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1. 发明申请

US20090097862A1 Quantum Repeater 有权
标题翻译：量子中继器
公开(公告)号：US20090097862A1
公开(公告)日：2009-04-16
申请号：US11990421
申请日：2006-08-11
申请人： William J. Munro , kae Nemoto , Peter Van Loock , Yoshihisa Yamamoto
发明人： William J. Munro , kae Nemoto , Peter Van Loock , Yoshihisa Yamamoto
IPC分类号： H04B10/00
CPC分类号： G06N99/002 , B82Y10/00 , H04B10/291 , H04B10/70 , H04L9/0855
摘要： A quantum repeater includes a transmitter portion including a source, a set of matter systems, and an optical system. The source produces a probe pulse in a probe state having components with different photon numbers, and each matter system has at least one state that interacts with photons in the probe pulse to introduce a change in a phase space location of the probe state. The optical system can direct the probe pulse for interaction with one of the matter systems and direct light from the matter system for transmission on a first channel.
摘要翻译：量子转发器包括包括源，一组物质系统和光学系统的发射器部分。源产生具有不同光子数的分量的探针状态的探针脉冲，并且每个物质系统具有与探针脉冲中的光子相互作用的至少一种状态，以引入探针状态的相位空间位置的变化。光学系统可以引导探针脉冲用于与物质系统之一相互作用并且引导来自物质系统的光在第一通道上传输。

2. 发明授权

US08135276B2 Quantum repeater 有权
标题翻译：量子中继器
公开(公告)号：US08135276B2
公开(公告)日：2012-03-13
申请号：US11990421
申请日：2006-08-11
申请人： William J. Munro , Kae Nemoto , Peter Van Loock , Yoshihisa Yamamoto
发明人： William J. Munro , Kae Nemoto , Peter Van Loock , Yoshihisa Yamamoto
IPC分类号： H04K3/00
CPC分类号： G06N99/002 , B82Y10/00 , H04B10/291 , H04B10/70 , H04L9/0855
摘要： A quantum repeater includes a transmitter portion including a source, a set of matter systems, and an optical system. The source produces a probe pulse in a probe state having components with different photon numbers, and each matter system has at least one state that interacts with photons in the probe pulse to introduce a change in a phase space location of the probe state. The optical system can direct the probe pulse for interaction with one of the matter systems and direct light from the matter system for transmission on a first channel.
摘要翻译：量子转发器包括包括源，一组物质系统和光学系统的发射器部分。源产生具有不同光子数的分量的探针状态的探针脉冲，并且每个物质系统具有与探针脉冲中的光子相互作用的至少一种状态，以引入探针状态的相位空间位置的变化。光学系统可以引导探针脉冲用于与物质系统之一相互作用并且引导来自物质系统的光在第一通道上传输。

3. 发明授权

US07836007B2 Methods for preparing entangled quantum states 有权
标题翻译：制备纠缠量子态的方法
公开(公告)号：US07836007B2
公开(公告)日：2010-11-16
申请号：US11343639
申请日：2006-01-30
申请人： Raymond G. Beausoleil , William J. Munro , Timothy P. Spillar , Pieter Kok , Sean D. Barrett , Kae Nemoto
发明人： Raymond G. Beausoleil , William J. Munro , Timothy P. Spillar , Pieter Kok , Sean D. Barrett , Kae Nemoto
IPC分类号： G06F15/00 , G06F15/18
CPC分类号： B82Y10/00 , G06N99/002
摘要： Various embodiments of the present invention are directed to methods for generating an entangled state of qubits. In one embodiment of the present invention, a method for preparing an entangled state of qubits comprises providing a probe and N non-interacting qubits, each qubit comprises a linear superposition of two basis states. The probe is transmitted into an interaction region that separately couples the probe to each of the qubits and produces a number of different probes. A linear superposition of states is output from the interaction region, each state in the linear superposition of states comprises a tensor product of entangled basis states and one of the different probes. The linear superposition of states is projected into one of the entangled states by measuring the state of the probe.
摘要翻译：本发明的各种实施例涉及用于产生量子位的纠缠状态的方法。在本发明的一个实施例中，用于准备量子比特的纠缠状态的方法包括提供探测器和N个非相互作用的量子位，每个量子位包括两个基本状态的线性叠加。探针被传输到相互作用区域中，该区域将探针分别耦合到每个量子位并产生许多不同的探针。从交互区域输出状态的线性叠加，状态的线性叠加中的每个状态包括纠缠基状态的张量乘积和不同探针中的一个。通过测量探针的状态将状态的线性叠加投影到纠缠状态之一。

4. 发明授权

US07449672B2 Conversion of quantum information from one photonic representation to another photonic representation 有权
标题翻译：量子信息从一个光子表示转换到另一个光子表示
公开(公告)号：US07449672B2
公开(公告)日：2008-11-11
申请号：US10837129
申请日：2004-04-30
申请人： Raymond G. Beausoleil, Jr. , William J. Munro , Timothy P. Spiller , Kae Nemoto
发明人： Raymond G. Beausoleil, Jr. , William J. Munro , Timothy P. Spiller , Kae Nemoto
IPC分类号： H01J40/14
CPC分类号： G06N99/002 , B82Y10/00
摘要： Systems and methods convert or transfer quantum information from one photonic representation or state to another. This permits conversion of quantum information from one encoding to another and to representations that are convenient, efficient, or required for desired manipulations.
摘要翻译：系统和方法将量子信息从一个光子表示或状态转换或传输到另一个。这允许将量子信息从一个编码转换到另一个编码，以及对于期望的操作而言方便，有效或所需的表示。

5. 发明授权

US07002133B2 Detecting one or more photons from their interactions with probe photons in a matter system 有权
标题翻译：检测一个或多个光子与物质系统中与探针光子的相互作用
公开(公告)号：US07002133B2
公开(公告)日：2006-02-21
申请号：US10678437
申请日：2003-10-03
申请人： Raymond G. Beausoleil , William J. Munro , Timothy P. Spiller , Kae Nemoto , Sean D. Barrett
发明人： Raymond G. Beausoleil , William J. Munro , Timothy P. Spiller , Kae Nemoto , Sean D. Barrett
IPC分类号： H01L31/00
CPC分类号： G06N99/002 , B82Y10/00
摘要： A device capable of efficiently detecting a single-photon signal includes a matter system, sources of a first beam and a second beam, and a measurement system. The matter system has a first energy level and a second energy level such that a signal photon couples to a transition between the first energy level and the second energy level. The first beam contains photons that couple to a transition between the second energy level and a third energy level of the matter system, and the second beam contains photons that couple to a transition between the third energy level and a fourth energy level of the matter system. The measurement system measures a change in the first or second beam to detect the absence, the presence, or the number of the photons in the signal.
摘要翻译：能够有效地检测单光子信号的装置包括物质系统，第一光束和第二光束的源以及测量系统。物质系统具有第一能级和第二能级，使得信号光子耦合到第一能级和第二能级之间的转变。第一光束包含耦合到物质系统的第二能级与第三能级之间的转变的光子，而第二光束包含耦合到物质系统的第三能级与第四能级之间的跃迁的光子。测量系统测量第一或第二光束的变化，以检测信号中光子的不存在，存在或数量。

6. 发明授权

US08023828B2 Quantum information conversion between matter and light representations 有权
标题翻译：物质和光表示之间的量子信息转换
公开(公告)号：US08023828B2
公开(公告)日：2011-09-20
申请号：US11252964
申请日：2005-10-17
申请人： Raymond G. Beausoleil , William J. Munro , Timothy P. Spiller , Kae Nemoto
发明人： Raymond G. Beausoleil , William J. Munro , Timothy P. Spiller , Kae Nemoto
IPC分类号： H04B10/00 , G11C13/04
CPC分类号： B82Y10/00 , G06N99/002
摘要： Structures and methods allow: transfer of quantum information represented using the states of light to a representation using the states of matter systems; transfer of quantum information represented by the states of matter systems to a representation using the states of light; and error resistant encoding of quantum information using entangled states of matter and light to minimize errors.
摘要翻译：结构和方法允许：将使用光的状态表示的量子信息转移到使用物质系统状态的表示; 将由物质系统状态表示的量子信息转移到使用光的状态的表示; 并使用物质和光的纠缠状态对量子信息进行误差编码，以最小化误差。

7. 发明授权

US07791780B2 Quantum coherent systems and operations 失效
标题翻译：量子相干系统和操作
公开(公告)号：US07791780B2
公开(公告)日：2010-09-07
申请号：US11658427
申请日：2005-06-28
申请人： William J. Munro , Timothy P. Spiller , Kae Nemoto
发明人： William J. Munro , Timothy P. Spiller , Kae Nemoto
IPC分类号： G06E3/00 , G02F3/00
CPC分类号： G06N99/002 , B82Y10/00
摘要： Nonlinear elements can efficiently implement quantum information processing systems such as controlled phase shifters, non-absorbing detectors including parity detectors, quantum subspace projections, non-absorbing Bell state analyzers, non-absorbing encoders/entanglers, and fundamental quantum gates such as CNOT gates. The non-absorbing detectors permit improvements in the efficiency of a probabilistic quantum gate by permitting reuse of the same photonic resources during multiple passes through the probabilistic gate.
摘要翻译：非线性元件可以有效地实现量子信息处理系统，例如受控移相器，非吸收检测器，包括奇偶检测器，量子子空间投影，非吸收贝尔状态分析器，非吸收编码器/纠缠器，以及诸如CNOT门的基本量子门。非吸收检测器允许通过在多次通过概率门之间重复使用相同的光子资源来提高概率量子门的效率。

8. 发明申请

US20080310000A1 Quantum Coherent Systems and Operations 失效
标题翻译：量子相干系统和操作
公开(公告)号：US20080310000A1
公开(公告)日：2008-12-18
申请号：US11658427
申请日：2005-06-28
申请人： Raymond G. Beausoleil, JR. , William J. Munro , Timothy P. Spiller , Sean D. Barrett , Pieter Kok , Kae Nemoto
发明人： Raymond G. Beausoleil, JR. , William J. Munro , Timothy P. Spiller , Sean D. Barrett , Pieter Kok , Kae Nemoto
IPC分类号： G02F3/00 , G02F1/01
CPC分类号： G06N99/002 , B82Y10/00
摘要： Nonlinear elements can efficiently implement quantum information processing systems such as controlled phase shifters, non-absorbing detectors including parity detectors, quantum subspace projections, non-absorbing Bell state analyzers, non-absorbing encoders/entanglers, and fundamental quantum gates such as CNOT gates. The non-absorbing detectors permit improvements in the efficiency of a probabilistic quantum gate by permitting reuse of the same photonic resources during multiple passes through the probabilistic gate.
摘要翻译：非线性元件可以有效地实现量子信息处理系统，例如受控移相器，非吸收检测器，包括奇偶检测器，量子子空间投影，非吸收贝尔状态分析器，非吸收编码器/纠缠器，以及诸如CNOT门的基本量子门。非吸收检测器允许通过在多次通过概率门之间重复使用相同的光子资源来提高概率量子门的效率。

9. 发明授权

US07426444B2 Methods for determining relative phase differences in entangled quantum states 失效
标题翻译：确定纠缠量子态相对相位差的方法
公开(公告)号：US07426444B2
公开(公告)日：2008-09-16
申请号：US11407600
申请日：2006-04-19
申请人： Raymond G. Beausoleil , William J. Munro , Timothy P. Spiller , Pieter Kok , Sean D. Barrett , Kae Nemoto
发明人： Raymond G. Beausoleil , William J. Munro , Timothy P. Spiller , Pieter Kok , Sean D. Barrett , Kae Nemoto
IPC分类号： G01R13/00
CPC分类号： B82Y10/00 , G06N99/002
摘要： Various embodiments of the present invention are directed to methods for determining a phase shift acquired by an entangled N-qubit system represented by a NOON state. In one embodiment, a probe electromagnetic field is coupled with each qubit system. The phase shift acquired by the qubit systems is transferred to the probe electromagnetic field by transforming each qubit-system state into a linear superposition of qubit basis states. An intensity measurement is performed on the probe electromagnetic field in order to obtain a corresponding measurement result. A counter associated with a measurement-result interval is incremented, based on the measurement result falling within the measurement-result interval. A frequency distribution is produced by normalizing the counter associated with each measurement-result interval for a number of trials. The phase shift is determined by fitting a probability distribution associated with the probe electromagnetic field to the frequency distribution as a function of the phase shift.
摘要翻译：本发明的各种实施例涉及用于确定由NOON状态表示的纠缠的N量子比特系统获取的相移的方法。在一个实施例中，探测电磁场与每个量子位系统耦合。通过将每个量子位系统状态转换为量子位基状态的线性叠加，由量子位系统获取的相移被传送到探测电磁场。对探头电磁场进行强度测量，以获得相应的测量结果。基于测量结果间隔内的测量结果，与测量结果间隔相关联的计数器增加。通过对与多个试验的每个测量结果间隔相关联的计数器进行归一化来产生频率分布。通过将与探测电磁场相关联的概率分布拟合为频率分布来确定相移作为相移的函数。

10. 发明授权

US07133173B2 Nonlinear electromagnetic quantum information processing 有权
公开(公告)号：US07133173B2
公开(公告)日：2006-11-07
申请号：US10899332
申请日：2004-07-26
申请人： Raymond G. Beausoleil, Jr. , William J. Munro , Timothy P. Spiller , Sean D. Barrett , Pieter Kok , Kae Nemoto
发明人： Raymond G. Beausoleil, Jr. , William J. Munro , Timothy P. Spiller , Sean D. Barrett , Pieter Kok , Kae Nemoto
IPC分类号： G02F3/00
CPC分类号： G06N99/002 , B82Y10/00
摘要： Nonlinear electromagnetic elements can efficiently implement quantum information processing tasks such as controlled phase shifts, non-demolition state detection, quantum subspace projections, non-demolition Bell state analysis, heralded state preparation, quantum non-demolition encoding, and fundamental quantum gate operations. Direct use of electromagnetic non-linearity can amplify small phase shifts and use feed forward systems in a near deterministic manner with high operating efficiency. Measurements using homodyne detectors can cause near deterministic projection of input states on a Hilbert subspace identified by the measurement results. Feed forward operation can then alter the projected state if desired to achieve a desired output state with near 100% efficiency.

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