Patents by Inventor Leonardo Midolo
Leonardo Midolo 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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Patent number: 12204145Abstract: 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: GrantFiled: December 18, 2020Date of Patent: January 21, 2025Assignee: KØBENHAVNS UNIVERSITETInventors: Leonardo Midolo, Peter Lodahl, Ravitej Uppu, Henri Thyrrestrup Nielsen
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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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Patent number: 10732035Abstract: A double membrane microspectrometer is provided that includes a first membrane having a first and second doped semiconductor layers, and a first intrinsic layer is disposed between the first and second layers, where the first intrinsic layer includes an optically absorbing material, a first pattern of through holes are disposed perpendicular through the first membrane having lateral support arms, a second membrane having a third doped layer and a fourth layer is an intrinsic layer or a doped layer, where the second membrane includes a second pattern of through holes, where the first membrane is separated from the second membrane by an insulating bridge layer and is supported above the second membrane by lateral support arms, where an absorption spectrum of the absorbing material is dependent on the separation distance of the membranes, electrodes are disposed on the first layer, the second layer, and the third layer operate the separation.Type: GrantFiled: January 6, 2017Date of Patent: August 4, 2020Assignee: Technische Universiteit EindhovenInventors: Andrea Fiore, Robertus Willebrordus van der Heijden, Leonardo Midolo, {hacek over (Z)}arko Zobenica, Tianran Liu
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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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Publication number: 20190072428Abstract: A double membrane microspectrometer is provided that includes a first membrane having a first and second doped semiconductor layers, and a first intrinsic layer is disposed between the first and second layers, where the first intrinsic layer includes an optically absorbing material, a first pattern of through holes are disposed perpendicular through the first membrane having lateral support arms, a second membrane having a third doped layer and a fourth layer is an intrinsic layer or a doped layer, where the second membrane includes a second pattern of through holes, where the first membrane is separated from the second membrane by an insulating bridge layer and is supported above the second membrane by lateral support arms, where an absorption spectrum of the absorbing material is dependent on the separation distance of the membranes, electrodes are disposed on the first layer, the second layer, and the third layer operate the separation.Type: ApplicationFiled: January 6, 2017Publication date: March 7, 2019Inventors: Andrea Fiore, Robertus Willebrordus VAN DER HEIJDEN, Leonardo Midolo, Zarko Zobenica, Tianran Liu