公开(公告)号：US11451204B2

公开(公告)日：2022-09-20

申请号：US16796871

申请日：2020-02-20

Applicant: RAYTHEON BBN TECHNOLOGIES CORP.

Inventor： Kin Chung Fong ,  Guilhem Ribeill ,  Luke Colin Gene Govia ,  Martin Gustafsson ,  Thomas A. Ohki

IPC: H03F19/00 ,  H01L39/22

Abstract: An amplifier. In some embodiments, the amplifier includes a resonant circuit having a resonant frequency, a pump input, a signal input, and a signal output. The resonant circuit may include a Josephson junction connected to the pump input, the Josephson junction being a superconducting-normal-superconducting junction having two superconducting terminals and being configured to adjust the resonant frequency of the resonant circuit based on a signal received at the pump input.

公开(公告)号：US20210150402A1

公开(公告)日：2021-05-20

申请号：US17025374

申请日：2020-09-18

Applicant: RAYTHEON BBN TECHNOLOGIES CORP. ,  MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： Benjamin Lienhard ,  William D. Oliver ,  Simon Gustavsson ,  Antti Pekka Vepsalainen ,  Terry Philip Orlando ,  Luke Colin Gene Govia ,  Hari Kiran Krovi ,  Thomas Ohki

IPC: G06N10/00 ,  G06N3/08 ,  G06K9/62

Abstract: Techniques for machine learning assisted qubit state readout are disclosed. A system a set of training data that describes states of multiple qubits, and trains a neural network to determine qubit states based on the set of training data. The system obtains one or more unlabeled qubit signals, and determines one or more states corresponding to the unlabeled qubit signal(s), using the neural network. The unlabeled qubit signal(s) may include one or more multiplexed qubit signals, and the state(s) corresponding to the unlabeled qubit signal(s) may include one or more multi-qubit states based on the multiplexed qubit signal(s).

公开(公告)号：US20200274507A1

公开(公告)日：2020-08-27

申请号：US16796871

申请日：2020-02-20

Applicant: RAYTHEON BBN TECHNOLOGIES CORP.

Inventor： Kin Chung Fong ,  Guilhem Ribeill ,  Luke Colin Gene Govia ,  Martin Gustafsson ,  Thomas A. Ohki

IPC: H03F19/00 ,  H01L39/22

Abstract: An amplifier. In some embodiments, the amplifier includes a resonant circuit having a resonant frequency, a pump input, a signal input, and a signal output. The resonant circuit may include a Josephson junction connected to the pump input, the Josephson junction being a superconducting-normal-superconducting junction having two superconducting terminals and being configured to adjust the resonant frequency of the resonant circuit based on a signal received at the pump input.

公开(公告)号：US10817797B1

公开(公告)日：2020-10-27

申请号：US16679126

申请日：2019-11-08

Applicant: RAYTHEON BBN TECHNOLOGIES CORP.

Inventor： Luke Colin Gene Govia ,  Hari Kiran Krovi

IPC: G06N10/00 ,  G06F9/38 ,  H03K19/195

Abstract: A method for characterizing an N-qubit process, for N an integer greater than 1. In some embodiments, the method includes performing a plurality of characterization measurements of the N-qubit process to form a plurality of process maps, and fitting the plurality of process maps with a composition of K-qubit processes, K being an integer greater than 1 and less than N.