Related Experiment Video
Updated: Feb 2, 2026
07:34
Intravital Microscopy of the Inguinal Lymph Node
Published on: April 4, 2011
21.0K
Majorana Doublets, Flat Bands, and Dirac Nodes in s-Wave Superfluids
Haiping Hu1, Fan Zhang1, Chuanwei Zhang1
1Department of Physics, The University of Texas at Dallas, Richardson, Texas 75080, USA.
Physical Review Letters
|November 17, 2018
Summary
Researchers propose a new method to create exotic topological superfluids using ultracold atomic gases. This approach stabilizes Majorana Kramers pairs (MKPs) and their flat bands, offering a platform for quantum computation.
Area of Science:
- Condensed Matter Physics
- Quantum Materials
- Ultracold Atomic Gases
Background:
- Topological superfluids are exotic states of matter with potential applications in quantum computing.
- Realizing these superfluids typically requires unconventional pairing, posing experimental challenges.
- Majorana Kramers pairs (MKPs) are key exotic excitations in these systems.
Purpose of the Study:
- To propose a novel scheme for realizing topological superfluids with emergent symmetries.
- To investigate the stability and properties of Majorana Kramers pairs (MKPs) in these systems.
- To explore the potential of this platform for quantum computation.
Main Methods:
- Utilizing s-wave pairing in two coupled 1D ultracold atomic Fermi gases with spin-orbit coupling.
- Stacking these 1D systems into a 2D configuration.
- Analyzing the emergent mirror and time-reversal symmetries and their impact on MKPs.
Main Results:
- Discovery of topological and Dirac-nodal superfluids hosting distinct MKP flat bands.
- Demonstration that emergent symmetries stabilize MKPs and their flat bands against pairing fluctuations.
- Identification of a viable experimental platform for realizing and studying MKPs.
Conclusions:
- The proposed scheme offers a robust pathway to realize topological superfluids with emergent symmetries.
- This work provides a unique platform for exploring Majorana Kramers pairs (MKPs) and their applications in quantum computation.
- The stability of MKPs under realistic conditions is a significant advancement for the field.
Related Concept Videos
02:35Band Theory
17.2K
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,...
17.2K
02:12The Wave Nature of Light
61.3K
The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
61.3K
01:01Energy Bands in Solids
2.0K
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...
2.0K
01:28Flat Belts: Problem Solving
819
Flat belts are crucial in many industrial applications as they help transmit power from one pulley to another. The concept of forces and moments is used to determine the maximum moment on a pulley. For instance, consider a flat belt that wraps around two pulleys, A and B, with radii of 30 cm and 10 cm, respectively. The angle between the belt and the horizontal is 20 degrees at the pulleys. As pulley B rotates clockwise and drives pulley A, tension T2 is caused at one end of the belt, while...
819
01:28Frictional Forces on Flat Belts
1.5K
Flat belts are commonly used in various industrial applications for transmitting power from one pulley to another. When a flat belt is wrapped around a set of pulleys, it experiences different tensions at the driving pulley ends due to the friction between the belt and pulley surface. When the pulley moves in a counterclockwise direction, the tension T2 on the opposite side of the pulley where the belt is moving away from is higher than the tension T1 on the side where the belt is moving...
1.5K
01:05Fluid Pressure over Flat Plate of Constant Width
2.5K
When a body is submerged in water, it experiences fluid pressure acting normal on its surface and distributed over its area. For better design structures, it is crucial to determine the magnitude and location of the resultant force acting on the surface. In the case of a rectangular plate of constant width submerged in water, the pressure increases with depth, resulting in a linearly varying trapezoidal pressure distribution from the upper to the lower edge of the plate.
The resultant force...
The resultant force...
2.5K