Hybrid Quantum–Classical Algorithms: At the Verge of Useful Quantum Computing
© The Physical Society of Japan
This article is on
Hybrid QuantumClassical Algorithms and Quantum Error Mitigation
J. Phys. Soc. Jpn.
90,
032001
(2021)
.
Scientists discuss the recent progress in algorithms that have enabled hybrid quantum–classical computers, which has brought the quest to realize useful quantum computing much closer to its finish line.
Hybrid QuantumClassical Algorithms and Quantum Error Mitigation
J. Phys. Soc. Jpn.
90,
032001
(2021)
.
Share this topic
Fields
Related Articles

Electricity Provides Cooling
Crossdisciplinary physics and related areas of science and technology
Magnetic properties in condensed matter
Structure and mechanical and thermal properties in condensed matter
20241015
Electric cooling at low temperatures is successfully achieved using a ferroelectric ferromagnetic solid instead of refrigerant gases such as fluorocarbons. 
A Promising Solution to Nucleon–Nucleon Inverse Scattering Problem
General and Mathematical Physics
Mathematical methods, classical and quantum physics, relativity, gravitation, numerical simulation, computational modeling
Nuclear physics
2024107
This study deals with the inverse elastic twobody quantum scattering problem using Volterra approximations and neural networks, offering a novel approach for solving complex nonlinear systems.

A New Method for Finding Bound States in the Continuum
General and Mathematical Physics
Mathematical methods, classical and quantum physics, relativity, gravitation, numerical simulation, computational modeling
Nuclear physics
2024101
This study presents a general theory for constructing potentials supporting bound states in the continuum, offering a method for identifying such states in real quantum systems.

PressureTuned Classical–Quantum Crossover in Magnetic FieldInduced Quantum Phase Transitions of a TriangularLattice Antiferromagnet
Crossdisciplinary physics and related areas of science and technology
Electron states in condensed matter
Magnetic properties in condensed matter
202495
The correspondence principle states that as quantum numbers approach infinity, the nature of a system described by quantum mechanics should match that described by classical mechanics. Quantum phenomena, such as quantum superposition and quantum correlation, generally become unobservable when a system approaches this regime. Conversely, as quantum numbers decrease, classical descriptions give way to observable quantum effects. The external approach to classical–quantum crossover has attracted research interest. This study aims to demonstrate a method for achieving such control in materials.

General QuasiJoint Probabilities on FiniteState Quantum Systems
Mathematical methods, classical and quantum physics, relativity, gravitation, numerical simulation, computational modeling
2024815
This study investigates the properties of general quasijoint probability distributions in finitestate quantum systems, revealing the KirkwoodDirac distribution as among the most favorable. This highlights the importance of complex distributions in understanding quantum probability.