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.
Putting hypersensitive quantum sensors in a living cell is a promising path for tracking cell growth and diagnosing diseases—even cancers—in their early stages.
Quantum Physics
May 24, 2025
0
133
A research team has successfully produced eco-friendly solar hydrogen for the first time based on a quantum semiconductor nanocluster, which is the world's smallest inorganic semiconductor material.
Nanomaterials
May 19, 2025
0
52
Researchers at QuTech in Delft have combined superconductors and quantum dots to observe and manipulate so-called Majorana bound states, which have properties that could enable stable quantum computation. By building a chain ...
Condensed Matter
May 2, 2025
0
123
Near-infrared photodetectors are used in biomedical sensing and defense and security technologies. For enhanced performance and integrated, compact imaging systems, the photodetectors must be able to detect multiple wavelengths ...
Nanophysics
May 1, 2025
0
80
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
0
36
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
0
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
0
37
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
0
63
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
0
110
