SUPERCONDUCTOR-BASED QUANTUM COMPUTERS AND METHODS OF OPERATING THE SAME

Smart overview of the Invention

The patent application introduces a superconductor-based quantum computer featuring a multi-layer structure designed to optimize qubit control and minimize interference. The architecture comprises a lower layer with a multi-chip module, a middle layer equipped with a superconductor transmission line, and an upper qubit layer. A key innovation is the coupling rate control element, which adjusts the interaction strength between the transmission line and the qubit layer, crucial for maintaining qubit quality and performance.

Technical Specifications

The coupling rate control element is a crucial component, featuring a movable material layer whose boundary shifts based on applied voltage, and a metal layer that forms capacitive couplings. This design allows precise adjustments to the coupling rate, balancing the need for fast qubit control with the preservation of qubit coherence. The metal layer's position relative to the qubit layer and transmission line is vital for controlling electromagnetic wave transmission.

Operational Methods

Operating the quantum computer involves adjusting the gap between the transmission line and the qubit layer by manipulating the coupling rate control element. This is achieved by applying a voltage to the element, which alters the capacitive coupling strength. The process allows for dynamic tuning of qubit interactions, enhancing computational efficiency and reducing crosstalk between qubits.

Design Variations

The patent outlines several design variations, including configurations where the coupling rate control element is positioned either in the middle or lower layers. The metal layer may include vertical rods for enhanced coupling, and the movable material may respond to various forces such as electrostatic or piezoelectric. These variations offer flexibility in adapting the system to different quantum computing needs.

Implications and Applications

This superconductor-based quantum computer design addresses common challenges in quantum computing, such as qubit quality degradation and crosstalk. By enabling precise control over qubit interactions, the system is positioned to improve the speed and accuracy of quantum operations. These advancements have potential applications in fields requiring high-performance quantum computations, such as cryptography and complex simulations.