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    COMPENSATED MICROWAVE DRIVEN QUBITS
    63.
    发明公开
    COMPENSATED MICROWAVE DRIVEN QUBITS 审中-公开

    公开(公告)号：EP4044075A1

    公开(公告)日：2022-08-17

    申请号：EP21156758.1

    申请日：2021-02-12

    申请人： Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO ,  Technische Universiteit Delft

    发明人： SAMKHARADZE, Nodar ,  XUE, Xiao

    IPC分类号： G06N10/00

    摘要： A method and system for driving a set of qubits (Q1,Q2). A first qubit (Q1) is provided with a first driving frequency (F1) and a second qubit (Q2) is provided with a second driving frequency (F2). Each qubit (Q1,Q2) is provided with a separate microwave gate (G1,G2) configured to apply a respective microwave signal (W1, W2). A first electrical signal (E1) comprising the first driving frequency (F1) is applied to the first microwave gate (G1) for driving the first qubit (Q1). Simultaneously a second electrical signal (E2) is applied to the second microwave gate (G2) comprising the first driving frequency (F1) shifted in phase with respect to the first electrical signal (E1) for generating the second microwave signal (W2) with the first driving frequency (F1) arriving at the second qubit (Q2) in counterphase to first microwave signal (W1). This may at least partially compensate crosstalk.

    METHOD FOR SYNTHESIZING A PRODUCT OF PAULI ROTATIONS
    66.
    发明公开
    METHOD FOR SYNTHESIZING A PRODUCT OF PAULI ROTATIONS 审中-公开

    公开(公告)号：EP4030356A1

    公开(公告)日：2022-07-20

    申请号：EP21151664.6

    申请日：2021-01-14

    申请人： Bull SAS

    发明人： MARTIEL, Simon ,  GOUBAULT DE BRUGIÈRE, Timothée

    IPC分类号： G06N10/00

    摘要： A method for synthesizing a product of Pauli rotations, wherein said product of Pauli rotations comprises at least two different types of X, Y and/or Z n-qubits Pauli rotations and identities, where the method comprises:
    • providing a table of p number of rows and m number of columns, where p is a number of qubits and m a number of rotations, each column describing one Pauli rotation and each row describing a qubit,
    the method performing iteratively, until the table is empty:
    ∘ a step of simulating conjugations of at least one pair of rows by simulating the insertion of a predetermined type of quantum gates on their respective qubit in order to bring one of the X, Y or Z entry of at least one column to an identity entry,
    ∘ for each simulation, a step of counting the number of identity entries that appeared,
    ∘ a step of associating a score to each simulation, where the higher score corresponds to the simulation bringing the most identity entries in the associated column, and
    ∘ a step of performing one conjugation, the conjugation having the higher associated score,

    a step of rewriting the table according to the result of the conjugation, by replacing the X, Y and/or Z entries of the column by an identity entry and by removing the columns containing only one X, Y or Z entry, the other entries of the columns being identity entries.