Physics:Quantum reflection - Revision history

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	==References==		==References==
	<references/>		<references/>

	~~==See also==~~

	* Atom optics
	* Ridged mirror
	* Casimir force
	* van der Waals potential

	~~{{DEFAULTSORT:Quantum Reflection}}~~
	~~[[Category:Quantum optics]]~~

	~~{{Author\|Harold Foppele}}~~

	~~{{Sourceattribution\|Physics:Quantum reflection\|1}}~~

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	''Related topic:'' Grazing incidence diffraction		''Related topic:'' Grazing incidence diffraction

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	==Application of quantum reflection==		==Application of quantum reflection==
	Quantum reflection makes the idea of solid-state [[Physics:Atomic mirror\|atomic mirror]]s and atomic-beam imaging systems (atomic nanoscope) possible.<ref name="nanoscope"/> The use of '''quantum reflection''' in the production of atomic traps has also been suggested.<ref name="appli"/>		Quantum reflection makes the idea of solid-state [[Physics:Atomic mirror\|atomic mirror]]s and atomic-beam imaging systems (atomic nanoscope) possible.<ref name="nanoscope"/> The use of '''quantum reflection''' in the production of atomic traps has also been suggested.<ref name="appli"/>

			== See also ==
			{{#invoke:PhysicsQC\|tocHeadingAndList\|Physics:Quantum basics/See also}}

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	[[Category:Quantum optics]]		[[Category:Quantum optics]]

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			{{Sourceattribution\|Physics:Quantum reflection\|1}}

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 {{short description|Physical phenomenon}}
 {{Quantum book backlink|Quantum dynamics and evolution}}
 {{See also|Grazing incidence diffraction}}
 '''Quantum reflection''' is a uniquely quantum phenomenon in which an object, such as a neutron or a small molecule, reflects smoothly and in a wavelike fashion from a much larger surface, such as a pool of mercury. A classically behaving neutron or molecule will strike the same surface much like a thrown ball, hitting only at one atomic-scale location where it is either absorbed or scattered. Quantum reflection provides a powerful experimental demonstration of particle-wave duality, since it is the extended quantum [[Physics:Wave packet|wave packet]] of the particle, rather than the particle itself, that reflects from the larger surface. It is similar to [[Physics:Reflection high-energy electron diffraction|reflection high-energy electron diffraction]], where electrons reflect and diffraction from surfaces,<ref name="Ichimiya">{{Cite book |last1=Ichimiya |first1=Ayahiko |title=Reflection high-energy electron diffraction |date=2004 |publisher=Cambridge University Press |last2=Cohen | first2=Philip |isbn=0-521-45373-9 |location=Cambridge, U.K. |oclc=54529276}}</ref><ref>{{Cite book |last=Braun |first=Wolfgang |title=Applied RHEED: reflection high-energy electron diffraction during crystal growth |date=1999 |publisher=Springer |isbn=3-540-65199-3 |location=Berlin |oclc=40857022}}</ref> and grazing incidence atom scattering,<ref>{{Cite journal |last1=Khemliche |first1=H. |last2=Rousseau |first2=P. |last3=Roncin |first3=P. |last4=Etgens |first4=V. H. |last5=Finocchi |first5=F. |date=2009 |title=Grazing incidence fast atom diffraction: An innovative approach to surface structure analysis |journal=Applied Physics Letters |volume=95 |issue=15 |page=151901 |doi=10.1063/1.3246162 |bibcode=2009ApPhL..95o1901K |issn=0003-6951}}</ref><ref>{{Cite journal |last1=Bundaleski |first1=N. |last2=Khemliche |first2=H. |last3=Soulisse |first3=P. |last4=Roncin |first4=P. |date=2008 |title=Grazing Incidence Diffraction of keV Helium Atoms on a Ag(110) Surface |journal=Physical Review Letters |volume=101 |issue=17 |article-number=177601 |doi=10.1103/physrevlett.101.177601 |pmid=18999787 |bibcode=2008PhRvL.101q7601B |issn=0031-9007}}</ref> where the fact that atoms (and ions) can also be waves is used to diffract from surfaces.
 ==Definition==
 In a workshop about quantum reflection,<ref name ="QR2007">Quantum Reflection, workshop; October 22–24, 2007, Cambridge, Massachusetts, USA; http://cfa-www.harvard.edu/itamp/QuantumReflection.html </ref> the following definition of quantum reflection was suggested:

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