In this video, you will find a brief explanation of quantum bit (qubit) which are the building blocks of quantum computers.

A qubit is a unit of quantum information. It is the quantum analog of the classical bit, which is the basic unit of information in classical computing.

Unlike classical bits, which can only represent a 0 or a 1, qubits can represent both a 0 and a 1 simultaneously. This property, known as superposition, allows quantum computers to perform certain calculations much faster than classical computers.

Qubits can be realized in a variety of physical systems, including nuclear spins, electron spins, and photons.

To perform calculations, qubits must be controlled and measured using specialized quantum hardware and techniques.

One of the challenges in building a quantum computer is maintaining the coherence of the qubits, as any interaction with the environment can cause the qubits to lose their quantum properties. As a result, quantum computers must be carefully designed and constructed to minimize decoherence and other sources of noise.