| AVS 66th International Symposium & Exhibition | |
| Materials and Processes for Quantum Information, Computing and Science Focus Topic | Tuesday Sessions |
| Session QS-TuM |
| Session: | AVS Quantum Science (ALL INVITED SESSION) |
| Presenter: | Halina Rubinsztein-Dunlop, University of Queensland, Australia |
| Authors: | H. Rubinsztein-Dunlop, University of Queensland, Australia T. Neely, University of Queensland, Australia G. Gauthier, University of Queensland, Australia T. Bell, University of Queensland, Australia A. Pritchard, University of Queensland, Australia K. Goddard-Lee, University of Queensland, Australia A. Stilgo, University of Queensland, Australia I. Favre-Bulle, University of Queensland, Australia S. Zhang, University of Queensland, Australia T. Nieminen, University of Queensland, Australia I. Lenton, University of Queensland, Australia |
| Correspondent: | Click to Email |
Spatial light modulators (SLM) or Digital Micromirror Devices (DMD) give us a great flexibility in sculpting light. What is means is that we have perfect tools that can be used for production of configurable and flexible confining potentials and utilise them to confine atoms as well as lager scale objects and conduct novel experiments outlining light –matter interaction in these systems. In general, we divide the techniques that are used to sculpt light to those based on time average methods and those utilising SLMs in either Fourier plane or direct imaging plane. A Gaussian beam can be modulated using two-axis acousto-optic modulator (AOM) to create highly configurable time‐averaged traps. SLMs in Fourier plane control the phase and /or amplitude of an input Gaussian beam, with the pattern representing the spatial Fourier transform of the desired amplitude pattern. The optical system then focuses this sculpted light pattern to the plane containing the system of interests, performing a Fourier transform and recovering the desired pattern. The optical system then focuses this sculpted light pattern to the plane containing the system of interests, performing a Fourier transform and recovering the desired pattern. DMD can configure the amplitude of an input beam either in the Fourier plane or in a direct imaging configuration. Sculptured light produced using these methods promises high flexibility and an opportunity for trapping and driving systems ranging from studies of quantum thermodynamics using ultra cold atoms to trapping and manipulating nano and micron‐size objects or even making measurements in-vivo inside a biological cell.
In this talk, I will present techniques and results that open up new avenues for the study of quantum fluids, be it by providing a concise atomtronic model for predicting superfluid transport or expanding the accessible parameters space available to fundamental studies of turbulence. The results from our studies of Onsager vortices will be also presented. The realization of negative temperature vortex distributions, long predicted by Onsager, open up the experimental study of the full phase‐diagram of 2D vortex matter.
Finally I will demonstrate how carefully sculpted light can be used in microsystems including microthermodynamics and heat engines at that scale.