[phys4phys] SCL online seminar: Milan Krstajic, Thursday, 28 October, 14:00

[Antun Balaz]

Dear colleagues,

You are cordially invited to the SCL online seminar of the Center for the Study of Complex Systems, which will be held on Thursday, 28 October 2021 at 14:00 on Zoom (link is given below). The talk entitled

Experimental platform for a box-trapped dipolar quantum gas

will be given by Milan Krstajić (Clarendon Laboratory, University of Oxford, UK). Abstract of the talk:

Dipolar quantum gases make up an increasingly popular branch within an already thriving field of ultracold quantum gases. The interest in such systems lies in a multitude of quantum phenomena that stem from dipole-dipole interactions, particularly from their long-range and anisotropic nature. This talk describes the design and building of an experimental platform for investigating many-body physics in homogeneous dipolar quantum gases of erbium. We will present results on the progress towards reaching the goal of an erbium Bose-Einstein condensate in an optical box potential, including the performance of laser cooling methods and the optical systems for optical trapping and transport. At present, the experiment is capable of producing clouds with 100 million atoms at the temperature of 15 microkelvin in the magneto-optical trap, which translates into about 15 million atoms at 50 microkelvin following transfer into an optical dipole trap. We will discuss details on the remaining steps to complete the platform and present an overview of the research topics our platform will make accessible, including roton physics and supersolidity, out-of-equilibrium many-body phenomena and dynamics of phase transitions in systems with long-range interactions. We will also briefly touch upon the subject of expanding the apparatus to a dual-species experiment with potassium, which will enable investigating systems with impurities. Finally, we will extend the discussion to results from numerical simulations on the stability of a purely dipolar quantum gas against collapse in a general power-law trap (of which the optical box is an example), showing that intermediate power-law traps lead to maximally homogeneous density distributions for near-critical interaction strengths.

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Time: Oct 28, 2021 14:00 Belgrade
https://us02web.zoom.us/j/89899386885?pwd=SUp0WUZLTFh2OEtiWGdDaURuL1cwZz09

Meeting ID: 898 9938 6885
Passcode: 860765
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Best regards,
Antun Balaž

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Dr. Antun Balaž
Research Professor

http://www.scl.rs/antun
Phone: +381 11 3713152
Fax: +381 11 3162190

Scientific Computing Laboratory
Center for the Study of Complex Systems

Institute of Physics Belgrade
National Institute of the Republic of Serbia
Pregrevica 118, 11080 Belgrade, Serbia
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