= Quantum point contact
{wiki=Quantum_point_contact}
A Quantum Point Contact (QPC) is a nanoscale structure that allows the study of quantum transport phenomena in one-dimensional conductors. It is typically formed in a two-dimensional electron gas (2DEG) system, often created in semiconductor heterostructures. The QPC can be thought of as a narrow constriction through which electrons can tunnel, and its width can be controlled with high precision. **Key Features of Quantum Point Contacts:** 1.
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