OPTICAL SYSTEMS COMPRISING BINARY PHOTONICS LATTICES

    公开(公告)号:US20240069279A1

    公开(公告)日:2024-02-29

    申请号:US17766793

    申请日:2020-09-22

    CPC classification number: G02B6/1225

    Abstract: A binary photonics lattice that includes a waveguide array having a plurality of single mode waveguides disposed in a substrate, the plurality of single mode waveguides including one or more first waveguides having a first V-number V1 and one or more second waveguides having a second V-number V2. The first V-number V1 is smaller than the second V-number V2. The one or more first and second waveguides are arranged in a linear distribution having first and second edge waveguide regions and a binary waveguide region positioned between the first and second edge waveguide regions. The binary waveguide region is a symmetrical binary representation of a decimal number of two or greater. Further, the binary waveguide region includes at least one first waveguide representing a digit 0 of the symmetrical binary representation and/or at least one second waveguide representing a digit 1 of the symmetrical binary representation.

    Chalcogenide optical ring resonators for generating quantum-correlated photon pairs

    公开(公告)号:US11747709B2

    公开(公告)日:2023-09-05

    申请号:US17619065

    申请日:2020-06-16

    CPC classification number: G02F1/3526 G02F1/3536 G02F1/365

    Abstract: An optical ring resonator that includes a closed loop core, a cladding layer, and one or more bus waveguides. The closed loop core is disposed in the cladding layer and is As2Se3 glass. The one or more bus waveguides are disposed in the cladding layer and are optically coupled to the closed loop core. The closed loop core has a zero-dispersion wavelength within a telecommunication wavelength band. The closed loop core has a plurality of resonant modes, including a zero-dispersion resonant mode corresponding with the zero-dispersion wavelength and a plurality of paired resonant modes. Further, the closed loop core has a phase matching bandwidth extending greater than ±40 nm from the zero-dispersion wavelength.

    CHALCOGENIDE OPTICAL RING RESONATORS FOR GENERATING QUANTUM-CORRELATED PHOTON PAIRS

    公开(公告)号:US20220299839A1

    公开(公告)日:2022-09-22

    申请号:US17619065

    申请日:2020-06-16

    Abstract: An optical ring resonator that includes a closed loop core, a cladding layer, and one or more bus waveguides. The closed loop core is disposed in the cladding layer and is As2Se3 glass. The one or more bus waveguides are disposed in the cladding layer and are optically coupled to the closed loop core. The closed loop core has a zero-dispersion wavelength within a telecommunication wavelength band. The closed loop core has a plurality of resonant modes, including a zero-dispersion resonant mode corresponding with the zero-dispersion wavelength and a plurality of paired resonant modes. Further, the closed loop core has a phase matching bandwidth extending greater than ±40 nm from the zero-dispersion wavelength.

    Quantum key distribution systems having low loss dispersion limiting fibers

    公开(公告)号:US11431419B2

    公开(公告)日:2022-08-30

    申请号:US17297029

    申请日:2019-11-12

    Abstract: A quantum communications system includes a quantum key generation system having a photonic quantum bit generator, a low loss dispersion limiting fiber having a length L, for example greater than 200 km, and a photon detector unit and a communications network having a signal generator, a signal channel, and a signal receiver. The low loss dispersion limiting fiber extends between and optically couples the photonic quantum bit generator and the photon detector unit. Further, the low loss dispersion limiting fiber is structurally configured to limit dispersion at an absolute dispersion rate of about 9 ps/(nm)km or less, and preferably 0.5 ps/(nm)km or less, and induce attenuation at an attenuation rate of about 0.175 dB/km or less such that the quantum key bit information of a plurality of photons output by the one or more photonic quantum bit generators is receivable at the photon detector unit at a bit rate of at least 10 Gbit/sec.

    Methods and systems for empty pulse mitigation in quantum key distribution systems using entangled photons

    公开(公告)号:US10862678B2

    公开(公告)日:2020-12-08

    申请号:US15977371

    申请日:2018-05-11

    Abstract: A method of communicating information includes generating a photon pulse using an entangled photon generator. The photon pulse includes a photon pulse state and is temporally positioned within a photon pulse time slot. When the photon pulse is in a populated photon pulse state, it includes first and second entangled photons and the entangled photon generator outputs the first entangled photon into a first photon pathway optically coupled to an output end photon detector unit, and the second entangled photon into a second photon pathway, optically coupled to a receiving end photon detector unit. The method also includes determining the photon pulse state of the photon pulse using the output end photon detector unit, which outputs a signal regarding the photon pulse state of the photon pulse into a signal pathway to provide the receiving end photon detector unit with information regarding the photon pulse state of the photon pulse.

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