Related Experiment Video
Updated: Sep 1, 2025
05:39
Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
9.7K
Tweezer-programmable 2D quantum walks in a Hubbard-regime lattice.
Aaron W Young1, William J Eckner1, Nathan Schine1
1JILA, University of Colorado and National Institute of Standards and Technology, and Department of Physics, University of Colorado, Boulder, CO 80309, USA.
Science (New York, N.Y.)
|August 18, 2022
Summary
Researchers demonstrate programmable quantum walks using optical tweezers and lattices. This approach enables enhanced spatial search algorithms for quantum information science.
Area of Science:
- Quantum Physics
- Quantum Information Science
Background:
- Quantum walks offer a universal and intuitive framework for quantum algorithm design.
- Programmable control over quantum walker graphs is crucial for harnessing quantum computational power while maintaining coherence.
Purpose of the Study:
- To investigate continuous-time quantum walks of single atoms on a programmable square lattice.
- To demonstrate proof-of-principle spatial search algorithms using these quantum walks.
Main Methods:
- Combining optical tweezers for fast, programmable control with optical lattices for a scalable, homogeneous environment.
- Studying the dynamics of single atoms undergoing quantum walks on a square lattice.
Main Results:
- Successful implementation of programmable quantum walks on a square lattice.
- Proof-of-principle demonstration of spatial search capabilities using these walks.
Conclusions:
- The demonstrated capabilities, when scaled to more particles, can advance quantum information science.
- This technique provides a pathway to more effective spatial search algorithms on complex graphs.
Related Concept Videos
01:12Bewley Lattice Diagram
828
The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
828
03:35Hybridization of Atomic Orbitals II
33.2K
sp3d and sp3d 2 Hybridization
33.2K
01:12Fermi Level Dynamics
334
The vacuum level denotes the energy threshold required for an electron to escape from a material surface. It is usually positioned above the conduction band of a semiconductor and acts as a benchmark for comparing electron energies within various materials.
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
334
02:45The Quantum-Mechanical Model of an Atom
43.0K
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.
43.0K
02:33Lattice Centering and Coordination Number
9.8K
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
Types of Unit Cells
Imagine taking a large number of identical...
9.8K
03:24Hybridization of Atomic Orbitals I
48.2K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
48.2K