Patents by Inventor Peter LODAHL
Peter LODAHL has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230024502Abstract: This disclosure relates to an optical device comprising: a first filter waveguide section having an input for receiving a pump signal, the first filter waveguide section further having an output; an emitter waveguide section having an input coupled to the output of the first filter waveguide section to receive a transmitted pump signal therefrom, the emitter waveguide section supporting at least a first guided lower-order optical mode and a second guided higher-order optical mode, the emitter waveguide section comprising a photon emitter coupled to the first guided mode to emit radiation into the first guided mode and coupled to the second guided mode to allow optical pumping of the photon emitter by pump signal power carried in the second guided mode, the emitter waveguide section further having an output for outputting radiation emitted from the photon emitter; a second filter waveguide section having an input coupled to the output of the emitter waveguide section and having an output, the second filter wavType: ApplicationFiled: December 18, 2020Publication date: January 26, 2023Applicant: KØBENHAVNS UNIVERSITETInventors: Leonardo MIDOLO, Peter LODAHL, Ravitej UPPU, Henri Thyrrestrup NIELSEN
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Patent number: 11309684Abstract: The invention relates to coherent single photon sources that provide photons with a high degree of indistinguishability. It is a disadvantage of single photon sources based on QDs in nanophotonic structures that, even at low temperatures, acoustic vibrations interact with the QDs to reduce the coherence of the emitted spectrum. The invention uses mechanical clamping of the nanostructure to damp vibrations leading to a weaker QD—phonon coupling and a higher degree of indistinguishability between successively emitted photons. The clamp is mechanically connected to the length of the photonic nanostructure and has a stiffness and a size sufficient to suppress low frequency vibrations (??10 GHz) in a combined structure of the clamp and the nanostructure.Type: GrantFiled: May 18, 2018Date of Patent: April 19, 2022Assignee: Københavns UniversitetInventors: Peter Lodahl, Chris Lennart Dreessen, Petru Tighineanu, Anders Søndberg Sørensen, Leonardo Midolo
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Publication number: 20200112139Abstract: The invention relates to coherent single photon sources that provide photons with a high degree of indistinguishability. It is a disadvantage of single photon sources based on QDs in nanophotonic structures that, even at low temperatures, acoustic vibrations interact with the QDs to reduce the coherence of the emitted spectrum. The invention uses mechanical clamping of the nanostructure to damp vibrations leading to a weaker QD—phonon coupling and a higher degree of indistinguishability between successively emitted photons. The clamp is mechanically connected to the length of the photonic nanostructure and has a stiffness and a size sufficient to suppress low frequency vibrations (??10 GHz) in a combined structure of the clamp and the nanostructure.Type: ApplicationFiled: May 18, 2018Publication date: April 9, 2020Inventors: Peter Lodahl, Chris Lennart Dreessen, Petru Tighineanu, Anders Søndberg Sørensen, Leonardo Midolo
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Patent number: 10261250Abstract: An optical device comprising a planar waveguide and a quantum emitter is presented. The planar waveguide comprises a longitudinal extending guiding region with a first side and a second side. A first nanostructure is arranged on the first side of the guiding region, and a second nanostructure is arranged on the second side of the guiding region. The planar waveguide includes a first longitudinal region where the first nanostructure and the second nanostructure are arranged substantially glide-plane symmetric about the guiding region of the planar waveguide, and the quantum emitter is coupled to the first longitudinal region of the planar waveguide.Type: GrantFiled: June 15, 2015Date of Patent: April 16, 2019Assignee: UNIVERSITY OF COPENHAGENInventors: Sahand Mahmoodian, Immo Nathanael Söllner, Søren Stobbe, Peter Lodahl
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Publication number: 20180217331Abstract: A slow-light generating optical device (1) is disclosed. The optical device comprises a planar waveguide (2), and the planar waveguide comprises: a longitudinal extending guiding region (4) with a first side (6) and a second side (8), a first nanostructure (7) arranged on the first side (6) of the guiding region (4), and a second nanostructure (9) arranged on the second side (7) of the guiding region (4). The planar waveguide (2) includes a first longitudinal region where the first nanostructure (7) and the second structure (9) are arranged substantially glide-plane symmetric about the guiding region (4) of the planar waveguide, and the first and the second nanostructures (7, 9) are designed so that the planar waveguide has a band structure and is adapted to guide a forward propagating mode and a backward propagating mode possessing energy bands, which individually are non-degenerate and mutually degenerate, and which intersect each other and form a Dirac point at a Brillouin zone edge.Type: ApplicationFiled: April 19, 2016Publication date: August 2, 2018Applicant: UNIVERSITY OF COPENHAGENInventors: Søren STOBBE, Sahand MAHMOODIAN, Peter LODAHL, Pedro David Garcia FERNANDEZ
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Publication number: 20180210149Abstract: An optical device comprising a planar waveguide and a quantum emitter is presented. The planar waveguide comprises a longitudinal extending guiding region with a first side and a second side. A first nanostructure is arranged on the first side of the guiding region, and a second nanostructure arranged on the second side of the guiding region. The planar waveguide includes a first longitudinal region where the first nanostructure and the second structure are arranged substantially glide-plane symmetric about the guiding region of the planar waveguide, and the quantum emitter is coupled to the first longitudinal region of the planar waveguide.Type: ApplicationFiled: June 15, 2015Publication date: July 26, 2018Applicant: UNIVERSITY OF COPENHAGENInventors: Sahand MAHMOODIAN, Immo Nathanael SÖLLNER, Søren STOBBE, Peter LODAHL
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Patent number: 9798083Abstract: An optical device comprising a single-photon device, which is coupled to a planar waveguide is described. The planar waveguide comprises a nanostructured section, which includes a longitudinal extending guiding region with a first side and a second side, a first nanostructure arranged on the first side of the guiding region, and a second nanostructure arranged on the second side of the guiding region. The nanostructured section comprises a slow-mode section, in which the single-photon device is positioned or embedded, and in which the first nanostructure and second nanostructure suppress spontaneous emission into other modes. The planar waveguide further comprises a fiber coupler for coupling light out of the planar waveguide and into an optical fiber, the fiber coupler preferably being adapted to match a field profile of an optical fiber.Type: GrantFiled: July 7, 2015Date of Patent: October 24, 2017Assignee: UNIVERSITY OF COPENHAGENInventors: Sahand Mahmoodian, Immo Nathanael Söllner, Søren Stobbe, Peter Lodahl
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Publication number: 20170160474Abstract: An optical device comprising a single-photon device, which is coupled to a planar waveguide is described. The planar waveguide comprises a nanostructured section, which includes a longitudinal extending guiding region with a first side and a second side, a first nanostructure arranged on the first side of the guiding region, and a second nanostructure arranged on the second side of the guiding region. The nanostructured section comprises a slow-mode section, in which the single-photon device is positioned or embedded, and in which the first nanostructure and second nanostructure suppress spontaneous emission into other modes. The planar waveguide further comprises a fibre coupler for coupling light out of the planar waveguide and into an optical fibre, the fibre coupler preferably being adapted to match a field profile of an optical fibre.Type: ApplicationFiled: July 7, 2015Publication date: June 8, 2017Applicant: UNIVERSITY OF COPENHAGENInventors: Sahand MAHMOODIAN, Immo Nathanael SÖLLNER, Søren STOBBE, Peter LODAHL