In physics, a quantum is the minimum amount of any physical entity involved in an interaction, representing discrete units of energy, charge, or other physical properties.
Quantum computing is a type of computation that harnesses the collective properties of quantum states, such as superposition, interference, and entanglement, to perform calculations. The devices that perform quantum computations are known as quantum computers. They are believed to be able to solve certain computational problems, such as integer factorization, substantially faster than classical computers.
Quantum entanglement is a fundamental phenomenon in quantum mechanics where pairs or groups of particles become interconnected in such a way that the quantum state of one particle cannot be described independently of the others, even when the particles are separated by large distances. This phenomenon was famously described by Albert Einstein as 'spooky action at a distance' and has been a subject of extensive research and debate in the field of quantum physics.
Quantum Field Theory (QFT) is a fundamental theory in physics that provides a theoretical framework for understanding the subatomic world. It merges the principles of quantum mechanics with those of special relativity and classical field theory, positing that particles are excitations of underlying quantum fields rather than discrete objects. QFT is the foundation of the Standard Model of particle physics and has been successfully applied to condensed matter physics.
Quantum physics is a fundamental branch of physics that studies the behavior of matter and energy at the atomic and subatomic levels, introducing concepts such as wave-particle duality, superposition, and entanglement.
Superconductivity is a set of physical properties observed in certain materials where electrical resistance vanishes and magnetic flux fields are expelled from the material. Any material exhibiting these properties is a superconductor. Unlike an ordinary metallic conductor, whose resistance decreases gradually as its temperature is lowered, a superconductor has a characteristic critical temperature (Tc) below which the resistance drops abruptly to zero.