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The Weyl semimetals are three-dimensional (3D) gapless topological phases with Weyl cones in the bulk band, and host massless quasiparticles known as Weyl fermions which were theorized by Hermann Weyl in the last twenties. The lattice theory constrains that Weyl cones must come in pairs, with the minimal number of cones being two. The semimetal with only two Weyl cones is an ideal Weyl semimetal (IWSM) which is the optimal platform to explore broad Weyl physics but hard to engineer in solids.
Here, we report the experimental realization of the IWSM band by synthesising for the first time a 3D spin-orbit (SO) coupling for ultracold atoms. Engineering a 3D configuration-tunable optical Raman lattice, we realize the Weyl-type SO coupling for ultracold quantum gas, with which the IWSM band is achieved with controllability. The topological Weyl points are clearly measured via the virtual slicing imaging technique in equilibrium, and further resolved in the quench dynamics, revealing the key information of the realized IWSM bands. The realization of the IWSM band opens an avenue to investigate various exotic phenomena based on the optimal Weyl semimetal platforms.

Quantum 2020

Realization of ideal Weyl semimetal band in ultracold quantum gas with 3D Spin-Orbit coupling

quantum gas

weyl semimetal

spin-orbit coupling

The Institute of Physics and IOP Publishing, in partnership with the Chinese Physical Society (CPS) and the University of Science and Technology of China (USTC) are proud to have brought together the international quantum science community online for this inaugural conference.


Early career and leading researchers from universities, industry and government worldwide came together to share, learn and collaborate on the latest research and emerging areas of high interest across quantum science and technology. The broad themes covered by Quantum 2020 included:

Quantum communication;
Quantum computing and quantum simulation;
Quantum sensing, metrology and imaging;
Quantum information theory, software and algorithms;
Quantum foundations;
Quantum technology in industry.
The four-day event featured talks from world-renowned scientists, interactive poster sessions and two exciting panel discussions on the themes of Quantum Technology in Industry and Quantum Technology Programmes Around the World.


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The Institute of Physics and IOP Publishing, in partnership with the Chinese Physical Society (CPS) and the University of Science and Technology of China (USTC) are proud to have brought together the international quantum science community online for this inaugural conference.

Early career and leading researchers from universities, industry and government worldwide came together to share, learn and collaborate on the latest research and emerging areas of high interest across quantum science and technology. 

technical paper

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Nat Stevens: Ganged Coaxial Solutions to Scale up Quantum Computing - Amphenol Ardent Concepts

One-Dimensional Superradiance Lattices in Ultracold Atoms

Quantum information processing with mechanical systems

Engineering qubits in diamond for scalable quantum technologies

A bright and fast source of coherent single photons

keynote

invited talk

https://d3smihljt9218e.cloudfront.net/transcript/2135/subtitle/b313e4166bbcc1f44813df5c962a1c8a.vtt

English (automatic)

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Realization of ideal Weyl semimetal band in ultracold quantum gas with 3D Spin-Orbit coupling

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JILA: A dipolar quantum gas of reactive molecules

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