Photon pair source and method for its production
AssigneeTechnische UniversitäT Berlin
InventorsMomme Winkelnkemper, Andrei Schliwa, Dieter Bimberg
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Abstract
The invention relates to a method for the production of a photon pair source, which generates entangled photon pairs, having at least one quantum dot, wherein in the method the operational behaviour of the photon pair source is determined by adjusting the fine structure splitting of the excitonic energy level of the at least one quantum dot. It is provided according to the invention for the fine structure splitting of the excitonic energy level to be adjusted by depositing the at least one quantum dot on a {111} crystal surface of a semiconductor substrate.
Claims20
A method for producing a photon pair source, which generates entangled photon pairs, comprising at least one quantum dot,
- wherein, in the method, the operational behavior of the photon pair source is defined by setting the fine structure splitting of the excitonic energy level of the at least one quantum dot,
- wherein the fine structure splitting of the excitonic energy level is set by the at least one quantum dot being deposited on a {111} crystal face of a semiconductor substrate,
- wherein each of the at least one quantum dot includes at least a three-fold axis of symmetry,
- and wherein the fine structure splitting is zero.
A photon pair source for generating entangled photon pairs comprising at least one quantum dot,
- wherein the at least one quantum dot is deposited on a {111} crystal face of a semiconductor substrate, and
- wherein each of the at least one quantum dot is deposited on a planar surface of the {111} crystal face.
A photon pair source for generating entangled photon pairs comprising at least one quantum dot,
- wherein the at least one quantum dot is deposited on a {111} crystal face of a semiconductor substrate,
- wherein each of the at least one quantum dot includes at least a three-fold axis of symmetry, and
- wherein fine structure splitting of the at least one quantum dot is close to zero.
A method for producing a photon pair source, which generates entangled photon pairs, comprising at least one quantum dot,
- wherein, in the method, the operational behavior of the photon pair source is defined by setting the fine structure splitting of the excitonic energy level of the at least one quantum dot,
- wherein the fine structure splitting of the excitonic energy level is set by the at least one quantum dot being deposited on a {111} crystal face of a semiconductor substrate, and
- wherein each of the at least one quantum dot is deposited on a planar surface of the {111} crystal face.
Dependencies are inferred from the claim text.