Quantum gates are the fundamental building blocks of quantum circuits, analogous to classical logic gates in classical computing. They perform operations on quantum bits, or qubits, which are the basic units of quantum information. ### Key Characteristics of Quantum Gates: 1. **Unitary Operations**: Quantum gates are represented by unitary matrices, meaning they preserve the probabilities of quantum states. This property ensures that the information is conserved and allows for the reversible nature of quantum operations.
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