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Grating-Resonant SNSPD Design for Enhanced Absorption Efficiency via Waveguide and Photonic Confinement
This invention presents a novel superconducting nanowire single-photon detector (SNSPD) design that significantly enhances photon absorption efficiency by combining waveguide redirection and lateral photonic confinement. The approach increases the effective absorption cross-section of the nanowire without lengthening it—overcoming a key limitation...
Published: 6/30/2025
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Inventor(s): Mohamed ElKabbash
Keywords(s):
Category(s): Technology Classifications > Imaging & Optics > Telecommunications, Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Quantum
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High-Secured Ultrafast Quantum Communication
This technology is a method for secure, high speed quantum communication that uses ultrafast squeezed light. This ultrafast squeezed light Is generated by directing quantum light generated by a light field synthesizer (LFS) onto a silicon dioxide target. This light, which is generated at a petahertz-scale frequency, is used for quantum communication...
Published: 6/5/2025
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Inventor(s): Mohammed Tharwat Hassan
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Quantum, Technology Classifications > Engineering & Physical Sciences > Communications & Networking, Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Optical, Technology Classifications > Imaging & Optics > Telecommunications, Technology Classifications > Software & Information Technology > Security, Technology Classifications > Software & Information Technology > Communications & Networking
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Apodized Prism Coupler for Optimized Evanescent Mode Matching Between Optical Fibers and Integrated Waveguides
This invention is a novel optical coupling apparatus and method that uses a prism-based coupler with an apodized coupling region to optimize mode matching between an optical fiber and an on-chip waveguide. This invention adapts apodization for prism coupling. It shapes the diffracted output field into a Gaussian-like profile that closely matches the...
Published: 5/12/2025
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Inventor(s): Mohamed ElKabbash, James McGrath, Greg Madejski
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Imaging & Optics > Materials & Fabrication, Technology Classifications > Imaging & Optics > Telecommunications
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Method for Integrating Quantum Emitters as On-Chip Light Sources in Photonic Integrated Circuits Fabricated on Membranes
This invention presents a high-precision, scalable method for integrating quantum emitters as on-chip light sources in photonic integrated circuits (PICs) fabricated on thin-film membranes (e.g., SiN membranes). By utilizing nanopore trapping and deterministic positioning, this method enables precise placement of quantum dots (QDs), atomic defects,...
Published: 5/12/2025
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Inventor(s): Mohamed ElKabbash
Keywords(s):
Category(s): Technology Classifications > Imaging & Optics > Materials & Fabrication, Technology Classifications > Imaging & Optics > Telecommunications, Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Quantum
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Method and Structure for Optical Coupling in Photonic Integrated Circuits Using Etched Silicon Substrates
This invention introduces a novel method and structure for optical coupling in photonic integrated circuits (PICs) using etched silicon substrates. These etched features allow light to be introduced from beneath the substrate and efficiently coupled into on-chip waveguides. It enhances the efficiency of photonic couplings, allowing multiple input modes...
Published: 4/14/2025
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Inventor(s): Mohamed ElKabbash
Keywords(s):
Category(s): Technology Classifications > Imaging & Optics > Materials & Fabrication, Technology Classifications > Imaging & Optics > Telecommunications, Technology Classifications > Engineering & Physical Sciences > Photonics
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Two-Pumps-Based Entanglement Generation Source Enabling Entanglement-Assisted Communication over Turbulent Free-Space Optical (FSO) Channels
This technology improves Quantum Entangled Free Space Optical Communication by employing two laser pumps and modulating on the signal photons, while employing the idler photons as the reference signal. The use of two pumps gives the flexibility of generating the signal photons at arbitrary wavelength in C- and L-bands, which is not possible with the...
Published: 9/30/2024
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Inventor(s): Ivan Djordjevic, Vijay Nafria
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Communications & Networking, Technology Classifications > Imaging & Optics > Telecommunications, Technology Classifications > Engineering & Physical Sciences > Quantum
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Hybrid SESAM Output Coupler
A novel hybrid semiconductor saturable absorber mirror (SESAM)/dielectric output coupler has been developed and employed to demonstrate a mode locked vertical-external-cavity surface-emitting lasers (VECSEL). The hybrid SESAM enables a greatly simplified optical layout for developing short pulse laser sources utilizing semiconductor based VECSELs.
Background:...
Published: 9/5/2023
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Inventor(s): Ronald Jones, Jerome Moloney, Ricky Gibson, Sadhvikas Addamane, Garrett Cole
Keywords(s):
Category(s): Technology Classifications > Imaging & Optics > Lasers & Other Sources, Technology Classifications > Engineering & Physical Sciences > Communications & Networking, Technology Classifications > Imaging & Optics > Telecommunications, Technology Classifications > Imaging & Optics > Displays
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Versatile Space Telescope for Quantum Key Distribution
The Versatile CubeSat Telescope (VCT) is a CubeSat-enabled telescope design with an increased aperture and decreased divergence over state-of-the-art systems. It also provides thermal stability, which enhances the signal-to-noise ratio, reduces the error rate, and improves performance. Finally, it can preserve the polarization of received signals to...
Published: 6/20/2024
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Inventor(s): Ewan Douglas, Daewook Kim
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking, Technology Classifications > Imaging & Optics > Telecommunications
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Receiver Design for Entanglement-Assisted Classical Communication
This technology is a new type of receiver for entanglement-assisted classical communication, that is ideal for applications with noise or weak signal strength, and improves communication rates over existing solutions.
Background:
Entanglement-assisted classical communication describes the process by which the properties of quantum entanglement (such...
Published: 11/19/2024
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Inventor(s): Saikat Guha, Ali Cox, Quntao Zhuang, Christos Gagatsos, Boulat Bash
Keywords(s):
Category(s): Technology Classifications > Imaging & Optics > Telecommunications, Technology Classifications > Imaging & Optics > Telecommunications > Electro-Optic Devices, Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Optical, Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Wireless
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Software Code for Modified Prime Code Family for Optical CDMA
Researchers at the University of Arizona have developed a novel spreading/address code family for high-speed, large-capacity wired/wireless or optical communications. The novel "transposed modified prime codes" (T-MPC) have specific correlation properties and flexible code size, length and weight. This code family is comparable to existing...
Published: 4/3/2023
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Inventor(s): Franko Kueppers, Mohammad Karbassian
Keywords(s):
Category(s): Technology Classifications > Imaging & Optics, Technology Classifications > Imaging & Optics > Telecommunications
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