Related Experiment Video
Updated: Sep 30, 2025
05:30
Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
Published on: September 8, 2023
675
Parallel quantum annealing
Elijah Pelofske1, Georg Hahn2, Hristo N Djidjev3,4
1Los Alamos National Laboratory CCS-3 Information Sciences, Los Alamos, NM, 87545, USA. epelofske@lanl.gov.
Scientific Reports
|March 17, 2022
Summary
Parallel quantum annealing improves efficiency by solving multiple NP-hard problems simultaneously on quantum annealers. This novel method significantly reduces the Time-To-Solution (TTS) for problems like Maximum Clique, making better use of available qubits.
Area of Science:
- Quantum Computing
- Computational Complexity
Background:
- Quantum annealers offer efficient solutions for NP-hard problems by mapping them to physical qubits.
- Limited qubit connectivity necessitates minor embedding, often leaving qubits unused, especially for smaller problems.
Purpose of the Study:
- To introduce parallel quantum annealing for enhanced qubit utilization.
- To evaluate the impact of parallel quantum annealing on the Time-To-Solution (TTS) for NP-hard problems.
Main Methods:
- Proposed a novel parallel quantum annealing method to solve multiple problems in a single annealing cycle.
- Applied the method to instances of the Maximum Clique problem on D-Wave quantum annealers.
Main Results:
- Parallel quantum annealing demonstrated dramatic speed-ups in TTS compared to sequential solving.
- Solving a single Maximum Clique problem with parallel quantum annealing significantly reduced TTS.
- Individual solution quality may slightly decrease when solving multiple problems concurrently.
Conclusions:
- Parallel quantum annealing is an effective strategy for improving the efficiency of quantum annealers.
- This method enhances qubit utilization and significantly reduces the Time-To-Solution for specific NP-hard problems.
Related Concept Videos
01:17Ampere-Maxwell's Law: Problem-Solving
805
A parallel-plate capacitor with capacitance C, whose plates have area A and separation distance d, is connected to a resistor R and a battery of voltage V. The current starts to flow at t = 0. What is the displacement current between the capacitor plates at time t? From the properties of the capacitor, what is the corresponding real current?
To solve the problem, we can use the equations from the analysis of an RC circuit and Maxwell's version of Ampère's law.
For the first part of...
To solve the problem, we can use the equations from the analysis of an RC circuit and Maxwell's version of Ampère's law.
For the first part of...
805
01:20Parallel Processing
271
The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
271
02:45The Quantum-Mechanical Model of an Atom
49.9K
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.
49.9K
03:06The Pauli Exclusion Principle
52.6K
The arrangement of electrons in the orbitals of an atom is called its electron configuration. We describe an electron configuration with a symbol that contains three pieces of information:
52.6K
02:43Quantum Numbers
42.4K
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.
42.4K
01:31Ampere's Law: Problem-Solving
3.7K
Ampere's law states that for any closed looped path, the line integral of the magnetic field along the path equals the vacuum permeability times the current enclosed in the loop. If the fingers of the right hand curl along the direction of the integration path, the current in the direction of the thumb is considered positive. The current opposite to the thumb direction is considered negative.
Specific steps need to be considered while calculating the symmetric magnetic field distribution...
Specific steps need to be considered while calculating the symmetric magnetic field distribution...
3.7K