quantum tunneling


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Related to quantum tunneling: Quantum entanglement

quantum tunneling

n.
A quantum mechanical effect in which particles have a finite probability of crossing an energy barrier, such as the energy needed to break a bond with another particle, even though the particle's energy is less than the energy barrier. The emission of particles from an atom's nucleus in radioactive decay is a case of quantum tunneling; the phenomenon is also exploited in the design of many electrical components.
References in periodicals archive ?
Another important quantum mechanical phenomenon that plays a very important role in quantum computing is quantum tunneling that allows a subatomic particle to go through a potential barrier, which otherwise would have been impossible to achieve, if it were to obey only the physical laws of classical mechanics.
'In it, quantum 'tubes' of magnetic flux can move around a central capacitor by a process known as quantum tunneling, where they overcome classically insurmountable obstacles,' explained professor Jared Cole of the Royal Melbourne Institute of Technology, Australia.
Since CPCs are a combination of conductive particles separated by very thin layers of polymer, quantum tunneling effect happens.
Mehdipour, "Hawking radiation as quantum tunneling from a noncommutative Schwarzschild black hole," Classical and Quantum Gravity, vol.
Zheng, "Quantum tunneling process for double well potential," International Journal of Quantum Chemistry, vol.
Among the topics are transcendental versus quantitative meanings of his complementarity principle, his relational holism and the classical-quantum interaction, complementarity and quantum tunneling, individuality and correspondence: an exploration of the history and possible future of Bohrian quantum empiricism, Bohr and the formalism of quantum mechanics, and why QBism is not the Copenhagen interpretation and what John Bell might have thought of it.
Simply because the size of the fiber is smaller than the wavelength of light that passes through it, light "spills out" due to a quantum mechanical effect akin to quantum tunneling. It is thanks to this "spillage" that light propagating through the fiber can interact with the atoms which are outside of it!
Shortly after, Walker proposed consciousness was associated with quantum tunneling of electrons through the synapse which generated a virtual neuronal network functioning in parallel with the ordinary neuronal network (Walker 1970).
Scientists noticed that within the tiny channels of the mineral beryl, water exhibits a unique property known in physics as quantum tunneling.
This happens via quantum tunneling, which means the current through a single-electron transistor suffers from the randomness of shot noise.
The scanning tunneling microscope is based on the concept of quantum tunneling. When a conducting tip is brought very near to the surface to be examined, a bias (voltage difference) applied between the two can allow electrons to tunnel through the vacuum between them.
"It's also interesting to think that those water molecules in your aquamarine or emerald ring -- blue and green varieties of beryl -- are undergoing the same quantum tunneling we've seen in our experiments."
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