436 citations · 750 across the 16 of their papers we have counts for
16 papers
Quantum behaviour of pumped and damped triangular Bose Hubbard systems
C. V. Chianca, M. K. Olsen
We propose and analyse analogs of optical cavities for atoms using three-well Bose-Hubbard models with pumping and losses. We consider triangular configurations. With one well pump…
Finite-time Lyapunov exponents in chaotic Bose-Hubbard chains
R. A. Kidd, M. K. Olsen, J. F. Corney
Many-site Bose-Hubbard lattices display complex semiclassical dynamics, with both chaotic and regular features. We have characterised chaos in the semiclassical dynamics of short B…
Controlled asymmetry of EPR steering with an injected non-degenerate optical parametric oscillator
M. K. Olsen
We propose and analyse a nonlinear optical apparatus in which the direction of asymmetric steering is controllable within the apparatus, rather than by adding noise to measurements…
Quantum behaviour of open pumped and damped Bose-Hubbard trimers
C. V. Chianca, M. K. Olsen
We propose and analyse analogs of optical cavities for atoms using three-well inline Bose-Hubbard models with pumping and losses. With one well pumped and one damped, we find that…
Correspondence on "Single-shot simulations of dynamic quantum many-body systems"
M. K. Olsen, J. F. Corney, R. J. Lewis-Swan +1
Comment on a letter to Nature Physics, where Sakmann and Kasevich claim to solve the many-body time dependent Schrödinger equation to simulate single experimental runs of interacti…
Approximate particle number distribution from direct stochastic sampling of the Wigner function
R. J. Lewis-Swan, M. K. Olsen, K. V. Kheruntsyan
We consider the Wigner quasi-probability distribution function of a single mode of an electromagnetic or matter-wave field to address the question of whether a direct stochastic sa…
The versatility of continuous-variable asymmetric tripartite entanglement allows Alice and Clare to keep secrets from Bob
M. K. Olsen, E. G. Cavalcanti
The fully symmetric Gaussian tripartite entangled pure states will not exhibit two-mode Einstein Podolsky-Rosen (EPR)-steering. This means that any two participants cannot share qu…
Correspondence between stochastic Wigner trajectories and individual experimental runs
R. J. Lewis-Swan, M. K. Olsen, K. V. Kheruntsyan
We examine the interpretation of individual phase-space trajectories of the Wigner function as corresponding to possible outcomes of single experimental trials. To this end, we inv…
Non-Gaussian pure states and positive Wigner functions
J. F. Corney, M. K. Olsen
Non-Gaussian correlations in a pure state are inextricably linked with non-classical features, such as a non positive-definite Wigner function. In a commonly used simulation techni…
Asymmetric Gaussian harmonic steering in second harmonic generation
M. K. Olsen
Intracavity second harmonic generation is one of the simplest of the quantum optical processes and is well within the expertise of most optical laboratories. It is well understood…
Non-Gaussian continuous-variable entanglement and steering
M. K. Olsen, J. F. Corney
Two Kerr-squeezed optical beams can be combined in a beamsplitter to produce non-Gaussian continuous-variable entangled states. We characterize the non-Gaussian nature of the outpu…
Analysis of a continuous-variable quadripartite cluster state from a single optical parametric oscillator
S. L. W. Midgley, A. S. Bradley, O. Pfister +1
We examine the feasibility of generating continuous-variable multipartite entanglement in an intra-cavity quadruply concurrent downconversion scheme that has been proposed for the…
Commuting Heisenberg operators as the quantum response problem: Time-normal averages in the truncated Wigner representation
B. Berg, L. I. Plimak, A. Polkovnikov +3
The applicability of the so-called truncated Wigner approximation (-W) is extended to multitime averages of Heisenberg field operators. This task splits naturally in two. Firstly,…
Pairing mean-field theory for the dynamics of dissociation of molecular Bose-Einstein condensates
M. J. Davis, S. J. Thwaite, M. K. Olsen +1
We develop a pairing mean-field theory to describe the quantum dynamics of the dissociation of molecular Bose-Einstein condensates into their constituent bosonic or fermionic atoms…
Beyond the Fokker-Planck equation: Stochastic Simulation of Complete Wigner representation for the Optical Parametric Oscillator
L. I. Plimak, M. K. Olsen, M. Fleischhauer +1
We demonstrate a method which allows the stochastic modelling of quantum systems for which the generalised Fokker-Planck equation in the phase space contains derivatives of higher…
Dynamical quantum noise in Bose-Einstein condensates
M. J. Steel, M. K. Olsen, L. I. Plimak +5
We introduce the study of dynamical quantum noise in Bose-Einstein condensates through numerical simulation of stochastic partial differential equations obtained using phase space…