Ldb Convergenze Parallele_12

A quantumbit (qubit) is the smallest unit of quantum information, analogous to a classical bit but capable of existing in a superposition of states. A qubit can be represented by a vector and can be in multiple states simultaneously. To realize qubits, various physical systems are used including trapped ions, photons, and superconducting circuits. These qubits must be cooled to extremely low temperatures near absolute zero to minimize noise and preserve quantum properties. Techniques like Doppler cooling, optical molasses, and Sisyphus cooling have allowed researchers to create qubits from trapped ions and achieve temperatures within millionths of a degree above absolute zero.