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Reconfigurable single-atom array for Rydberg atom quantum simulation

Wednesday, April 11, 2018
2:30 PM - 3:30 PM
Location: Lauritsen 469
Hyosub Kim, Department of Physics, KAIST, South Korea

Abstract: Recently realized single-atom array synthesizers have drawn much attention because defect-free single-atom array suitable for spin-lattice quantum simulation can be quickly formed [1]. Subsequently, their capabilities as Rydberg quantum simulators have been demonstrated as well [2]. In this talk, I will introduce our results on the array synthesizer and proof-of-principle quantum simulation thereof:
1) In the first part, I will report on how defect-free single-atom array could be prepared by using a liquid-crystal spatial light modulator. Further performance improvement for speed, scale, and dimension will be discussed as well.
2) In the second part, an experimental result on thermalization dynamics of Ising-like spin-1/2 chain will be presented; the microscopic principle of the thermalization (detailed balance between spin-flip) was observed. It is worth noting that this thermalization scenario is a natural consequence of mere Schroedinger equation, rather than a result of an assumption such as connection to a thermal bath. Also, I will discuss about extending the thermalization scenario to a larger chain and higher dimensions.

[1] H. Kim, et al., "In situ single-atom array synthesis using dynamic holographic optical tweezers," Nature Communications 7, 13317 (2016);
M. Endres, et al., "Atom-by-atom assembly of defect-free one-dimensional cold atom arrays," Science 354, 1024-1027 (2016); D. Barredo, et al., "An atom-by-atom assembler of defect-free arbitrary two-dimensional atomic arrays," Science 354, 1021-1023 (2016).
[2] H. Kim, et al., "Detailed Balance of Thermalization dynamics in Rydberg atom quantum simulators,"
arXiv:1712.02065 (2017);

H. Bernien, et al., "Probing many-body dynamics on a 51-atom quantum simulator," Nature 551, 579 (2017);
V. Lienhard, et al., "Observing the space- and time-dependent growth of correlations in dynamically tuned
synthetic Ising antiferromagnets," arXiv:1711.01185 (2017).
 

 

Series: IQIM Postdoctoral and Graduate Student Seminar Series
For more information, please phone 626-395-4013 or email marciab@caltech.edu

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