Reflection type superconducting transmission line resonant cavity

Abstract

The invention discloses a reflection type superconducting transmission line resonant cavity. The reflection type superconducting transmission line resonant cavity includes a dielectric substrate; the dielectric substrate is provided with two parallel coupling microstrip transmission lines, two toothed coupling capacitors and two microwave access electrodes; one end of each coupling microstrip transmission line is suspended, and the other end of the coupling microstrip transmission line is coupled to one microwave access electrode through one toothed coupling capacitor; and the coupling microstrip transmission lines, the toothed coupling capacitors and the microwave access electrodes are respectively made of aluminum superconducting materials. The reflection type superconducting transmission line resonant cavity of the invention only occupies a small space, and can be integrated on the same substrate together with quantum bits, and therefore, the reflection type superconducting transmission line resonant cavity has excellent integratability; the reflection type superconducting transmission line resonant cavity can be excellent coupled with the quantum bits, so that quantum information exchange can be effectively completed; the reflection type superconducting transmission line resonant cavity can maintain a low-energy few-photon resonant state, so that accurate transmission of quantum information can be ensured; influence of environment noises can be effectively eliminated; adjustment of the Q value of the resonant cavity can be facilitated; and the balance of quantum information maiming ability and exchange ability can be also realized.

Description

technical field [0001] The invention relates to a superconducting transmission line resonant cavity, in particular to a reflection type superconducting transmission line resonant cavity. Background technique [0002] The semiconductor quantum chip is based on the traditional semiconductor industry, making full use of quantum mechanical effects to realize the core components of high-efficiency parallel quantum computing. Qubits, which can be quantum dots or devices such as superconducting quantum interferometers, are the basic units on quantum chips that can store and manipulate quantum information. However, to complete the quantum computing process, it is also necessary to realize the coupling and data exchange between qubits, as well as the detection and readout of quantum information. Ordinary electronic circuits cannot transmit quantum information, so we need some special electronic components to achieve this function for us. Microwave resonators can excite and transmi...

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Problems solved by technology

Ordinary electronic circuits cannot transmit quantum information, so we need some special electronic components to achieve this function for us

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