公开(公告)号：US20110175062A1

公开(公告)日：2011-07-21

申请号：US13026339

申请日：2011-02-14

Applicant: Matthew J. Farinelli ,  George A. Keefe ,  Shwetank Kumar ,  Matthias Steffen

Inventor： Matthew J. Farinelli ,  George A. Keefe ,  Shwetank Kumar ,  Matthias Steffen

IPC: H01L39/22

CPC classification number: G06N99/002 ,  B82Y10/00

Abstract: A method for determining whether a quantum system comprising a superconducting qubit is occupying a first basis state or a second basis state once a measurement is performed is provided. The method, comprising: applying a signal having a frequency through a transmission line coupled to the superconducting qubit characterized by two distinct, separate, and stable states of differing resonance frequencies each corresponding to the occupation of the first or second basis state prior to measurement; and measuring at least one of an output power or phase at an output port of the transmission line, wherein the measured output power or phase is indicative of whether the superconducting qubit is occupying the first basis state or the second basis state.

Abstract translation: 提供了一旦确定包括超导量子位的量子系统是否在执行测量时占据第一基础状态或第二基础状态的方法。 该方法包括：通过耦合到超导量子位的传输线施加具有频率的信号，其特征在于两个不同的，独立的和稳定的不同共振频率的状态，每个共振频率对应于在测量之前占用第一或第二基准状态; 并且测量所述传输线的输出端口处的输出功率或相位中的至少一个，其中所述测量的输出功率或相位指示所述超导量子位是否占据所述第一基准状态或所述第二基准状态。

公开(公告)号：US07889992B1

公开(公告)日：2011-02-15

申请号：US12563183

申请日：2009-09-21

Applicant: David P. DiVincenzo ,  Philip C. D. Hobbs ,  Shwetank Kumar

Inventor： David P. DiVincenzo ,  Philip C. D. Hobbs ,  Shwetank Kumar

IPC: H04B10/16

CPC classification number: G06N99/002 ,  B82Y10/00

Abstract: A hybrid superconductor-optical quantum repeater is provided. The hybrid superconductor-optical quantum repeater comprises an optical subsystem configured to receive an optical signal via an optical channel and a superconductor subsystem coupled to the optical subsystem. The optical subsystem and superconductor subsystem are coupled to one another via a microwave transmission medium. The optical subsystem is configured to receive an optical signal via the optical channel and down-convert a photon of the optical signal to a microwave photon in a microwave output signal that is output to the superconductor subsystem via the microwave transmission medium. The superconductor subsystem stores a quantum state of the microwave photon and transmits the microwave photon along an output channel from the superconductor subsystem.

Abstract translation: 提供了一种混合超导体光量子中继器。 混合超导体光量子转发器包括被配置为经由光学信道接收光学信号的光学子系统和耦合到光学子系统的超导体子系统。 光学子系统和超导体子系统通过微波传输介质相互耦合。 光学子系统经配置以通过光通道接收光信号，并将微信号的光信号经微波传输介质输出到超导体子系统的微波输出信号中，将光信号下转换成微波光子。 超导体子系统存储微波光子的量子态，并从超导体子系统沿着输出通道传输微波光子。

公开(公告)号：US20110012619A1

公开(公告)日：2011-01-20

申请号：US12502640

申请日：2009-07-14

Applicant: Mark B. Ketchen ,  Shwetank Kumar ,  Matthias Steffen

Inventor： Mark B. Ketchen ,  Shwetank Kumar ,  Matthias Steffen

IPC: G01R27/04 ,  G21C17/00

CPC classification number: G01R31/2637 ,  G01R27/2688

Abstract: An apparatus for measuring component performance including a feed line having an input port and an output port, a first resonator connected to the feed line, and a first Josephson junction device connected to the first resonator and to ground.

Abstract translation: 一种用于测量部件性能的装置，包括具有输入端口和输出端口的馈线，连接到馈线的第一谐振器和连接到第一谐振器并接地的第一约瑟夫逊结器件。