hardwar…
Phase diagram and optimal control for n-tupling discrete time crystal
Arkadiusz Kuroś, Rick Mukherjee, Weronika Golletz +4
A remarkable consequence of spontaneously breaking the time translational symmetry in a system, is the emergence of time crystals. In periodically driven systems, discrete time cry…
Preparation of ordered states in ultra-cold gases using Bayesian optimization
Rick Mukherjee, Frederic Sauvage, Harry Xie +2
Ultra-cold atomic gases are unique in terms of the degree of controllability, both for internal and external degrees of freedom. This makes it possible to use them for the study of…
Optimal quantum control with poor statistics
Frederic Sauvage, Florian Mintert
Control of quantum systems is a central element of high-precision experiments and the development of quantum technological applications. Control pulses that are typically temporall…