Quantum bit control device

Abstract

The invention discloses a quantum bit control device, which comprises a control signal generator, N photoelectric detectors, a quantum chip and a shielding device, wherein N is a positive integer greater than 1; the control signal generator is located in a first temperature zone and used for generating N paths of optical control signals and sending the N paths of optical control signals to the N photoelectric detectors located in the shielding device, and the interior of the shielding device is in a vacuum state; and the N photoelectric detectors are positioned in a second temperature zone ofwhich the temperature is lower than that of the first temperature zone, and are used for converting the received optical control signal into an electric control signal and sending the electric controlsignal to the quantum chip positioned in the shielding device for quantum bit control. According to the invention, optical control signals are adopted for transmission, due to the fact that the heatconductivity coefficient of the optical fiber is small, heat transfer from the first temperature zone to the second temperature zone is greatly reduced, and under the same refrigeration power, more control signals can be supported, and system capacity expansion is supported.

Description

technical field [0001] The present application relates to the technical field of quantum computing, in particular to a qubit control device. Background technique [0002] A quantum computer is a device that uses quantum logic for general-purpose computing. Because the superposition of quantum states makes large-scale "parallel" computing possible, it has attracted widespread attention. Quantum computers are different from electronic computers (or traditional computers). Quantum computing uses qubits to store data, and it uses quantum algorithms to perform data operations. Qubits are like semiconductor logic gates on traditional computers. The more qubits there are, the stronger the parallel acceleration capability and the faster the solution to the same problem. The construction of qubits can be realized in a variety of physical systems, such as superconducting circuits, ion traps, semiconductor quantum dots, and topological quantum computing. Different systems have their ...

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Problems solved by technology

[0006] The purpose of this application is to provide a superconducting qubit control device, which solves the problem that the existing refrigeration power cannot support system expansion due to insufficient cooling power

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