Low-temperature microwave source, low-temperature microwave source chip and manufacturing method thereof

Abstract

The present invention disclosed a low -temperature microwave source, low -temperature microwave source chip and its production method. The chip includes the substrate and the transmission cavity, bias node, voltage bias line, and DC bias line on the surface of the substrate;The cavity includes the Squid chain, which is used to transmit microwave photons; bias knot connection with transmittance cavity is used to generate microwave photons; voltage bias wires are used to apply bias voltage for bias knots, so that the electronics in the bias knot in the bias knotIt is transformed into a microwave photon through the method of being excited; the DC bias line is used to apply a magnetic field for the transmission cavity; the resonance frequency of the transmission cavity is determined by the total capacitance and total inductance of the Squid chain;The change of changes, the size of the magnetic field changes with changes in the current in the DC bias.The low -temperature microwave source chip provided by the present invention is to generate microwave photons by being excited, ensuring the frequency, amplitude, and phase stability of the emitted microwave photon that is launched, and meet the requirements of the microwave source.

Description

technical field [0001] The invention relates to microwave circuit components, more specifically, to a low-temperature microwave source, a low-temperature microwave source chip and a manufacturing method thereof. Background technique [0002] In the field of solid-state quantum computing, only by placing the quantum chip in an extremely low temperature environment can the quantum characteristics of the qubit be fully highlighted, and it is also necessary to suppress the influence of environmental noise on quantum coherence. However, in the prior art, the measurement techniques used to control qubits are all performed by classical instruments. For example, the microwave source used to control qubits is difficult to meet the current needs of solid-state quantum chip control and quantum computing. [0003] In the prior art, the microwave source used to manipulate qubits has the problem of high noise on the one hand, and on the other hand, because the microwave source is applied ...

AI Technical Summary

Problems solved by technology

However, in the prior art, the measurement techniques used to control qubits are all performed by classical instruments. For example, the microwave source used to control qubits is difficult to meet the current needs of solid-state quantum chip control and quantum computing.

[0003] In the prior art, the microwave source used to manipulate qubits has the problem of high noise on the one hand, and on the other hand, because the microwave source is applied through the room temperature line, before the microwave signal goes from room temperature to the ultra-low temperature quantum chip, it needs to be processed. Complex filtering, attenuation and other optimization design, but often the optimized microwave signal still cannot meet the requirements of solid-state quantum chip control and quantum computing

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