Manipulation Zone for Qubits in Quantum Dots

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

This invention discloses an electronic component used for manipulating and reading the quantum states (Qubits) in quantum dots, which are tiny, confined regions within a semiconductor structure. The component is designed to transport a quantum dot along a controlled path in a substrate containing a two-dimensional electron gas, using specially arranged gate electrodes that generate movable and static potential wells. A movable potential well, created by alternating gate electrodes, continuously transports the quantum dot (and thus the Qubit) along the substrate without disturbing its quantum state, allowing for precise measurement and coupling over larger distances. This enables scalable quantum logic circuits and read-out of Qubits in next-generation quantum computers.

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

• Quantum computing hardware where Qubits based on quantum dots need to be transported for information processing or coupling.
• Read-out devices for quantum states in research and development of quantum information systems.
• Applications in scalable quantum processor architectures requiring long-distance Qubit interconnectivity.
• Nanofabrication platforms for precise manipulation and monitoring of quantum objects in semiconductors.
• Integration in cryogenic or low-temperature electronics for quantum technology experimentation.

BenefitsContent extracted from patent full text and abstract with AI.

• Allows near-continuous, precise transport of quantum dots (Qubits) over significant distances in a semiconductor device without loss of quantum information.
• Enables scalable architectures for quantum computing, addressing a key bottleneck in coupling distant Qubits.
• Reduces errors associated with quantum tunneling during Qubit transfer, improving measurement reliability.
• Compatible with advanced semiconductor materials like GaAs and SiGe, enabling integration with existing nanotechnology manufacturing.
• Facilitates the design of logical circuits and operations essential for universal quantum computers.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The invention relates to an electronic component (10) which is formed by a semiconductor component or a semiconductor-like structure with gate electrode arrangements (16, 18, 20) for the transport of a quantum dot (52). The electronic component (10) contains a substrate (12) comprising a two-dimensional electron gas or electron hole gas. Electrical contacts connect the gate electrode arrangements (16, 18, 20) to voltage sources. A first gate electrode arrangement (16) having gate electrodes (22, 24) is provided on a surface (14) of the electronic component in order to create a potential well (50) in the substrate (12). The gate electrode arrangement (16) has parallel electrode fingers (32, 34), said electrode fingers (32, 34) being alternately connected together at intervals which causes almost continuous transport of the potential well (50) through the substrate (12), a quantum dot (52) being translated together with this potential well (50) in one direction.