Quantum well. Scheme of heterostructure of nanometric dimensions that gives rise to quantum effects.The shaded part with length L shows the region with constant (discrete) valence band.[1]
A quantum well is a potential well with only discrete energy values.
The classic model used to demonstrate a quantum well is to confine particles, which were initially free to move in three dimensions, to two dimensions, by forcing them to occupy a planar region. The effects of quantum confinement take place when the quantum well thickness becomes comparable to the de Broglie wavelength of the carriers (generally electrons and holes), leading to energy levels called "energy subbands", i.e., the carriers can only have discrete energy values.
The concept of quantum well was proposed in 1963 independently by Herbert Kroemer and by Zhores Alferov and R.F. Kazarinov.[2][3]
^"Quantum Well Infrared Photon Detectors | IRnova". www.ir-nova.se. Retrieved 2018-09-04.
^Kroemer, H. (1963). "A proposed class of hetero-junction injection lasers". Proceedings of the IEEE. 51 (12). Institute of Electrical and Electronics Engineers (IEEE): 1782–1783. doi:10.1109/proc.1963.2706. ISSN 0018-9219.
^Zh. I. Alferov and R.F. Kazarinov, Authors Certificate 28448 (U.S.S.R) 1963.
A quantumwell is a potential well with only discrete energy values. The classic model used to demonstrate a quantumwell is to confine particles, which...
released from a potential well if sufficient energy is added to the system such that the local maximum is surmounted. In quantum physics, potential energy...
In quantum mechanics, the particle in a box model (also known as the infinite potential well or the infinite square well) describes the movement of a...
A quantum-well laser is a laser diode in which the active region of the device is so narrow that quantum confinement occurs. Laser diodes are formed in...
A QuantumWell Infrared Photodetector (QWIP) is an infrared photodetector, which uses electronic intersubband transitions in quantumwells to absorb photons...
potential well (also known as the finite square well) is a concept from quantum mechanics. It is an extension of the infinite potential well, in which...
entanglement Quantum fiction Quantum field theory Quantum lithography Quantum mechanics Quantum mind Quantum mysticism Quantum number Quantum optics Quantum sensor...
Quantum dots (QDs) or semiconductor nanocrystals are semiconductor particles a few nanometres in size with optical and electronic properties that differ...
reducing the quantumwell layer to a quantum wire or to a sea of quantum dots. In a quantum cascade laser, the difference between quantumwell energy levels...
In physics, quantum tunnelling, barrier penetration, or simply tunnelling is a quantum mechanical phenomenon in which an object such as an electron or...
of all quantum physics, which includes quantum chemistry, quantum field theory, quantum technology, and quantum information science. Quantum mechanics...
exciton resonances of the first (e1h1) and the second quantumwell subbands (e2, h2), as well as the absorption from the corresponding continuum states...
best-known and wealthiest figures in alternative medicine. His discussions of quantum healing have been characterized as technobabble – "incoherent babbling...
A quantum computer is a computer that takes advantage of quantum mechanical phenomena. On small scales, physical matter exhibits properties of both particles...
series of structures known as quantumwells. Briefly, as an electron hops from one quantumwell to another neighbouring well it produces a phonon. External...
A quantum field-effect transistor (QFET) or quantum-well field-effect transistor (QWFET) is a type of MOSFET (metal–oxide–semiconductor field-effect transistor)...
In quantum mechanics, quantum scarring refers to a phenomenon where the eigenstates of a classically chaotic quantum system have enhanced probability...
Quantum information is the information of the state of a quantum system. It is the basic entity of study in quantum information theory, and can be manipulated...
Quantum suicide is a thought experiment in quantum mechanics and the philosophy of physics. Purportedly, it can falsify any interpretation of quantum...
Laboratory. He works primarily in QuantumWell Infrared Photo Detecting. He is also a board member of QuantumWell Infrared Photodetector Technologies...
Quantum chemistry, also called molecular quantum mechanics, is a branch of physical chemistry focused on the application of quantum mechanics to chemical...
nor quantum effects can be ignored, such as in the vicinity of black holes or similar compact astrophysical objects, such as neutron stars as well as in...
Quantum machine learning is the integration of quantum algorithms within machine learning programs. The most common use of the term refers to machine learning...
Global Information