Related Experiment Video
Updated: Jan 26, 2026
05:39
Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
10.3K
Simulation and Manipulation of Tunable Weyl-Semimetal Bands Using Superconducting Quantum Circuits
Xinsheng Tan1, Y X Zhao1, Qiang Liu1
1National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093, China.
Physical Review Letters
|April 24, 2019
Summary
Researchers used superconducting quantum circuits to simulate Weyl semimetal bands, directly imaging Weyl points and their topological properties. This work advances topological physics and the study of exotic quantum materials.
Area of Science:
- Condensed Matter Physics
- Quantum Information Science
Background:
- Weyl semimetals are topological materials with unique electronic properties.
- Superconducting quantum circuits offer a controllable platform for simulating complex quantum phenomena.
Purpose of the Study:
- To simulate tunable Weyl semimetal bands using superconducting quantum circuits.
- To experimentally probe the topological properties of Weyl points.
Main Methods:
- Driving superconducting quantum circuits with microwave fields to map parameter space.
- Measuring the energy spectrum to image Weyl points.
- Calculating Berry curvature to determine topological winding numbers.
Main Results:
- Successfully simulated highly tunable Weyl semimetal bands.
- Directly imaged Weyl points and measured their topological winding numbers.
- Demonstrated manipulation of band structure to create artificial magnetic fields.
Conclusions:
- Superconducting quantum circuits provide a powerful tool for simulating and understanding Weyl semimetals.
- The ability to manipulate band structure opens avenues for exploring topological currents.
- This research has significant implications for topological physics and quantum technologies.
Related Concept Videos
02:43Quantum Numbers
49.5K
It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
49.5K
02:35Band Theory
17.1K
When two or more atoms come together to form a molecule, their atomic orbitals combine and molecular orbitals of distinct energies result. In a solid, there are a large number of atoms, and therefore a large number of atomic orbitals that may be combined into molecular orbitals. These groups of molecular orbitals are so closely placed together to form continuous regions of energies, known as the bands.
The energy difference between these bands is known as the band gap.
Conductor, Semiconductor,...
The energy difference between these bands is known as the band gap.
Conductor, Semiconductor,...
17.1K
02:45The Quantum-Mechanical Model of an Atom
56.8K
Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
56.8K
01:01Energy Bands in Solids
1.9K
Isolated atoms have discrete energy levels that are well described by the Bohr model. And, it quantifies the energy of an electron in a hydrogen atom as En. Higher quantum numbers 'n' yield less negative, closer electron energy levels.
Band Formation:
When atoms are brought close together, as in a solid, these discrete energy levels begin to split due to the overlap of electron orbitals from adjacent atoms. This split occurs because of the Pauli exclusion principle, which states...
Band Formation:
When atoms are brought close together, as in a solid, these discrete energy levels begin to split due to the overlap of electron orbitals from adjacent atoms. This split occurs because of the Pauli exclusion principle, which states...
1.9K
01:17Second-Order Circuits
3.3K
Integrating two fundamental energy storage elements in electrical circuits results in second-order circuits, encompassing RLC circuits and circuits with dual capacitors or inductors (RC and RL circuits). Second-order circuits are identified by second-order differential equations that link input and output signals.
Input signals typically originate from voltage or current sources, with the output often representing voltage across the capacitor and/or current through the inductor. For example, in...
Input signals typically originate from voltage or current sources, with the output often representing voltage across the capacitor and/or current through the inductor. For example, in...
3.3K
01:15First-Order Circuits
3.3K
First-order electrical circuits, which comprise resistors and a single energy storage element - either a capacitor or an inductor, are fundamental to many electronic systems. These circuits are governed by a first-order differential equation that describes the relationship between input and output signals.
One common example of a first-order circuit is the RC (resistor-capacitor) circuit. These circuits are used in relaxation oscillators such as neon lamp oscillator circuits. When voltage is...
One common example of a first-order circuit is the RC (resistor-capacitor) circuit. These circuits are used in relaxation oscillators such as neon lamp oscillator circuits. When voltage is...
3.3K