Simon A. Haine

TL;DR: It is demonstrated that pumped-up SU(1,1) interferometry schemes are capable of surpassing the shot-noise limit with respect to the total number of input particles and are never worse than conventional SU( 1,1), while continuing to excel in the presence of particle losses, poor particle-resolution detection, and noise on the relative phase difference between the two side modes.

TL;DR: It is proved that one has great flexibility in constructing an optimal protocol, thereby allowing it to also be robust to detection noise, and it is determined that optimal and robust quantum metrology is achievable in current spin-squeezing experiments.

TL;DR: In this paper, a ring trap for Bose-Einstein condensates using rapidly scanned time-averaged dipole potentials is presented, with a diameter of up to 300 μm.

TL;DR: In this article, the authors observed the formation of shock waves in a Bose-Einstein condensate containing a large number of sodium atoms and modeled them using an effective one-dimensional Gross-Pitaevskii-like equation.

TL;DR: In this paper, a ring trap for Bose-Einstein condensates using rapidly scanned time-averaged dipole potentials is presented, which is smoothed by using the atom distribution as an optical intensity correction algorithm.