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    • 2. 发明申请
    • ENTANGLED PHOTON ELLIPSOMETRY
    • 电子照相机ELLIPSOMETRY
    • WO0242748A3
    • 2003-03-06
    • PCT/US0143713
    • 2001-11-21
    • UNIV BOSTONTOUSSAINT KIMANI C JRABOURADDY AYMAN FSERGIENKO ALEXANDER VSALEH BAHAA E ATEICH MALVIN C
    • TOUSSAINT KIMANI C JRABOURADDY AYMAN FSERGIENKO ALEXANDER VSALEH BAHAA E ATEICH MALVIN C
    • G01N21/21
    • G01N21/211
    • A system for obtaining ellipsometric data from a sample. The system includes a source (12) for providing a monochromatic light beam. The system also includes a nonlinear crystal (14) for converting the monochromatic light beam into photon pairs by disintegrating photons from the monochromatic light beam, such that each of the photon pairs exhibits entanglement properties, wherein one of the photons of the pair is directed to the sample (16) and the other of the photons of the pair is not directed to the sample. The system furhter includes a circuit (40) for calculating the coincidence of one of the photons of the photon pair reflected from the sample and the other of the photons of the photon pair, wherein the measurements of the sample are obtained by analyzing the coincidence and the entanglement properties between one of the photons of the photon pair reflected from the sample and the other of the photons of the photon pair.
    • 用于从样本获取椭圆数据的系统。 该系统包括用于提供单色光束的源(12)。 该系统还包括用于通过从单色光束分解光子将单色光束转换成光子对的非线性晶体(14),使得每个光子对显示出缠绕性质,其中该对中的一个光子指向 样品(16)和另一对光子不指向样品。 该系统包括一个电路(40),用于计算从样品反射的光子对的一个光子与光子对中的另一个光子之间的一个光子的重合,其中通过分析样品的重合和 从样品反射的光子对的光子之一和光子对的另一个光子之间的缠结性质。
    • 4. 发明申请
    • HIGH-FLUX ENTANGLED PHOTON GENERATION VIA PARAMETRIC PROCESSES IN A LASER CAVITY
    • 通过激光腔中的参数化过程产生高通量光电子
    • WO0245468A2
    • 2002-06-06
    • PCT/US0144889
    • 2001-11-30
    • UNIV BOSTONTRUSTEES BOSTON COLLEGEZEISS CARL JENA GMBHTEICH MALVIN CSALEH BAHAA E ASERGIENKO ALEXANDER VFOURKAS JOHN TWOLLESCHENSKY RALFKEMPE MICHAELBOOTH MARK C
    • TEICH MALVIN CSALEH BAHAA E ASERGIENKO ALEXANDER VFOURKAS JOHN TWOLLESCHENSKY RALFKEMPE MICHAELBOOTH MARK C
    • G02F1/39G02F1/37G06N99/00H01S3/081H01S3/108H01S3/109H05G2/00
    • G06N99/002B82Y10/00H01S3/0816H01S3/0817H01S3/1083H01S3/109H01S3/1095H04B10/70
    • The present invention relates to a novel and useful way of generating a strong source of doubly or multiply entangled photons. To generate a high flux of such photons we propose the use of a parametric process, or a set of simultaneous parametric processes, in conjunction with laser-type action and nonlinear optical processes in an optical cavity. This can be achieved via an optical-system configuration in which two, three or more processes take place simultaneously: the generation of light by stimulated emission or other means from an active medium in a cavity; the nonlinear-optical production of higher optical harmonics in the same or in a n auxiliary cavity; and the generation of spontaneous parametric downconversion in the same or in an auxiliary cavity. Laser action can be achieved via the usual stimulated-emission mechanisms associated with a pumped active medium in a cavity or, more generally, via schemes that produce laser light without population inversion by virtue of quantum-interference effects or other optical processes. The generation of high-flux entangled-photon beams can take the form of continuous wave (cw) or pulsed light, the latter can be achieved by means of any number of mechanisms including gain switching, cavity dumping, Q-switching, mode-locking, or any combination thereof. Parametrically downconverted radiation generated in the manner described above is expected to have novel, unusual, and useful statistical, entanglement, and hyperentanglement properties. It is expected to find use in a large number of applications, including new forms of optical measurements; new forms of optical spectroscopy; new forms of quantum imaging including entangled-photon microscopy, spectroscopy, and display; quantum information; as well as offering new ways of examining quantum paradoxes.
    • 本发明涉及一种产生双重或多重缠结光子的强源的新颖且有用的方法。 为了产生高通量的这种光子,我们提出使用参数化过程或一组同时的参数化过程,结合光学腔中的激光类型动作和非线性光学过程。 这可以通过其中两个,三个或更多个处理同时进行的光学系统配置来实现:通过受激发射或其它装置从空腔中的活性介质产生光; 在相同或在n个辅助腔中的非线性光学产生较高的光学谐波; 以及在相同或辅助腔中产生自发参数下变换。 可以通过与空腔中的泵浦有源介质相关联的通常的受激发射机制来实现激光作用,或者更一般地,通过由于量子干涉效应或其它光学过程产生激光而没有群体反转的方案。 高通量纠缠光子束的产生可以采取连续波(cw)或脉冲光的形式,后者可以通过任何数量的机制来实现,包括增益切换,腔体倾倒,Q开关,锁模 ,或其任何组合。 预期以上述方式产生的参数下变频辐射具有新颖的,不寻常的和有用的统计,纠缠和过度缠结特性。 预计可以在许多应用中使用,包括新形式的光学测量; 新形式的光谱; 量子成像的新形式包括纠缠光子显微镜,光谱和显示; 量子信息; 并提供了新的检验量子悖论的方法。