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1. 发明申请

US20110315901A1 NON-DEGENERATE POLARIZATION-ENTANGLED PHOTON PAIR GENERATION DEVICE AND NON-DEGENERATE POLARIZATION-ENTANGLED PHOTON PAIR GENERATION METHOD 有权
标题翻译：非变性偏振光子对发生装置和非变性偏振光子对发生方法
公开(公告)号：US20110315901A1
公开(公告)日：2011-12-29
申请号：US12672578
申请日：2008-12-10
申请人： Keiichi Edamatsu , Ryosuke Shimizu , Shigehiro Nagano
发明人： Keiichi Edamatsu , Ryosuke Shimizu , Shigehiro Nagano
IPC分类号： G02F1/39
CPC分类号： G02F1/39 , B82Y10/00 , G06N99/002 , H04B10/70 , H04L9/0858
摘要： A non-degenerate polarization-entangled photon pair generation device (1) that efficiently and easily generates non-degenerate polarization-entangled photon pairs includes: a quantum-entangled photon pair generator (2) including a single crystal in which periodically poled structures (3a, 3b) having different periods are formed; and a light radiating unit (4) for entering light into the quantum-entangled photon pair generator (2) such that the light passes through the periodically poled structure (3a) and then through the periodically poled structure (3b). A period of the periodically poled structure (3a) is different from a period of the periodically poled structure (3b) such that a parabola indicative of a relation between an emission angle and a wavelength of a polarized photon emitted based on light incident on the periodically poled structure (3a) comes into contact with a parabola indicative of a relation between an emission angle and a wavelength of polarized photon emitted based on light incident on the periodically poled structure (3b), within an allowable range under a phase matching condition.
摘要翻译：一种非简并极化纠缠光子对产生装置（1），其有效且容易地产生非简并极化纠缠光子对包括：量子纠缠光子对发生器（2），其包括单晶体，其中周期性极化结构（3a ，3b）形成; 以及用于将光进入量子纠缠光子对发生器（2）的光辐射单元（4），使得光通过周期性极化结构（3a）然后穿过周期性极化结构（3b）。周期性极化结构（3a）的周期与周期性极化结构（3b）的周期不同，使得表示基于周期性地发生的光发射的偏振光子的发射角和波长之间的关系的抛物线极化结构（3a）在相位匹配条件的允许范围内，与基于入射在周期性极化结构（3b）上的光发射的偏振光子的发射角和波长之间的关系的抛物线接触。

2. 发明授权

US08488231B2 Generator of polarization entangled photon pairs and method of generating the same 有权
标题翻译：发生器的偏振纠缠光子对及其产生方法
公开(公告)号：US08488231B2
公开(公告)日：2013-07-16
申请号：US13376107
申请日：2010-06-03
申请人： Ryosuke Shimizu , Keiichi Edamatsu
发明人： Ryosuke Shimizu , Keiichi Edamatsu
IPC分类号： G02F1/35 , H04L9/00
CPC分类号： H04B10/70 , G02F1/35 , G02F2202/20 , H04J14/02 , H04L9/0858
摘要： A wavelength-multiplexed polarization entangled photon pair generator (1) includes: a pump light source (2); a polarization entangled photon pair generating body (4) on which pump light (3) outputted from the pump light source (2) falls; and a spectrometer (7) on which a wavelength-multiplexed parametric photon pair (5) outputted from the polarization entangled photon pair generating body 4 falls. The polarization entangled photon pair generating body (4) made of a nonlinear optical crystal (11) generates wavelength-multiplexed photon pairs by subjecting the pump light 3 to type II phase matching. As a nonlinear optical crystal 11, lithium tantalate of periodically poled structure (11A) can be used, and as a spectrometer (7), an arrayed-waveguide grating can be used. Wavelength-multiplexed polarization entangled photon pairs (5) can thus be generated with simple equipment.
摘要翻译：波长多路复用偏振纠缠光子对发生器（1）包括：泵浦光源（2）; 偏振纠缠光子对发生体（4），泵浦光源（2）输出的泵浦光（3）落在其上; 以及从偏振纠缠光子对产生体4输出的波长多路复用参数光子对（5）的光谱仪（7）。由非线性光学晶体（11）制成的极化纠缠光子对产生体（4）通过对泵浦光3进行II型相位匹配来产生波长多路复用的光子对。作为非线性光学晶体11，可以使用周期性极化结构（11A）的钽酸锂，作为光谱仪（7），可以使用阵列波导光栅。波分复用偏振纠缠光子对（5）可以用简单的设备生成。

3. 发明授权

US08173982B2 Non-degenerate polarization-entangled photon pair generation device and non-degenerate polarization-entangled photon pair generation method 有权
标题翻译：非退化极化纠缠光子对生成器件和非退化极化纠缠光子对生成方法
公开(公告)号：US08173982B2
公开(公告)日：2012-05-08
申请号：US12672578
申请日：2008-12-10
申请人： Keiichi Edamatsu , Ryosuke Shimizu , Shigehiro Nagano
发明人： Keiichi Edamatsu , Ryosuke Shimizu , Shigehiro Nagano
IPC分类号： G02F1/35 , G02F1/39 , G01N21/63
CPC分类号： G02F1/39 , B82Y10/00 , G06N99/002 , H04B10/70 , H04L9/0858
摘要： A non-degenerate polarization-entangled photon pair generation device (1) that efficiently and easily generates non-degenerate polarization-entangled photon pairs includes: a quantum-entangled photon pair generator (2) including a single crystal in which periodically poled structures (3a, 3b) having different periods are formed; and a light radiating unit (4) for entering light into the quantum-entangled photon pair generator (2) such that the light passes through the periodically poled structure (3a) and then through the periodically poled structure (3b). A period of the periodically poled structure (3a) is different from a period of the periodically poled structure (3b) such that a parabola indicative of a relation between an emission angle and a wavelength of a polarized photon emitted based on light incident on the periodically poled structure (3a) comes into contact with a parabola indicative of a relation between an emission angle and a wavelength of polarized photon emitted based on light incident on the periodically poled structure (3b), within an allowable range under a phase matching condition.
摘要翻译：一种非简并极化纠缠光子对产生装置（1），其有效且容易地产生非简并极化纠缠光子对包括：量子纠缠光子对发生器（2），其包括单晶体，其中周期性极化结构（3a ，3b）形成; 以及用于将光进入量子纠缠光子对发生器（2）的光辐射单元（4），使得光通过周期性极化结构（3a）然后穿过周期性极化结构（3b）。周期性极化结构（3a）的周期与周期性极化结构（3b）的周期不同，使得表示基于周期性地发生的光发射的偏振光子的发射角和波长之间的关系的抛物线极化结构（3a）在相位匹配条件的允许范围内，与基于入射在周期性极化结构（3b）上的光发射的偏振光子的发射角和波长之间的关系的抛物线接触。

4. 发明授权

US07683361B2 Method for generating quantum-entangled photon pairs 失效
标题翻译：用于产生量子纠缠光子对的方法
公开(公告)号：US07683361B2
公开(公告)日：2010-03-23
申请号：US11587003
申请日：2004-11-02
申请人： Keiichi Edamatsu , Tadashi Itoh
发明人： Keiichi Edamatsu , Tadashi Itoh
IPC分类号： H01L33/00
CPC分类号： G02F1/3526
摘要： A method for generating a quantum-entangled photon pair is such that a biexciton in such a state that the angular momentum is 0 is generated through two-photon resonance induced by irradiating a semiconductor substance, e.g., CuCl, with two parent photons (angular frequency ωi). A photon pair is then generated by splitting the biexciton thus generated simultaneously into two photons (angular frequencies ωs and ωs′). Since the photon pair is generated by splitting such biexciton having an angular momentum of 0, it has a quantum entanglement with regard to polarization. Since the photon thus generated has a wavelength substantially equal to that of the parent photons, photons of shorter wavelength in a quantum entangled state can be generated.
摘要翻译：用于产生量子纠缠光子对的方法是这样的，即在角动量为0的状态下的双键通过通过用两个父光子照射半导体物质例如CuCl而产生的双光子共振（角频率 ωi）。然后通过将由此同时产生的比特分成两个光子（角频率ωs和ωs'）来产生光子对。由于光子对是通过分割角动量为0的像素产生的，所以它具有关于偏振的量子纠缠。由于这样产生的光子的波长基本上等于母光子的波长，所以可以产生量子纠缠状态的较短波长的光子。

5. 发明申请

US20090251703A1 Optical nonliner evaluation device and optical switching element 失效
标题翻译：光学非线性评估装置和光开关元件
公开(公告)号：US20090251703A1
公开(公告)日：2009-10-08
申请号：US11990627
申请日：2006-12-06
申请人： Keiichi Edamatsu , Ryosuke Shimizu , Nobuyuki Matsuda
发明人： Keiichi Edamatsu , Ryosuke Shimizu , Nobuyuki Matsuda
IPC分类号： G01C19/72 , G02F1/025
CPC分类号： G02F1/3511 , G01J9/02 , G02F1/3519
摘要： An optical nonlinear evaluation device (1) capable of accurately evaluating the optical nonlinearity of a Kerr medium in accordance with a phase difference caused by cross-phase modulation generated in the Kerr medium includes: a polarization Sagnac interference path (3) provided with a Kerr medium (4); an optical pulse light source (7) for supplying a signal beam (Dsig); a polarization beam splitter (PBS1) for splitting the signal beam (Dsig) into a signal beam (Hsig) and a signal beam (Vsig) polarized in a direction orthogonal to the signal beam (Hsig), for supplying the signal beam (Hsig) to a first side of the Kerr medium (4), and for supplying the signal beam (Vsig) to a second side of the Kerr medium (4); a glass plate (14) for entering, onto the signal beam (Hsig), a control beam (Vcont) for causing a change in phase difference between the signal beam (Hsig) and the signal beam (Vsig); separating means for separating the control beam (Vcont) from the signal beam (Hsig) having traveled through the Kerr medium (4); and a detection section (10) provided so as to detect the phase difference between the signal beam (Hsig) and the signal beam (Vsig).
摘要翻译：能够根据由克尔介质中产生的交叉相位调制引起的相位差精确地评估克尔介质的光学非线性的光学非线性评估装置（1）包括：提供有克尔的极化Sagnac干涉路径（3）中等（4）; 用于提供信号光束（Dsig）的光脉冲光源（7）; 用于将信号光束（Dsig）分离成信号光束（Hsig）的偏振分束器（PBS1）和与信号光束（Hsig）正交的方向偏振的信号光束（Vsig），用于提供信号光束（Hsig）到所述克尔介质（4）的第一侧，并且用于将所述信号光束（Vsig）提供给所述克尔介质（4）的第二侧; 用于在信号光束（Hsig）上输入用于引起信号光束（Hsig）和信号光束（Vsig）之间的相位差变化的控制光束（Vcont）的玻璃板（14）; 分离装置，用于从已经穿过克尔介质（4）的信号光束（Hsig）分离控制光束（Vcont）; 以及检测部（10），以检测信号光束（Hsig）和信号光束（Vsig）之间的相位差。

6. 发明申请

US20090016386A1 Quantum Entanglement Photon-Pair Producing Device and Quantum Entanglement Photon Pair Producing Method 失效
标题翻译：量子纠缠光子对产生装置和量子纠缠光子对生产方法
公开(公告)号：US20090016386A1
公开(公告)日：2009-01-15
申请号：US12224289
申请日：2007-03-01
申请人： Keiichi Edamatsu , Ryosuke Shimizu
发明人： Keiichi Edamatsu , Ryosuke Shimizu
IPC分类号： H01S3/10
CPC分类号： G02F1/39 , B82Y10/00 , G06N99/002
摘要： In one embodiment of the present invention, a quantum entangled photon-pair producing device is disclosed which includes a superposed state generating device for generating a superposed state of photon-pairs entering through N (N≧2) different incident optical paths and being composed of photons having different polarization directions, and a light-guide device for separating the photon-pairs entering through the N (e.g. N is two) incident optical paths into photons having a first polarization direction (e.g. horizontally polarized light) and those having a second polarization direction (e.g. vertically polarized light) and guiding the photons having the first polarization direction and entering through the i-th (1≦i≦N) (e.g. the first) incident optical path and photons having the second polarization direction and entering through the (N−i+1) (e.g. the second) incident optical path to the i-th (e.g. the first) exit optical path through optical paths having the same optical path length. Therefore, quantum entangled photons of N channels having a quantum correlation with regard to the polarization direction can be produced. With this, a quantum entangled photon-pair producing device capable of producing quantum entangled photon-pairs of multi-channel having a quantum correlation with regard to the polarization direction with high production efficiency is realized.
摘要翻译：在本发明的一个实施例中，公开了一种量子纠缠光子对产生装置，其包括用于产生通过N（N> = 2）个不同入射光路进入的光子对的叠加状态的叠加状态产生装置，的光子具有不同的偏振方向，以及导光装置，用于将通过N（例如N是两个）入射的光子对分离成具有第一偏振方向（例如水平偏振光）的光子，并且具有第二偏振方向的光子偏振方向（例如垂直偏振光），并引导具有第一偏振方向的光子并通过第i（1≤i≤N）（例如第一）入射光路和具有第二偏振方向的光子进入通过具有相同光路径的光路的第（N-i + 1）（例如第二）入射光路到第i（例如第一）出射光路 H。因此，可以产生与偏振方向有量子相关性的N个通道的量子纠缠光子。由此，实现了能够以高生产效率产生与极化方向有量子相关性的多通道量子纠缠光子对的量子纠缠光子对产生装置。

7. 发明申请

US20070216991A1 Method For Generating Quantum-Entangled Photon Pairs 失效
标题翻译：生成量子纠缠光子对的方法
公开(公告)号：US20070216991A1
公开(公告)日：2007-09-20
申请号：US11587003
申请日：2004-11-02
申请人： Keiichi Edamatsu , Tadashi Itoh
发明人： Keiichi Edamatsu , Tadashi Itoh
IPC分类号： G02F1/35
CPC分类号： G02F1/3526
摘要： A method for generating a quantum-entangled photon pair is such that a biexciton in such a state that the angular momentum is 0 is generated through two-photon resonance induced by irradiating a semiconductor substance, e.g., CuCl, with two parent photons (angular frequency ωi). A photon pair is then generated by splitting the biexciton thus generated simultaneously into two photons (angular frequencies ωs and ωs′). Since the photon pair is generated by splitting such biexciton having an angular momentum of 0, it has a quantum entanglement with regard to polarization. Since the photon thus generated has a wavelength substantially equal to that of the parent photons, photons of shorter wavelength in a quantum entangled state can be generated.
摘要翻译：用于产生量子纠缠光子对的方法是这样的，即在角动量为0的状态下的双键通过通过用两个父光子照射半导体物质例如CuCl而产生的双光子共振（角频率欧米茄）。然后通过将由此同时产生的双峰分裂成两个光子（角频率ω和ω'）来产生光子对。由于光子对是通过分割角动量为0的像素产生的，所以它具有关于偏振的量子纠缠。由于这样产生的光子的波长基本上等于母光子的波长，所以可以产生量子纠缠状态的较短波长的光子。

8. 发明授权

US07706425B2 Littrow external oscillator semiconductor laser optical axis deviation correction method and device 失效
标题翻译： Littrow外部振荡器半导体激光光轴偏差校正方法及装置
公开(公告)号：US07706425B2
公开(公告)日：2010-04-27
申请号：US11587387
申请日：2005-04-22
申请人： Akifumi Takamizawa , Keiichi Edamatsu
发明人： Akifumi Takamizawa , Keiichi Edamatsu
IPC分类号： H01S3/08
CPC分类号： B82Y20/00 , B82Y10/00 , H01S5/005 , H01S5/0071 , H01S5/141 , H01S5/143
摘要： A Littrow-type external-cavity diode laser optical axis displacement correction method and device to easily, inexpensively, and accurately correct displacement of optical axis in Littrow-type ECDLs is provided. In the Littrow-type ECDL optical axis displacement correction device and method, a means for introducing a laser beam, a jig 36 for integrally fixing a diffraction grating 33 and a prism 35 into which the laser beam is introduced in a predetermined arrangement, and a rotary shaft 34 capable of integrally rotating the diffraction grating 33 and the prism 35 are included. By the rotation of the diffraction grating 33 and the prism 35 around the rotary shaft 34, the wavelength of the incident light can be changed, and the optical axis of the output light 39 is not changed by the change of the wavelength.
摘要翻译：提供了一种Littrow型外腔二极管激光光轴位移校正方法和装置，可以轻松，低成本，准确地校正Littrow型ECDL中光轴的位移。在Littrow型ECDL光轴位移校正装置和方法中，用于引入激光束的装置，用于整体固定衍射光栅33的夹具36和以预定布置引入激光束的棱镜35，以及包括能够使衍射光栅33和棱镜35一体旋转的旋转轴34。通过围绕旋转轴34的衍射光栅33和棱镜35的旋转，可以改变入射光的波长，并且输出光39的光轴不会因波长的变化而改变。

9. 发明授权

US07570419B2 Quantum entanglement photon-pair producing device and quantum entanglement photon pair producing method 失效
标题翻译：量子纠缠光子对产生装置和量子纠缠光子对的产生方法
公开(公告)号：US07570419B2
公开(公告)日：2009-08-04
申请号：US12224289
申请日：2007-03-01
申请人： Keiichi Edamatsu , Ryosuke Shimizu
发明人： Keiichi Edamatsu , Ryosuke Shimizu
IPC分类号： G02F1/35 , H04L9/00
CPC分类号： G02F1/39 , B82Y10/00 , G06N99/002
摘要： In one embodiment of the present invention, a quantum entangled photon-pair producing device is disclosed which includes a superposed state generating device for generating a superposed state of photon-pairs entering through N (N≧2) different incident optical paths and being composed of photons having different polarization directions, and a light-guide device for separating the photon-pairs entering through the N (e.g. N is two) incident optical paths into photons having a first polarization direction (e.g. horizontally polarized light) and those having a second polarization direction (e.g. vertically polarized light) and guiding the photons having the first polarization direction and entering through the i-th (1≦i≦N) (e.g. the first) incident optical path and photons having the second polarization direction and entering through the (N−i+1) (e.g. the second) incident optical path to the i-th (e.g. the first) exit optical path through optical paths having the same optical path length. Therefore, quantum entangled photons of N channels having a quantum correlation with regard to the polarization direction can be produced. With this, a quantum entangled photon-pair producing device capable of producing quantum entangled photon-pairs of multi-channel having a quantum correlation with regard to the polarization direction with high production efficiency is realized.
摘要翻译：在本发明的一个实施例中，公开了一种量子纠缠光子对产生装置，其包括用于产生通过N（N> = 2）个不同入射光路进入的光子对的叠加状态的叠加状态产生装置，的光子具有不同的偏振方向，以及导光装置，用于将通过N（例如N是两个）入射的光子对分离成具有第一偏振方向（例如水平偏振光）的光子，并且具有第二偏振方向的光子偏振方向（例如垂直偏振光），并引导具有第一偏振方向的光子并通过第i（1≤i≤N）（例如第一）入射光路和具有第二偏振方向的光子进入通过具有相同光路径的光路的第（N-i + 1）（例如第二）入射光路到第i（例如第一）出射光路 H。因此，可以产生与偏振方向有量子相关性的N个通道的量子纠缠光子。由此，实现了能够以高生产效率产生与极化方向有量子相关性的多通道量子纠缠光子对的量子纠缠光子对产生装置。

10. 发明申请

US20080031293A1 Littrow External Oscillator Semiconductor Laser Optical Axis Deviation Correction Method And Device 失效
标题翻译： Littrow外部振荡器半导体激光光轴偏差校正方法和器件
公开(公告)号：US20080031293A1
公开(公告)日：2008-02-07
申请号：US11587387
申请日：2005-04-22
申请人： Akifumi Takamizawa , Keiichi Edamatsu
发明人： Akifumi Takamizawa , Keiichi Edamatsu
IPC分类号： H01S3/00
CPC分类号： B82Y20/00 , B82Y10/00 , H01S5/005 , H01S5/0071 , H01S5/141 , H01S5/143
摘要： A Littrow-type external-cavity diode laser optical axis displacement correction method and device to easily, expensively, and accurately correct displacement of optical axis in Littrow-type ECDLs is provided. In the Littrow-type ECDL optical axis displacement correction device and method, a means for introducing a laser beam, a jig 36 for integrally fixing a diffraction grating 33 and a prism 35 into which the laser beam is introduced in a predetermined arrangement, and a rotary shaft 34 capable of integrally rotating the diffraction grating 33 and the prism 35 are included. By the rotation of the diffraction grating 33 and the prism 35 around the rotary shaft 34, the wavelength of the incident light can be changed, and the optical axis of the output light 39 is not changed by the change of the wavelength.
摘要翻译：提供了Littrow型外腔二极管激光光轴位移校正方法和装置，可以轻松，高效，准确地校正Littrow型ECDL中的光轴位移。在Littrow型ECDL光轴位移校正装置和方法中，用于引入激光束的装置，用于整体固定衍射光栅33的夹具36和以预定布置引入激光束的棱镜35，以及包括能够使衍射光栅33和棱镜35一体旋转的旋转轴34。通过围绕旋转轴34的衍射光栅33和棱镜35的旋转，可以改变入射光的波长，并且输出光39的光轴不会因波长的变化而改变。

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