A long-life storage device and storage method for superconducting qubits

A technology for superconducting quantum and storage devices, which can be applied in quantum computers, computing, instruments, etc., and can solve the problems of large microwave loss and small quality factor.

A technology for superconducting quantum and storage devices, which can be applied in quantum computers, computing, instruments, etc., and can solve the problems of large microwave loss and small quality factor.

CN110288092BActive Publication Date: 2021-02-26PEKING UNIV
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  • A long-life storage device and storage method for superconducting qubits
  • A long-life storage device and storage method for superconducting qubits

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Embodiment Construction

[0039] The present invention will be further elaborated below through specific embodiments in conjunction with the accompanying drawings.

[0040] Such as figure 1 As shown, the long-life storage device of the superconducting qubit of the present embodiment includes: a three-dimensional ellipsoidal radio frequency superconducting film cavity 1, a pipeline 2, a sealing plate 3, an installation medium 4 and a coupling antenna 5; wherein, two identical The half-bowl ellipsoids are welded together to form an ellipsoid cavity. The inside of the ellipsoid cavity is in the shape of an ellipsoid. A through hole is opened on the ellipsoid cavity. The through hole is located on the central axis perpendicular to the equator plane of the ellipsoid cavity. A pipe 2 is installed at the through hole, and the pipe 2 is located outside the ellipsoid cavity and is perpendicular to the equatorial plane of the ellipsoid cavity. The port of the pipe 2 is sealed by a sealing plate 3, and vapor depo...

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Abstract

The invention discloses a superconducting qubit long-life storage device and a storage method thereof. The present invention adopts a three-dimensional ellipsoid radio frequency superconducting film cavity with a high quality factor, which has great advantages compared with the currently used rectangular cavity: the quality factor is as high as 10 10 ; and the superconducting qubit is coupled with the superconducting cavity, and the decoherence time of the superconducting qubit is increased to the order of hundreds of milliseconds to seconds, thereby clearing the way for the realization of the manipulation, measurement and quantum storage of the qubit; The invention will be beneficial to obtain long-life superconducting qubits, which are of great significance to quantum computing, quantum storage, quantum information and quantum communication; the invention is the first to apply a three-dimensional ellipsoidal radio frequency superconducting thin film cavity to superconducting quantum In computing, the mature superconducting cavity technology is combined with the emerging superconducting quantum computing to push superconducting quantum computing a step forward.

Description

technical field [0001] The invention relates to superconducting quantum computing, in particular to a superconducting qubit long-life storage device and a storage method thereof. Background technique [0002] Qubit is the basic unit of quantum computing, and its physical realization mainly includes nuclear magnetic resonance, ion trap, semiconductor quantum dot, light quantum and superconducting quantum circuit, etc. As a solid-state macroscopic quantum circuit, superconducting quantum circuits use superconducting qubits as the basic unit, and superconducting qubits are represented by superconducting Josephson junctions. Strong mutual coupling strength and scalability are very promising for the physical realization of quantum computing. The most important factor restricting superconducting quantum computing is the short decoherence time of superconducting qubits. In recent years, with the development of various technologies and the deepening of research, the coherence time ...

Claims

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Application Information

Patent Timeline
26 Feb 2021
Publication
CN110288092B
IPC
G06N10/00
CPC
G06N10/00
Inventors
谢华木; 林林