The London Institute’s papers are the official record of our discoveries. They allow others to build on and apply our work. Each one is the result of many months of research, so we strive to make them clear, inspiring and beautiful, and publish them in leading journals.

21123344
Quantum physics

Multi-path transfer

Simultaneous propagation along multiple paths speeds excitation transfer in long-range lattices, proving an evident quantum advantage.

ASAndrei StepanenkoKCMG
Submitted
31231223123
Quantum physics

Towards optimal control

Time-optimal control of large quantum systems is computed efficiently by applying boundary conditions to a brachistochrone–Lax framework.

ASAndrei StepanenkoKCMG
Submitted
asrt
Quantum optimal control

Optimal transfer

We use the quantum brachistochrone method to design an optimal control strategy for the fastest quantum state transfer in long qubit chains.

ASAndrei StepanenkoKCMG
Physical Review Letters
asrt
Quantum optimal control

Three-qubit shortcut

We achieve maximal-fidelity state transfer in the fastest possible time for a 3-qubit chain by applying the quantum variational method.

ASAndrei StepanenkoKCMG
Optical Materials Express
QUANTUM GASES

Vortex bound states

Modelling the behaviour of two interacting bosonic particles in a chiral, dimerized optical lattice shows the pair form a vortex bound state.

ASML
Physical Review A