32 citations · 95 across the 8 of their papers we have counts for
8 papers
Steady-state Bell nonlocality in an autonomous quantum thermal machine
Bradley Longstaff
A quantum thermal machine is presented that is able to autonomously generate steady-state Bell nonlocality. A Lindblad equation is derived for two qubits that are incoherently coup…
Impossibility of bosonic autonomous entanglement engines in the weak-coupling limit
Bradley Longstaff, Michael G. Jabbour, Jonatan Bohr Brask
Entanglement is a fundamental feature of quantum physics and a key resource for quantum communication, computing and sensing. Entangled states are fragile and maintaining coherence…
Persistent nonlocality in an ultracold-atom environment
Bradley Longstaff, Jonatan Bohr Brask
We investigate nonlocal quantum correlations arising between multiple two-level impurity atoms coupled to an ultracold bosonic gas. We find that the environment-induced dynamics of…
Steering-based randomness certification with squeezed states and homodyne measurements
Marie Ioannou, Bradley Longstaff, Mikkel V. Larsen +5
We present a scheme for quantum randomness certification based on quantum steering. The protocol is one-sided device independent, providing high security, but requires only states…
Bloch oscillations in a Bose-Hubbard chain with single-particle losses
Bradley Longstaff, Eva-Maria Graefe
We theoretically investigate Bloch oscillations in a one-dimensional Bose-Hubbard chain, with single-particle losses from the odd lattice sites described by the Lindblad equation.…
Evolution speed of open quantum dynamics
Dorje C Brody, Bradley Longstaff
The space of density matrices is embedded in a Euclidean space to deduce the dynamical equation satisfied by the state of an open quantum system. The Euclidean norm is used to obta…