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公开(公告)号：US20240085631A1
公开(公告)日：2024-03-14
申请号：US18370785
申请日：2023-09-20
Applicant: PsiQuantum, Corp. , The University of Bristol
Inventor： Damien Bonneau , Mark Thompson
CPC classification number: G02B6/2861 , G02B6/262 , H01P9/00
Abstract: An optical device includes a first multi-mode waveguide, a first optical coupler coupled to the first multi-mode waveguide, the first coupler being tapered and curved, and a first single-mode waveguide having a first end coupled to the first optical coupler. The optical device maybe used in an optical delay device. A method of propagating light in a first multi-mode waveguide toward a first optical coupler, propagating the light in the first optical coupler toward a first single-mode waveguide, the first optical coupler being tapered and curved, and propagating the light along the first single-mode waveguide is also disclosed.
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公开(公告)号：US10541809B2
公开(公告)日：2020-01-21
申请号：US15556762
申请日：2016-03-08
Applicant: The University of Bristol
Inventor： Mark Godfrey , Mark Thompson , Philip Sibson
Abstract: There is provided an integrated-optic transmitter for transmitting light pulses to a further optical apparatus for generating a quantum cryptographic key according to at least one quantum cryptography technique. There is also provided an integrated-optic receiver for generating a quantum cryptographic key from light pulses received from a further optical apparatus. The transmitter apparatus splits incoming light into two paths to temporally separate the split light pulses and controls the output intensity of each split pulse as well as the phase of at least one of the split pulses. The receiver apparatus receives first and second light pulses and controls the output intensity of each said pulse between a first and a second optical detector. The light input into the second detector passes through an integrated element that controls the amount of light output into two paths that recombine before at least a portion is output to the second detector.
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公开(公告)号：US20150123017A1
公开(公告)日：2015-05-07
申请号：US14404602
申请日：2013-05-29
Applicant: The University of Bristol
Inventor： Siyuan Yu , Mark Thompson , Xinlun Cai
IPC: G02B6/124
CPC classification number: G02B6/124 , G02B6/12007
Abstract: The invention relates to methods, devices, systems and uses of such systems for the generation and detection of electromagnetic fields carrying orbital angular momentum. An electromagnetic wave placed in a resonator having a closed-loop waveguide supporting a guided wave propagating at resonance with angular order, p, and with an angular grating patterned in the closed-loop waveguide, the angular grating having a integer number, q, of grating elements. The angular grating selectively couples the guided wave mode to a free space radiation mode having an OAM quantity, l, and out-of-plane wave vector component, krad,z, and wherein significant coupling to the grating occurs only when the following wave matching condition is satisfied: l=p−mq where: m is the diffraction order of the angular grating, m=1, 2, 3, . . . ,.
Abstract translation: 本发明涉及用于产生和检测携带轨道角动量的电磁场的这种系统的方法，装置，系统和用途。 放置在具有闭环波导的谐振器中的电磁波，该闭环波导支持以角度阶数p共振传播的导波，并且具有在闭环波导中图案化的角光栅，角光栅具有整数q 光栅元件。 角光栅将导波模式选择性地耦合到具有OAM量，l和面外波矢量分量krad，z的自由空间辐射模式，并且其中仅当以下波形匹配时才发生与光栅的显着耦合 条件满足：l = p-mq其中：m是角光栅的衍射级，m = 1,2,3。 。 。 ，。
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Patent Agency Ranking
公开(公告)号：US20240402429A1
公开(公告)日：2024-12-05
申请号：US18773408
申请日：2024-07-15
Applicant: PsiQuantum, Corp. , The University of Bristol
Inventor： Damien Bonneau , Mark Thompson
Abstract: An optical device includes a first multi-mode waveguide, a first optical coupler coupled to the first multi-mode waveguide, the first coupler being tapered and curved, and a first single-mode waveguide having a first end coupled to the first optical coupler. The optical device maybe used in an optical delay device. A method of propagating light in a first multi-mode waveguide toward a first optical coupler, propagating the light in the first optical coupler toward a first single-mode waveguide, the first optical coupler being tapered and curved, and propagating the light along the first single-mode waveguide is also disclosed.
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公开(公告)号：US09103975B2
公开(公告)日：2015-08-11
申请号：US14404602
申请日：2013-05-29
Applicant: The University of Bristol
Inventor： Siyuan Yu , Mark Thompson , Xinlun Cai
CPC classification number: G02B6/124 , G02B6/12007
Abstract: The invention relates to methods, devices, systems and uses of such systems for the generation and detection of electromagnetic fields carrying orbital angular momentum. An electromagnetic wave placed in a resonator having a closed-loop waveguide supporting a guided wave propagating at resonance with angular order, p, and with an angular grating patterned in the closed-loop waveguide, the angular grating having a integer number, q, of grating elements. The angular grating selectively couples the guided wave mode to a free space radiation mode having an OAM quantity, l, and out-of-plane wave vector component, krad,z, and wherein significant coupling to the grating occurs only when the following wave matching condition is satisfied: l=p−mq where: m is the diffraction order of the angular grating, m=1, 2, 3, . . . ,.
Abstract translation: 本发明涉及用于产生和检测携带轨道角动量的电磁场的这种系统的方法，装置，系统和用途。 放置在具有闭环波导的谐振器中的电磁波，该闭环波导支持以角度阶数p共振传播的导波，并且具有在闭环波导中图案化的角光栅，角光栅具有整数q 光栅元件。 角光栅将导波模式选择性地耦合到具有OAM量，l和面外波矢量分量krad，z的自由空间辐射模式，并且其中仅当以下波形匹配时才发生与光栅的显着耦合 条件满足：l = p-mq其中：m是角光栅的衍射级，m = 1,2,3。 。 。 ，。
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公开(公告)号：US09952482B2
公开(公告)日：2018-04-24
申请号：US15260446
申请日：2016-09-09
Applicant: The University of Bristol
Inventor： Terence Rudolph , Mark Thompson , Jonathan Matthews , Damien Bonneau
CPC classification number: G02F1/3526 , G01J1/42 , G02F1/3536 , G02F1/3553 , G02F1/3558 , G02F1/365 , G02F2201/06 , G02F2203/15
Abstract: There is presented an optical apparatus comprising first and second photon pair sources configured to convert at least one pump light photon into a first and second correlated signal and idler photon pairs. In one example, the apparatus is configured to use one of the signal and idler photons from the first correlated photon pair for controlling the conversion of the pump light photon in the second photon pair source. The apparatus may configured such that, at least one of the signal and idler photons from the first correlated photon pair is output from the first photon pair source onto an optical path wherein at least one of the signal and idler photons from the second correlated photon pair is output from the second photon pair source onto the optical path. A method is also provided for outputting one or more photons using the optical apparatus.
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公开(公告)号：US12066661B2
公开(公告)日：2024-08-20
申请号：US18370785
申请日：2023-09-20
Applicant: PsiQuantum, Corp. , The University of Bristol
Inventor： Damien Bonneau , Mark Thompson
CPC classification number: G02B6/2861 , G02B6/262 , H01P9/00
Abstract: An optical device includes a first multi-mode waveguide, a first optical coupler coupled to the first multi-mode waveguide, the first coupler being tapered and curved, and a first single-mode waveguide having a first end coupled to the first optical coupler. The optical device may be used in an optical delay device. A method of propagating light in a first multi-mode waveguide toward a first optical coupler, propagating the light in the first optical coupler toward a first single-mode waveguide, the first optical coupler being tapered and curved, and propagating the light along the first single-mode waveguide is also disclosed.
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公开(公告)号：US20180062838A1
公开(公告)日：2018-03-01
申请号：US15556762
申请日：2016-03-08
Applicant: The University of Bristol
Inventor： Mark Godfrey , Mark Thompson , Philip Sibson
Abstract: There is provided an integrated-optic transmitter for transmitting light pulses to a further optical apparatus for generating a quantum cryptographic key according to at least one quantum cryptography technique. There is also provided an integrated-optic receiver for generating a quantum cryptographic key from light pulses received from a further optical apparatus. The transmitter apparatus splits incoming light into two paths to temporally separate the split light pulses and controls the output intensity of each split pulse as well as the phase of at least one of the split pulses. The receiver apparatus receives first and second light pulses and controls the output intensity of each said pulse between a first and a second optical detector. The light input into the second detector passes through an integrated element that controls the amount of light output into two paths that recombine before at least a portion is output to the second detector.
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