Quantum dots are nanoscale semiconductor physical systems in which charge carriers are confined in all three spatial dimensions, leading to discrete, atom-like energy levels and size-tunable optical and electronic properties. Their behavior is governed by quantum confinement, Coulomb interactions, and surface states, and is typically modeled using effective-mass, k·p, or tight-binding approaches. Quantum dots can be formed via colloidal synthesis, epitaxial self-assembly, or lithographic patterning, and exhibit phenomena such as single-photon emission, fluorescence intermittency, and Coulomb blockade. They serve as platforms for investigating coherent control, exciton dynamics, spin qubits, and engineered light–matter interactions in optoelectronic and quantum information devices.
A spin qubit, in which quantum information is encoded in the spin state of an electron, is one of the most promising platforms for quantum computing. Spin qubits exhibit long coherence times and are compatible with advanced ...
Quantum Physics
Jun 6, 2026
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Solar panels have become more efficient over the years, but even the best designs still lose a large fraction of the energy they absorb. Scientists around the world have been searching for ways to capture more energy from ...
Optics & Photonics
May 25, 2026
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103
The buildup of a protein called 𝛂-synuclein (ASN) into toxic clumps is a hallmark of synucleinopathies, a group of neurodegenerative diseases that includes Parkinson's and multiple system atrophy (MSA). These aggregates are ...
Bio & Medicine
May 24, 2026
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A research team led by Professor Sohee Jeong at Sungkyunkwan University has uncovered a key chemical pathway for the controlled synthesis of III–V semiconductor quantum dots, a class of next-generation infrared materials ...
Nanophysics
May 18, 2026
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For years, quantum computers have lived under a huge bubble of hype, promising to revolutionize numerous fields, from medicine and battery design to materials science and cybersecurity. But realizing their potential on any ...
Researchers at the Niels Bohr Institute have broken a longstanding barrier by managing to send single photons—that can't be copied or split and thus are secure—in the network of optical fibers we already have. This opens ...
Optics & Photonics
Apr 30, 2026
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285
Semiconductor spin qubits are a promising candidate for the building blocks of next-generation quantum computers due to their high potential for integration and compatibility with existing semiconductor technologies. Qubits—like ...
Condensed Matter
Apr 23, 2026
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Quantum computers, devices that process information leveraging quantum mechanical effects, could tackle some tasks that are difficult or impossible to solve using classical computers. These systems represent data as qubits, ...
Perovskite quantum dots are considered promising materials for LEDs, photocatalysis, and future quantum light sources. Researchers at LMU Munich have managed to master two major hurdles in working with these quantum dots: ...
Nanophysics
Apr 21, 2026
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A Majorana fermion is a particle that would be identical to its antiparticle. Such an object has not yet been found. However, certain solid materials exhibit analogous behavior as if Majorana fermions were present through ...
Condensed Matter
Apr 11, 2026
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