公开(公告)号：US09436061B2

公开(公告)日：2016-09-06

申请号：US13563899

申请日：2012-08-01

申请人： Satoshi Nakamura ,  Hayato Goto ,  Mamiko Kujiraoka ,  Kouichi Ichimura

发明人： Satoshi Nakamura ,  Hayato Goto ,  Mamiko Kujiraoka ,  Kouichi Ichimura

IPC分类号： G02F1/11 ,  G02F1/33

CPC分类号： G02F1/33 ,  G02F1/11 ,  G02F2201/56

摘要： According to one embodiment, an acousto-optic modulator includes an acousto-optic medium and a piezoelectric transducer. The acousto-optic medium has a configuration of a hexahedron. The acousto-optic medium has surfaces D, E, F, G and H. The piezoelectric transducer is provided on a surface C of the acousto-optic medium. The surface D opposes the surface C and has respective four sides shared by the surfaces E, F, G and H. Four angles defined between the surface D and the surfaces E, F, G and H each is other than 90°. At least one of eight angles defined between each pair of the surfaces C, E, F, G and H is other than 90°. The each pair has one shared side.

摘要翻译： 根据一个实施例，声光调制器包括声光介质和压电换能器。 声光介质具有六面体的构造。 声光介质具有表面D，E，F，G和H.压电换能器设置在声光介质的表面C上。 表面D与表面C相对，并且具有由表面E，F，G和H共享的相应的四个面。表面D和表面E，F，G和H之间限定的四个角度不同于90°。 在每对表面C，E，F，G和H之间限定的八个角度中的至少一个不超过90°。 每对都有一个共享的一面。

公开(公告)号：US08488232B2

公开(公告)日：2013-07-16

申请号：US13050628

申请日：2011-03-17

申请人： Satoshi Nakamura ,  Kouichi Ichimura ,  Hayato Goto

发明人： Satoshi Nakamura ,  Kouichi Ichimura ,  Hayato Goto

IPC分类号： G06N99/00 ,  B82Y10/00 ,  B82Y20/00 ,  B82B1/00

CPC分类号： G06N99/002 ,  B82B1/00 ,  B82Y10/00 ,  B82Y20/00 ,  Y10S977/933

摘要： An operating method for stimulated Raman adiabatic passage to change probability amplitude in a three-level system including states of |0>, |1> and |e>, includes the following two steps. One is to direct a first laser beam and a second laser beam which have frequencies in the vicinity of resonance frequencies corresponding to energy differences between |0> and |e> and between |1> and |e>, respectively. The other is to change temporally two-photon detuning to be a difference between first detuning and second detuning. The first detuning is a difference between a first energy difference and a frequency of the first laser beam. The first energy difference is a difference between energy of |0> and energy of |e>. The second detuning is a difference between a second energy difference and a frequency of the second laser beam. The second energy difference is a difference between energy of |1> and energy of |e>.

摘要翻译： 用于改变包括| 0>，| 1>和| e>状态的三级系统中的概率幅度的受激拉曼绝热通道的操作方法包括以下两个步骤。 一个是分别引导第一激光束和第二激光束，该激光束和第二激光束在谐振频率附近分别对应于| 0>和| e>之间的能量差和在| 1>和| e>之间。 另一种是将时间上的双光子失谐改变为第一失谐和第二失谐之间的差异。 第一失谐是第一能量差和第一激光束的频率之间的差。 第一个能量差是| 0的能量与| e>的能量之间的差。 第二失谐是第二能量差和第二激光束的频率之间的差。 第二能量差是| 1的能量与| e>的能量之间的差。

公开(公告)号：US08054072B2

公开(公告)日：2011-11-08

申请号：US12543828

申请日：2009-08-19

申请人： Kouichi Ichimura ,  Hayato Goto

发明人： Kouichi Ichimura ,  Hayato Goto

IPC分类号： G02B27/42 ,  H01L29/15

CPC分类号： G06N99/002 ,  B82Y10/00

摘要： A quantum computer includes a unit including thin films A, B and C each containing a physical-system group A, B and C formed of physical systems A, B and C, the films A, B and C being alternately stacked in an order of A, B, C, A, . . . , each of the systems A, B and C having three-different-energy states |0>x, |1>x , |e>x, a quantum bit being expressed by a quantum-mechanical-superposition state of |0>x and |1>x , a light source generating light beams having angular frequencies ωA(E), ye, g, ωA(E), ye, e, ωx, ye, gg, ωx, ye, ge, ωx, ye, eg and ωx, ye, ee, ωA(E), ye, g, a unit controlling frequencies and intensities of the beams, and a unit measuring intensity of light emitted from or transmitted through physical-system group A(E) contained in a lowest one of the thin films A to detect a quantum state of the group A(E).

摘要翻译： 量子计算机包括包括薄膜A，B和C的单元，每个单元包含由物理系统A，B和C形成的物理系统组A，B和C，薄膜A，B和C按照 A，B，C，A，。 。 。 ，具有三个不同能态的系统A，B和C中的每个具有| 0> x，| 1> x，| e> x，量子比特由| 0> x的量子力学叠加状态 （E），ye，e，ωx，ye，gg，ωx，ye，ge，ωx，ye等的角度频率ωA（E），ye，g，ωA 和ωx，ye，ee，ωA（E），ye，g，控制波束的频率和强度的单位，以及测量从或包含在最低的物理系统组A（E）中发射或透射的光的单位的单位 检测A组（E）的量子态的薄膜A之一。

公开(公告)号：US20080192315A1

公开(公告)日：2008-08-14

申请号：US12028912

申请日：2008-02-11

申请人： Hayato Goto ,  Kouichi Ichimura

发明人： Hayato Goto ,  Kouichi Ichimura

IPC分类号： G06E3/00

CPC分类号： B82Y10/00 ,  G06N99/002

摘要： A quantum computer includes: N (where N is an integer of at least 2) physical systems having five states |0>, |1>, |2>, |3> and |4> in which transitions between three lower states |0>, |1> and |2> and two upper states |3> and |4> are optically allowed; and an optical resonator in which the N physical systems are disposed. A transition frequency of a transition between |2> and |3> in all physical systems is equal to a resonant frequency of the optical resonator, a distribution width of a transition frequency between |3> and |4> is at least N times greater than a maximum value of transition frequencies between the three lower states, and light which is resonant with a transition between |0> and |4>, between |1> and |4>, or between |2> and |4> in a certain physical system is sufficiently off-resonant with all optical transitions in other physical systems.

摘要翻译： 量子计算机包括：N（其中N是至少为2的整数）具有五个状态| 0>，| 1>，| 2>，| 3>和| 4的物理系统，其中三个较低状态之间的转换| 0 >，| 1>和| 2>和两个上部状态| 3>和| 4>是光学上允许的; 以及配置N个物理系统的光谐振器。 在所有物理系统中，| 2>和| 3>之间的转换的转换频率等于光谐振器的谐振频率，| 3>和| 4>之间的转换频率的分布宽度至少为N倍 比在三个较低状态之间的过渡频率的最大值以及在| 1>和| 4>之间或在| 2>和| 4>之间的| 0>和| 4>之间的转变共振的光 某些物理系统与其他物理系统中的所有光学转换充分脱谐。

公开(公告)号：US07126106B2

公开(公告)日：2006-10-24

申请号：US11235192

申请日：2005-09-27

申请人： Hayato Goto ,  Kouichi Ichimura

发明人： Hayato Goto ,  Kouichi Ichimura

IPC分类号： G02F1/01 ,  G02F3/00 ,  G01J1/44 ,  G06E3/00

CPC分类号： B82Y10/00 ,  G06N99/002

摘要： Quantum computer includes optical systems arranged in series each of the plurality of optical systems includes first half-wave plate, first polarizing beam splitter, first switching mirror, first photodetector, first polarization rotator, optical cavity which contains atom, second switching mirror, second photodetector, second polarization rotator, and high reflection mirror, first polarization beam splitter outputting third light beam received from first switching mirror or second switching mirror to adjacent one of optical systems, third switching mirrors each provided between adjacent two optical systems, each of third switching mirrors reflecting or transmitting light beam output from one of two optical systems, light sources each providing light beam to corresponding optical system, and measurement system which measures polarization of incoming light beam.

摘要翻译： 量子计算机包括串联布置的光学系统，每个光学系统包括第一半波片，第一偏振分束器，第一切换镜，第一光电检测器，第一偏振旋转器，包含原子的光腔，第二切换镜，第二光电检测器 第二偏振旋转器和高反射镜，第一偏振分束器将从第一切换镜或第二切换镜接收的第三光束输出到相邻的光学系统之一，每个设置在相邻的两个光学系统之间的第三切换镜，每个第三切换镜 反射或发射从两个光学系统之一输出的光束，每个向对应的光学系统提供光束的光源和测量入射光束的偏振的测量系统。

公开(公告)号：US08386899B2

公开(公告)日：2013-02-26

申请号：US12731277

申请日：2010-03-25

申请人： Hayato Goto ,  Kouichi Ichimura

发明人： Hayato Goto ,  Kouichi Ichimura

IPC分类号： G06F11/00 ,  G06F15/00

CPC分类号： H03M13/19 ,  B82Y10/00 ,  G06N99/002 ,  H04L9/0858

摘要： In an operation of two qubit gate having failure information related to success or failure, by using a code to concatenate N-error-correcting code transversally executing a Pauli gate, a Hadamard gate and a CNOT gate, an error-correction is executed by an error-correcting teleportation, and the CNOT gate is executed to an encoded qubit by the error-correcting teleportation. In Bell measurement of the error-correcting teleportation, when a measurement result of non-encoded qubit is processed, by suitably defining failure information of the encoded qubit of level (l+1) from the failure information of encoded qubits of level l, the measurement result of the encoded qubit of each level is determined, and the failure information of the encoded qubit of each level is defined. As a result, a measurement result of a logical qubit as the encoded qubit of the highest level is determined.

摘要翻译： 在具有与成功或失败相关的故障信息的两个量子位门的操作中，通过使用横向执行Pauli门，Hadamard门和CNOT门的N个错误校正码的代码来进行纠错，由 错误纠正传送，通过纠错传送将CNOT门执行到编码的量子位。 在纠错传送的贝尔测量中，当处理非编码量子位的测量结果时，通过从层次l的编码量子位的故障信息适当地定义级（l + 1）的编码量子位的故障信息， 确定每个级别的编码量子位的测量结果，并且定义每个级别的编码量子位的故障信息。 结果，确定作为最高电平的编码量子位的逻辑量子位的测量结果。

公开(公告)号：US20120170091A1

公开(公告)日：2012-07-05

申请号：US13417881

申请日：2012-03-12

申请人： Hayato GOTO ,  Satoshi Mitsugi ,  Kouichi Ichimura

发明人： Hayato GOTO ,  Satoshi Mitsugi ,  Kouichi Ichimura

IPC分类号： G06E3/00

CPC分类号： G06N99/002 ,  B82Y10/00

摘要： According to one embodiment, a quantum computer includes a crystal, an optical resonator, and a light source. A host crystal included in the crystal satisfying three conditions a first condition that maximum phonon energy of the host crystal is low, and so that a homogenous broadening of a 3F3(1) level of the Pr3+ ion resulting from relaxation due to phonon emission is smaller than respective hyperfine splits of a 3H4(1) level and the 3F3(1) level of the Pr3+ ion, a second condition that a site of the Pr3+ ion does not have inversion symmetry, and the Pr3+ ion has a Stark level in which the 3H4(1) level and the 3F3(1) level of the Pr3+ ion are not degenerate, and a third condition that each atom in the host crystal has no electronic magnetic moment.

摘要翻译： 根据一个实施例，量子计算机包括晶体，光学谐振器和光源。 包含在满足三个条件的晶体中的主晶体是主晶体的最大声子能量低的第一条件，并且由于由于声子发射而产生的松弛导致的Pr 3+离子的3F 3（1）水平的均匀扩展较小 比3 H4（1）级的超细分裂和Pr3 +离子的3F3（1）级别，Pr3 +离子的位置不具有反转对称性的第二条件，并且Pr3 +离子具有斯塔克级别，其中 3H4（1）水平和Pr3 +离子的3F3（1）水平不退化，而主体晶体中的每个原子没有电子磁矩的第三个条件。

公开(公告)号：US08106717B2

公开(公告)日：2012-01-31

申请号：US12561532

申请日：2009-09-17

申请人： Kouichi Ichimura ,  Hayato Goto

发明人： Kouichi Ichimura ,  Hayato Goto

IPC分类号： H01S1/00 ,  H03L7/26

CPC分类号： G06N99/002 ,  B82Y10/00 ,  Y10S977/933

摘要： A method includes causing a common-resonator mode resonating with a transition between |2>i and |3>i that are coupled to each other by a transition having a homogenous broadening ΔEhomo greater than an energy difference between |0>i and |1>i, an energy difference between |2>i and |3>i being greater than ΔEhomo, transferring states of m quantum bits represented by |0>k and |1>k to |4>k and |5>k, respectively, when a quantum-bit-gate operation using the common-resonator mode is executed between the quantum bits represented by m physical systems k, |E(|u>k)−E(|v>k)|>ΔEhomo, u, vε{2, 3, 4, 5}, u≠v, executing adiabatic passage between the physical systems k, using light that resonates with a transition between |3>k and |4>k and a transition between |3>k and |5>k, executing the quantum-bit-gate operation between the quantum bits, and transferring, to |0>k and |1>k, the states represented by |4>k and |5>k, respectively.

摘要翻译： 一种方法包括使共振谐振器模式与在| 2> i和| 3> i之间的转变共振，该转换通过具有大于... 0的能量差的均匀扩展＆Dgr; Ehomo的转变彼此耦合 | 1> i> | i> | 3> i之间的能量差大于＆Dgr; Ehomo，将由| 0> k和| 1> k表示的m个量子比特的状态转移到| 4> k和| 5 当使用由m个物理系统k，| E（| u> k）-E（| v> k）|>表示的量子位之间执行使用公共谐振器模式的量子比特栅极操作时， ＆Dgr; Ehomo，u，v＆e; {2,3,4,5}，≠v，使用与3> k和| 4> k之间的过渡共振的光进行物理系统k之间的绝热通道， 在| 3> k和| 5> k之间的转换，执行量子比特之间的量子位选择器操作，并且传送到| 0 k和| 1 k，由| 4> k和| 5表示的状态 > k。

公开(公告)号：US20100251049A1

公开(公告)日：2010-09-30

申请号：US12731277

申请日：2010-03-25

申请人： Hayato Goto ,  Kouichi Ichimura

发明人： Hayato Goto ,  Kouichi Ichimura

IPC分类号： H03M13/03 ,  G06F11/10

CPC分类号： H03M13/19 ,  B82Y10/00 ,  G06N99/002 ,  H04L9/0858

摘要： In an operation of two qubit gate having failure information related to success or failure, by using a code to concatenate N-error-correcting code transversally executing a Pauli gate, a Hadamard gate and a CNOT gate, an error-correction is executed by an error-correcting teleportation, and the CNOT gate is executed to an encoded qubit by the error-correcting teleportation. In Bell measurement of the error-correcting teleportation, when a measurement result of non-encoded qubit is processed, by suitably defining failure information of the encoded qubit of level (l+1) from the failure information of encoded qubits of level l, the measurement result of the encoded qubit of each level is determined, and the failure information of the encoded qubit of each level is defined. As a result, a measurement result of a logical qubit as the encoded qubit of the highest level is determined.

摘要翻译： 在具有与成功或失败相关的故障信息的两个量子位门的操作中，通过使用横向执行Pauli门，Hadamard门和CNOT门的N个错误校正码的代码来进行纠错，由 错误纠正传送，通过纠错传送将CNOT门执行到编码的量子位。 在纠错传送的贝尔测量中，当处理非编码量子位的测量结果时，通过从层次l的编码量子位的故障信息适当地定义级（l + 1）的编码量子位的故障信息， 确定每个级别的编码量子位的测量结果，并且定义每个级别的编码量子位的故障信息。 结果，确定作为最高电平的编码量子位的逻辑量子位的测量结果。

公开(公告)号：US07791052B2

公开(公告)日：2010-09-07

申请号：US12211962

申请日：2008-09-17

申请人： Kouichi Ichimura ,  Hayato Goto

发明人： Kouichi Ichimura ,  Hayato Goto

IPC分类号： G21G4/00

CPC分类号： B82Y10/00 ,  G06N99/002

摘要： A method of generating a single photon, includes preparing an optical resonator including a resonator mode of a resonance angular frequency ωc, preparing a material contained in the optical resonator, including a low energy state |g> and a high energy state |e>, and including a transition angular frequency ωa between |g>−|e> that is varied by an external field, applying, to the material, light of an angular frequency ωl different from the resonance angular frequency ωc, and applying a first external field to the material to vary the transition angular frequency ωa to resonate with the angular frequency ωl, such that a state of the material is changed to |e>, and then applying a second external field to the material to vary the transition angular frequency ωa to resonate with the resonance angular frequency ωc, such that the state of the material is restored to |g>.

摘要翻译： 一种产生单个光子的方法包括制备包括谐振角频率ωc的谐振器模式的光学谐振器，制备包含在包含低能态| g>和高能状态的光谐振器中的材料， 并且包括由外部场变化的| g> - | e>之间的过渡角频率ωa，将与谐振角频率ωc不同的角频率ω1的光施加到材料，并将第一外场施加到 改变过渡角频率ωa以与角频率ω1谐振的材料，使得材料的状态变为| e>，然后向材料施加第二外部场以改变转变角频率ωa以使其共振 谐振角频率ωc，使得材料的状态恢复到| g>。