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用于超冷原子安德森局域化的双色态依赖无序势

Bichromatic state-dependent disordered potential for Anderson localization of ultracold atoms.

作者信息

Lecoutre Baptiste, Guo Yukun, Yu Xudong, Niranjan M, Mukhtar Musawwadah, Volchkov Valentin V, Aspect Alain, Josse Vincent

机构信息

Université Paris-Saclay, Institut d'Optique Graduate School, CNRS, Laboratoire Charles Fabry, 91127 Palaiseau, France.

出版信息

Eur Phys J D At Mol Opt Phys. 2022;76(11):218. doi: 10.1140/epjd/s10053-022-00549-6. Epub 2022 Nov 17.

DOI:10.1140/epjd/s10053-022-00549-6
PMID:36588589
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9799246/
Abstract

ABSTRACT

The ability to load ultracold atoms at a well-defined energy in a disordered potential is a crucial tool to study quantum transport, and in particular Anderson localization. In this paper, we present a new method for achieving that goal by rf transfer of atoms in an atomic Bose-Einstein condensate from a disorder-insensitive state to a disorder-sensitive state. It is based on a bichromatic laser speckle pattern, produced by two lasers whose frequencies are chosen so that their light-shifts cancel each other in the first state and add up in the second state. Moreover, the spontaneous scattering rate in the disorder-sensitive state is low enough to allow for long observation times of quantum transport in that state. We theoretically and experimentally study the characteristics of the resulting potential.

摘要

摘要

在无序势场中以明确的能量加载超冷原子的能力是研究量子输运，特别是安德森局域化的关键工具。在本文中，我们提出了一种通过射频转移原子玻色 - 爱因斯坦凝聚体中的原子，使其从无序不敏感态转变为无序敏感态来实现该目标的新方法。它基于双色激光散斑图案，由两台激光器产生，所选频率使得它们的光频移在第一种状态下相互抵消，而在第二种状态下相加。此外，无序敏感态下的自发散射率足够低，以便能够在该状态下对量子输运进行长时间观测。我们从理论和实验上研究了所得势场的特性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9364/9799246/4c4508dcf17b/10053_2022_549_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9364/9799246/c9559f0f9109/10053_2022_549_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9364/9799246/657ef083d6ae/10053_2022_549_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9364/9799246/cdfa88b75cce/10053_2022_549_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9364/9799246/24c18b322fc3/10053_2022_549_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9364/9799246/02285eb6498e/10053_2022_549_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9364/9799246/18049384558f/10053_2022_549_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9364/9799246/4c4508dcf17b/10053_2022_549_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9364/9799246/c9559f0f9109/10053_2022_549_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9364/9799246/657ef083d6ae/10053_2022_549_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9364/9799246/cdfa88b75cce/10053_2022_549_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9364/9799246/24c18b322fc3/10053_2022_549_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9364/9799246/02285eb6498e/10053_2022_549_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9364/9799246/18049384558f/10053_2022_549_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9364/9799246/4c4508dcf17b/10053_2022_549_Fig7_HTML.jpg

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本文引用的文献

1
Universality Classes of the Anderson Transitions Driven by Non-Hermitian Disorder.由非厄米无序驱动的安德森转变的普适类
Phys Rev Lett. 2021 Mar 5;126(9):090402. doi: 10.1103/PhysRevLett.126.090402.
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Observation of two-dimensional Anderson localisation of ultracold atoms.超冷原子二维安德森局域化的观测
Nat Commun. 2020 Oct 2;11(1):4942. doi: 10.1038/s41467-020-18652-w.
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Elastic Scattering Time of Matter Waves in Disordered Potentials.物质波在无序势中的弹性散射时间。
Phys Rev Lett. 2019 Mar 15;122(10):100403. doi: 10.1103/PhysRevLett.122.100403.
4
Controlling symmetry and localization with an artificial gauge field in a disordered quantum system.在无序量子系统中用人工规范场控制对称和局域化。
Nat Commun. 2018 Apr 11;9(1):1382. doi: 10.1038/s41467-018-03481-9.
5
Selective state spectroscopy and multifractality in disordered Bose-Einstein condensates: a numerical study.无序玻色-爱因斯坦凝聚体中的选择性态光谱与多重分形：一项数值研究。
Sci Rep. 2018 Feb 26;8(1):3641. doi: 10.1038/s41598-018-21870-4.
6
Measurement of Spectral Functions of Ultracold Atoms in Disordered Potentials.无序势场中超冷原子光谱函数的测量
Phys Rev Lett. 2018 Feb 9;120(6):060404. doi: 10.1103/PhysRevLett.120.060404.
7
Anderson Localization of Ultracold Atoms: Where is the Mobility Edge?超冷原子的安德森局域化：迁移率边缘在哪里？
Phys Rev Lett. 2017 Apr 28;118(17):170403. doi: 10.1103/PhysRevLett.118.170403.
8
Anderson Transition of Cold Atoms with Synthetic Spin-Orbit Coupling in Two-Dimensional Speckle Potentials.二维散斑势中具有合成自旋轨道耦合的冷原子的安德森转变
Phys Rev Lett. 2017 Mar 10;118(10):105301. doi: 10.1103/PhysRevLett.118.105301. Epub 2017 Mar 6.
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Exploring the many-body localization transition in two dimensions.探索二维中的多体局域化相变。
Science. 2016 Jun 24;352(6293):1547-52. doi: 10.1126/science.aaf8834.
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Suppression and Revival of Weak Localization through Control of Time-Reversal Symmetry.通过时间反演对称性控制实现弱局域化的抑制与恢复
Phys Rev Lett. 2015 May 22;114(20):205301. doi: 10.1103/PhysRevLett.114.205301. Epub 2015 May 18.