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公开(公告)号：US07719736B2
公开(公告)日：2010-05-18
申请号：US10577799
申请日：2004-10-27
CPC分类号： G06N99/002 , B82Y10/00 , H04L9/0858 , H04L2209/805
摘要： In the field of optical quantum information processing, manipulation of single photon qubits in frequency modes employs a frequency beamsplitter employs an asymmetric two-path interferometer, reversible down to the quantum limit. A first partially transmitting mirror splits photons into first and second paths. A time delay element introduces a differential time delay into the second path. And a second partially transmitting mirror mixes the two paths again to form two outputs. A half-wave plate utilizes two of the beam splitters.
摘要翻译： 在光量子信息处理领域中，频率模式中单光子量子位的操纵采用频率分束器，采用非对称双路干涉仪，可逆向量子极限。 第一部分透射镜将光子分解成第一和第二路径。 时间延迟元件将差分时间延迟引入第二路径。 并且第二部分透射镜再次混合两个路径以形成两个输出。 半波片使用两个分束器。
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公开(公告)号：US07173272B2
公开(公告)日：2007-02-06
申请号：US10487024
申请日：2002-08-20
IPC分类号： H01L29/06
CPC分类号： G06N99/002 , B82Y10/00 , H04L9/0858
摘要： A nondeterministic quantum CNOT gate (10) for photon qubits, with success probability 1/9, uses beamsplitters (B1–B5) with selected reflectivities to mix control and target input modes. It may be combined with an atomic quantum memory to construct a deterministic CNOT gate, with applications in quantum computing and as a Bell-state analyser.
摘要翻译： 用于光子量子位的非确定量子CNOT门（10）具有成功概率1/9，使用具有选定反射率的分束器（B 1 -B 5）来混合控制和目标输入模式。 它可以与原子量子存储器组合以构建确定性的CNOT门，其应用在量子计算中并且作为贝尔状态分析器。
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公开(公告)号：US07346246B2
公开(公告)日：2008-03-18
申请号：US10487980
申请日：2002-08-28
CPC分类号： G06N99/002 , B82Y10/00
摘要： A method and apparatus for quantum information processing is disclosed in which logical qubits |0>L and |1>L are respectively encoded by different near orthogonal coherent states |β> and |α>, where =0, |α> and |β> being the computational basis states for the qubits, for example, in which logical qubits |0>L and |1>L are respectively encoded by different ones of the vacuum state |0> and a multi-photon optical coherent state |α> which states are the computational basis states for the qubits. This provide an efficient scheme for linear optics quantum processing which is deterministic and for which qubit readout can use homodyne detection which is highly efficient. The invention finds application in quantum computation and quantum communication.
摘要翻译： 公开了一种用于量子信息处理的方法和装置，其中逻辑量子位L 1和L 2分别由不同的近正交相干态|β>和/ |α，其中αα= 0，|α3和|β2是量子位的计算基础状态，例如，其中逻辑量子位| 0> L 1和| 1 分别由不同的真空状态| 0>和多光子光学相干状态|α编码，它们是量子位的计算基础状态。 这为线性光学量子处理提供了一种有效的方案，它是确定性的，并且量子位读数可以使用高效率的零差检测。 本发明适用于量子计算和量子通信。
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