44 citations · 202 across the 10 of their papers we have counts for
10 papers
Ferreting out the Fluffy Bunnies: Entanglement constrained by Generalized superselection rules
Howard M. Wiseman, Stephen D. Bartlett, John A. Vaccaro
Entanglement is a resource central to quantum information (QI). In particular, entanglement shared between two distant parties allows them to do certain tasks that would otherwise…
Experimental demonstration of quantum source coding
Y. Mitsumori, J. A. Vaccaro, S. M. Barnett +4
We report an experimental demonstration of Schumacher's quantum noiseless coding theorem. Our experiment employs a sequence of single photons each of which represents three qubits.…
Observation of transient gain without population inversion in a laser-cooled rubidium lambda system
S. R. de Echaniz, Andrew D. Greentree, A. V. Durrant +3
We have observed clear Rabi oscillations of a weak probe in a strongly driven three-level lambda system in laser-cooled rubidium for the first time. When the coupling field is non-…
Observations of a doubly driven V system probed to a fourth level in laser-cooled rubidium
S. R. de Echaniz, Andrew D. Greentree, A. V. Durrant +3
Observations of a doubly driven V system probed to a fourth level in an N configuration are reported. A dressed state analysis is also presented. The expected three-peak spectrum i…
Excited stationary states of trapped Bose-Einstein condensates
John A. Vaccaro, Ole Steuernagel, Ben Lorimer
We investigate the excited stationary states of Bose-Einstein condensates trapped in harmonic potentials. We derive simple analytical approximations of the first few eigenstates of…
Prospects for photon blockade in four level systems in the N configuration with more than one atom
Andrew D. Greentree, John A. Vaccaro, Sebastian R. de Echaniz +2
We show that for appropriate choices of parameters it is possible to achieve photon blockade in idealised one, two and three atom systems. We also include realistic parameter range…