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Type I quantum dots are composed of a semiconductor core encapsulated in a second semiconductor material with a larger bandgap, which can passivate non-radiative recombination sites at the surface of the quantum dots and improve quantum yield. Inverse type I quantum dots have a semiconductor layer with a smaller bandgap which leads to ...
Typically, the size of the silicon quantum dots is defined by controlling material synthesis. For example, silicon quantum dot size can be controlled by the reaction temperature during thermal disproportionation of silsesquioxanes. [1] Similarly, the plasma residence time in non-thermal plasma methods is a key factor. [2]
Quantum teleportation is a technique for transferring quantum information from a sender at one location to a receiver some distance away. While teleportation is commonly portrayed in science fiction as a means to transfer physical objects from one location to the next, quantum teleportation only transfers quantum information. The sender does ...
Förster coupling is the resonant energy transfer between excitons within adjacent QD's (quantum dots). The first studies of Forster were performed in the context of the sensitized luminescence of solids. Here, an excited sensitizer atom can transfer its excitation to a neighbouring acceptor atom, via an intermediate virtual photon.
Schematic picture of energy levels and examples of different states. Discrete spectrum states [nb 1] (green), resonant states (blue dotted line) [1] and bound states in the continuum (red). Partially reproduced from [2] and [3] A bound state in the continuum (BIC) is an eigenstate of some particular quantum system with the following properties:
It has been suggested that Quantum energy teleportation be merged into this article. ( Discuss ) Proposed since January 2025. Quantum energy teleportation is a quantum protocol proposed by Masahiro Hotta in 2008 [ 1 ] allowing one party to put energy into the quantum vacuum , then send information to another party that lets them extract the ...
An exciton is a bound state of an electron and an electron hole which are attracted to each other by the electrostatic Coulomb force resulting from their opposite charges. It is an electrically neutral quasiparticle regarded as an elementary excitation primarily in condensed matter, such as insulators, semiconductors, some metals, and in some liquids.
Quantum wells transmit electrons of any energy above a certain level, while quantum dots pass only electrons of a specific energy. [ 10 ] One possible application is to convert waste heat from electric circuits, e.g., in computer chips, back into electricity, reducing the need for cooling and energy to power the chip.