We simulate the preparation of a superposition of vortex states in a Bose-Einstein condensate trapped in a ring geometry. It has been proposed that a vortex-antivortex superposition can be used as an inertial sensor, e.g. to measure rotations, or as a magnetic field sensors [1,2]. In both cases, the external influence causes a precession of the BEC standing wave, which can be measured...
Variational quantum algorithms aim at harnessing the power of noisy intermediate-scale quantum computers, by using a classical optimizer to train a parameterized quantum circuit to solve tractable quantum problems. The variational quantum eigensolver is one of the aforementioned algorithms designed to determine the ground-state of many-body Hamiltonians. Here, we apply the variational quantum...
Ensembles of Rydberg atoms, in the Electromagnetic Induced Transparency
setup, have proved to be a possible route to obtain photon-photon
nonlinear interaction. Thanks to the Rydberg blockade
mechanism, a single
photon is indeed able to saturate the atomic
response of a considerably large portion of the
ensemble, that appears opaque to a second
incoming one. While the continuous wave...
