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Superconducting quantum calculation system and quantum bit control method

A technology of superconducting bits and superconducting quantum, applied in the field of computer

Pending Publication Date: 2022-02-08
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the existing commercial computer can only calculate the pulse optimization problem of the calculation system of about 13Qubit

Method used

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  • Superconducting quantum calculation system and quantum bit control method
  • Superconducting quantum calculation system and quantum bit control method
  • Superconducting quantum calculation system and quantum bit control method

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Embodiment Construction

[0140] The technical solution in this application will be described below with reference to the accompanying drawings.

[0141] First, a brief introduction is given to related concepts and technologies involved in the embodiments of the present application.

[0142] 1. Qubit, which can also be called superconducting qubit (superconducting Qubit), superconducting bit, can be regarded as an LC oscillation circuit containing nonlinear inductance, and its core component can be a nonlinear inductor composed of a Josephson structure. Qubits can be coupled (also referred to as "connected") through capacitors, cavities, couplers, or other means, so that adjacent Qubits can interact.

[0143] figure 1 (a) shows a schematic diagram of a Qubit, and (b) shows a schematic diagram of a Qubit connected through a capacitor. Among them, in (a) figure, Ic represents the inductance in the Josephson junction, and C represents the capacitance in the Josephson junction. In figure (b), L 1 and C...

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Abstract

The invention provides a superconducting quantum calculation system and a quantum bit manipulation method. The system comprises a control circuit and a superconducting quantum chip, the superconducting quantum chip comprises at least two communication regions and a first central exchange region, and each communication region comprises a first suspension superconducting bit and at least one first superconducting bit; the first central exchange area comprises first suspended superconducting bits and is used for transmitting quantum operation among the superconducting bits in different communication areas; and the control circuit is used for controlling the coupling strength of the first suspension superconducting bit and the first superconducting bit. Therefore, by controlling the coupling strength between the first suspension superconducting bits and the first superconducting bits, a single communication region or a central exchange region can be isolated, so that sub-spaces are effectively segmented, and two-bit gate control between different communication regions can be transited through the central exchange region; therefore, various quantum control required by general quantum calculation can be realized on a large-scale superconducting quantum calculation chip.

Description

technical field [0001] The present application relates to the field of computers, and more specifically, to a superconducting quantum computing system and a qubit manipulation method. Background technique [0002] Quantum computing can not only be used to study the basic problems of quantum mechanics, but also has the potential to solve specific problems, which has attracted extensive attention of researchers in recent years. Among various quantum computing schemes, superconducting quantum computing has become one of the most promising ways to realize quantum computing due to its advantages of easy manipulation and expansion. Superconducting quantum computing is a quantum computing solution based on superconducting circuits, and its core device is a superconducting Josephson junction. Superconducting quantum circuits have high compatibility with existing integrated circuit technology in terms of design, preparation and measurement. The energy level and coupling of qubits ca...

Claims

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Application Information

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IPC IPC(8): G06N10/20
CPCG06N10/00G06N10/20G06N10/40
Inventor 潘健赵鹏
Owner HUAWEI TECH CO LTD
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