Quantum chip, quantum data bus, microwave transmission line resonant cavity and preparation method

Abstract

The invention discloses a quantum chip, a quantum data bus, a microwave transmission line resonant cavity and a preparation method, wherein the microwave transmission line resonant cavity is started from the same central node, and the transmission line extends to multiple terminals; each terminal can be coupled to one or two quantum bits so as to increase the number of the quantum bits which can be coupled with the microwave transmission line resonant cavity; and in addition, compared with the microwave resonant cavity in the prior art, the microwave transmission line resonant cavity disclosed in the invention can be coupled with more quantum bits, without needing a way of increasing the number of the microwave resonant cavities to increase the number of the quantum bits which can be coupled with the quantum chip, so that the structural design complexity of the quantum chip which can be coupled with multiple quantum bits is lowered.

Description

technical field [0001] The present application relates to the technical field of microwave devices, and more specifically, to a quantum chip, a quantum data bus, a microwave transmission line resonant cavity and a preparation method. Background technique [0002] In the current mainstream solid-state qubit system, the microwave resonator is the preferred medium for coupling and information transmission between multiple qubits. It aggregates information that multiple qubits operate independently and are entangled with each other, so we call it the "quantum data bus". At present, the most widely used microwave resonator is the half-wavelength coplanar waveguide resonator. The qubits are placed at the two ends of the coplanar waveguide resonator, and the coupling between the qubits is enhanced by the nature of the antinode of the voltage. [0003] However, the carrying capacity of ordinary microwave resonators is limited, and can only couple two to four qubits at most. General...

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Problems solved by technology

[0003] However, the carrying capacity of ordinary microwave resonators is limited, and can only couple two to four qubits at most. Generally, the number of qubits that can be coupled by a quantum chip can only be increased by increasing the number of microwave resonators. This method will undoubtedly increase Reduced the complexity of quantum chip structure design

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