7 most common types of quantum tunnelling applications

Learn about the 7 most common applications of quantum tunnelling, including scanning tunneling microscopy, quantum computing, and quantum dot solar cells.

7 Most Common Types of Quantum Tunnelling Applications

Quantum tunnelling is a fundamental concept in quantum mechanics that describes the ability of a particle to pass through a potential barrier, even if it does not have enough energy to surmount it. This phenomenon has many practical applications, including in the fields of electronics, optics, and chemistry. In this article, we will discuss the 7 most common types of quantum tunnelling applications.

1. Scanning Tunneling Microscopy (STM)

Scanning Tunneling Microscopy (STM) is a technique that uses quantum tunnelling to create images of surfaces at the atomic level. STM works by scanning a fine-tipped probe over the surface of a material and measuring the current that flows between the probe and the surface due to quantum tunnelling. This current is used to create a three-dimensional image of the surface with atomic resolution, making it an invaluable tool for studying the properties of materials.

2. Quantum Computing

Quantum computing is a field that uses quantum tunnelling to perform calculations that would be impossible with classical computers. In a quantum computer, quantum bits (qubits) are used instead of classical bits, which can be in multiple states at once. Quantum tunnelling plays a crucial role in quantum computing because it allows qubits to interact with each other even when they are not physically connected, enabling faster and more efficient computation.

3. Tunnel Diodes

Tunnel diodes are electronic devices that use quantum tunnelling to create a region of negative resistance. When a voltage is applied to a tunnel diode, electrons can tunnel