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| PhD Fellowship in Ab initio simulations of ultradilute quantum gases and liquids | Closing date: 2023-01-25
Contact: La Caixa Fellowships |
| The research project aims at providing an accurate ab initio description by means of state-of-the-art Montecarlo and Tensor networks tools, combined with analytical tools and exact diagonalization calculations. The ICCUB group has ample experience in using tensor networks, exact diagonalization and analytical tools. The project will be cosupervised by Prof. Astrakharchik, a long-term collaborator of the group, currently on a one-year stay in the group, who is a world expert in Monte Carlo methods applied to many-body quantum systems. | | ▸ more | Research Project:
We are currently entering the so-called second quantum revolution, where the high control of nature at the smallest scales is allowing us to build a fantastic set of new technology based on quantum mechanics. Among the many open fronts, a fascinating one is the possibility of producing human taylor made new materials with exoctic quantum properties, e.g. new superfluids.
There is important experimental progress in the field of ultradilute quantum gases in the last few years, in particular, in the realization of ultradilute quantum liquids and dipolar gases. Ultracold atomic systems are a perfect testbed for quantum theories for three main reasons:
(i) They are extremely pure and defect free
(ii) They are highly controllable in terms of the interactions between atoms
(iii) The trapping potentials can be custom made, i.e. lattices, 1D systems, etc.
Recently, quantum ultradilute liquids have been experimentally created in the experimental group of Prof. Tarruell at ICFO (Spain) [1], featuring densities that are eight orders of magnitude more dilute as compared to the usual ones. Such many-body systems are self-bound, akin to liquid drops or nuclei. It is of great interest to study their properties and to predict the possible existence of such ultradilute liquids in other systems, i.e. in lattice-trapped atoms [2,3]. In another important recent experiment in the group of Prof. Lev (Stanford), a topological pumping mechanism has been experimentally produced in dysprosium gases trapped in 1D systems [4]. Interestingly, in this case, the atoms feature long-range dipolar interactions, opening the possibility of building quantum simulators of materials featuring exotic quantum phases.
[1] C. R. Cabrera, et al., Science 359, 301 (2018).
[2] I Morera, et al., Phys. Rev. Res. 2 (2), 022008 (2020).
[3] I Morera, et al., Phys. Rev. Letts. 126 (2), 023001 (2021).
[4] Wil Kao, et al., Science 371, 296 (2021).
Job position description
The research project aims at providing an accurate ab initio description by means of state-of-the-art Montecarlo and Tensor networks tools, combined with analytical tools and exact diagonalization calculations. The ICCUB group has ample experience in using tensor networks, exact diagonalization and analytical tools. The project will be cosupervised by Prof. Astrakharchik, a long-term collaborator of the group, currently on a one-year stay in the group, who is a world expert in Monte Carlo methods applied to many-body quantum systems. The research group is currently composed of five senior members, three visiting professors, one postdoc, and two PhD students.
The main objectives of this work are:
? Theoretically study the physical properties of state-of-the-art exotic quantum fluids produced in ultracold atomic laboratories worldwide.
? Learn and apply the Tensor networks and Montecarlo techniques to study many-body quantum systems, in particular exotic quantum liquids and low-dimensional quantum many-body systems.
The fellow will join the Quantum Technologies area of the ICCUB and will participate actively in our Quantum Technologies meetings and seminars. The student will join our network of international collaborators.
During the PhD period, the student will participate in Schools and Workshops to strengthen his/her background, and will be encouraged to present the results of the research at international conferences. The fellow is expected to learn: i) Performing theoretical and computational high-quality research; ii) Participating in the preparation of manuscripts for publication and presentations at scientific conferences.
More information:
Group leader
Prof. Bruno Julia Diaz ?brunojulia @ ub.edu
Research product / Research group
Many-body quantum physics group
manboqu.fqa.ub.edu
https://icc.ub.edu/node/21451
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