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 research team at Tohoku University's Advanced Institute for Materials Research (WPI-AIMR) has developed a new technique to rapidly and accurately determine the charge state of electrons confined in semiconductor quantum ...
Nanophysics
May 1, 2025
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Quasicrystals, exotic states of matter characterized by an ordered structure with non-repeating spatial patterns, have been the focus of numerous recent physics studies due to their unique organization and resulting symmetries. ...
As the demand for innovative materials continues to grow—particularly in response to today's technological and environmental challenges—research into nanomaterials is emerging as a strategic field. Among these materials, ...
Nanophysics
Apr 11, 2025
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101
The ability to control the color, or emission wavelength, of light from quantum sources is central to the development of secure quantum communication networks and photonic-based computing. However, most systems capable of ...
Nanophysics
Apr 1, 2025
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An international research team led by QuTech has realized a three-site Kitaev chain using semiconducting quantum dots coupled by superconducting segments in a hybrid InSb/Al nanowire. When comparing two-and three-site chains ...
Nanophysics
Mar 31, 2025
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Imagine building a Lego tower with perfectly aligned blocks. Each block represents an atom in a tiny crystal, known as a quantum dot. Just like bumping the tower can shift the blocks and change its structure, external forces ...
Nanophysics
Mar 24, 2025
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A research team led by Professor Sun Qing-Feng in collaboration with Professor He Lin's research group from Beijing Normal University has achieved orbital hybridization in graphene-based artificial atoms for the first time.
Nanophysics
Mar 21, 2025
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146
Peanut butter and jelly. Simon and Garfunkel. Semiconductors and bacteria. Some combinations are more durable than others. In recent years, an interdisciplinary team of Cornell researchers has been pairing microbes with the ...
Bio & Medicine
Mar 18, 2025
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115
Newly achieved precise control over light emitted from incredibly tiny sources, a few nanometers in size, embedded in two-dimensional (2D) materials could lead to remarkably high-resolution monitors and advances in ultra-fast ...
Nanophysics
Mar 7, 2025
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New research by Curtin University has achieved a breakthrough in eco-friendly display technology, creating highly efficient and stable blue quantum dot LEDs (QLEDs) that could power the next generation of televisions, smartphones, ...
Nanophysics
Mar 6, 2025
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