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.

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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 StepanenkoKCMMMG
In press Physical Review A
vortex
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.

ASAndrei StepanenkoML
Physical Review A
Image for the paper "Emergence of anyonic correlations from spin and charge dynamics in one dimension"
Condensed matter theory

Spin-charge separation

A transformation for spin and charge degrees of freedom in one-dimensional lattice systems allows direct access to the dynamical correlations.

OGOleksandr GamayunEQKBMZ
Physical Review A
Image for the paper "Tunnelling necessitates negative Wigner function"
Quantum computing

Tunnelling interpreted

Quantum tunnelling only occurs if either the Wigner function is negative, or the tunnelling rate operator has a negative Wigner function.

ODOscar DahlstenYL
Physical Review A