Related Experiment Video
Updated: Jul 27, 2025
10:40
High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
7.6K
Splitting phonons: Building a platform for linear mechanical quantum computing
H Qiao1, É Dumur1,2, G Andersson1
1Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL 60637, USA.
Science (New York, N.Y.)
|June 8, 2023
Summary
Researchers developed a phononic beam splitter for quantum computing. This solid-state system uses phonons, not photons, and demonstrates two-phonon interference for two-qubit gates.
Area of Science:
- Quantum computing
- Solid-state physics
- Quantum optics
Background:
- Linear optical quantum computing is a promising approach.
- Phonons offer potential for mechanical quantum computing.
- A key component, the phononic beam splitter, was missing.
Purpose of the Study:
- To demonstrate a phononic beam splitter.
- To characterize the beam splitter using single phonons.
- To show two-phonon interference for quantum computing.
Main Methods:
- Utilized two superconducting qubits.
- Characterized a beam splitter with single phonons.
- Demonstrated two-phonon interference.
Main Results:
- Successfully demonstrated a phononic beam splitter.
- Characterized the beam splitter's performance with single phonons.
- Achieved two-phonon interference, essential for two-qubit gates.
Conclusions:
- This work presents a new solid-state system for linear quantum computing.
- The demonstrated phononic beam splitter is a crucial element.
- Enables straightforward conversion between phonons and superconducting qubits.
Related Concept Videos
01:08IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations
1.1K
Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single...
1.1K
02:45The Quantum-Mechanical Model of an Atom
42.6K
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.
42.6K
01:13¹H NMR: Complex Splitting
1.3K
A proton M that is coupled to a proton X results in doublet signals for M. However, NMR-active nuclei can be simultaneously coupled to more than one nonequivalent nucleus. When M is coupled to a second proton A, such as in styrene oxide, each peak in the doublet is split into another doublet.
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied...
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied...
1.3K
02:32The de Broglie Wavelength
26.0K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
26.0K
01:28Standing Waves in a Cavity
965
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
965
01:16IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration
1.4K
A covalently bonded heteronuclear diatomic molecule can be modeled as two vibrating masses connected by a spring. The vibrational frequency of the bond can be expressed using an equation derived from Hooke's law, which describes how the force applied to stretch or compress a spring is proportional to the displacement of the spring. In this case, the atoms behave like masses, and the bond acts like a spring.
According to Hooke's law, the vibrational frequency is directly proportional to...
According to Hooke's law, the vibrational frequency is directly proportional to...
1.4K