Superconductivity refers to the phenomenon that the resistance of certain materials becomes zero at low temperatures (usually near absolute zero). In superconductivity physics, superconductivity can be explained by the pairing of superconducting electrons, which is called "Cooper pair". Superconducting materials can achieve impedance-free transmission of electric current in the superconducting state, so they can be used to realize key components such as quantum bits and quantum gates in quantum computing. The reason why superconductors have no resistance is that electrons bind into Cooper pairs, which require energy to break up (and cannot obtain energy through thermal energy at low temperatures), and they attract each other, which is counterintuitive, as opposed to the repulsion between electrons in daily life.
Superconductivity is achieved through the pairing of superconducting electrons, known as Cooper pairs, which attract each other and require energy to break up, unlike the repulsion between electrons in daily life.
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