High-speed jumper for enabling long-distance connection of superconducting quantum computer chips

Abstract

According to an embodiment of the invention, a quantum processor includes a qubit chip. The qubit chip includes a substrate, and a plurality of qubits formed on a first surface of the substrate. The plurality of qubits are arranged in a pattern, wherein closest adjacent qubits in the pattern are connected. The quantum processor also includes a long distance connector configured to connect a first qubit of the plurality of qubits to a second qubit of the plurality of qubits, where the first and second qubits are separated by at least a third qubit in the pattern.

Description

Background technique [0001] The presently claimed embodiments of the present invention relate to quantum computer chips and, more particularly, to a highway jumper that enables long distance connections for superconducting quantum computer chips. [0002] Superconducting quantum chips have limitations on the connectivity of qubits. Currently, the superconducting quantum chip connection scheme is "nearest neighbor". Each qubit in the quantum chip can be connected to multiple nearest neighbor qubits. However, the nearest neighbor qubits may be only a small subset of the qubits contained on this superconducting quantum chip. Thus, a given qubit may be connected to most of the qubits on the quantum chip only through one or more additional qubits. If two-qubit operation is desired in this case, multiple swap gates may be required to enable the operation. However, qubit state swapping adds operational overhead, which requires the quantum system to remain coherent over longer per...

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Problems solved by technology

However, qubit state swapping adds operational overhead, which requires the quantum system to remain coherent over a longer period of time

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