Superconducting Bilayers of Two-Dimensional Materials with Integrated Josephson Junctions

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes a new type of Josephson junction (JJ), which is a fundamental building block in quantum devices, formed from bilayers of two-dimensional (2D) materials like twisted bilayer graphene. The invention uses azimuthally misaligned (twisted) 2D layers with a specially designed weak-link region that is an integral part of the bilayer, either by engineering lattice defects or introducing a physical bend, instead of using a separate barrier material. These JJs can be incorporated into advanced electronic circuits and devices, especially for quantum and superconducting applications, including sensitive photon detectors and components for quantum computers.

Use CasesContent extracted from patent full text and abstract with AI.

• Quantum computing circuits, especially superconducting qubits
• High-sensitivity microwave and photon detectors for astronomy and quantum information
• Superconducting quantum interference devices (SQUIDs) for scientific instrumentation
• Bolometers and other ultra-sensitive thermal and particle detectors
• Heterodyne or homodyne mixers and oscillators for RF and microwave signal processing
• Quantum sensing and measurement platforms
• Advanced research in condensed matter physics and device engineering

BenefitsContent extracted from patent full text and abstract with AI.

• Enables precise and scalable fabrication of Josephson junctions using 2D materials, especially with gate-tunability
• Improves integration and miniaturization by making the weak-link region intrinsic to the bilayer, removing the need for separate barrier materials or leads
• Enhanced material flexibility: can be implemented with various 2D superconducting materials (e.g., twisted bilayer graphene, transition metal dichalcogenides)
• Potential for higher performance and sensitivity in quantum and superconducting devices due to superior material properties and device architecture
• Supports tunable device operation via gating, allowing dynamic control of electronic properties
• May lead to lower noise, improved performance, and novel functionalities in quantum electronics and detectors

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

Josephson junctions (JJ) based on bilayers of azimuthally misaligned two-dimensional materials having superconducting states are provided. Also provided are electronic devices and circuits incorporating the JJs as active components and methods of using the electronic devices and circuits. The JJs are formed from bilayers composed of azimuthally misaligned two-dimensional materials having a first superconducting segment and a second superconducting segment separated by a weak-link region that is integrated into the bilayer.