A quantum circuit is a computational routine consisting of a sequence of quantum gates, measurements, and resets, which operates on a quantum register. It serves as the fundamental building block for quantum algorithms, enabling quantum computers to perform complex calculations beyond the capabilities of classical systems.

Quantum Circuit

quantum circuit

computational routine

Quantum gates are the fundamental building blocks of quantum circuits, manipulating qubits through unitary transformations to perform quantum computations. Unlike classical logic gates, quantum gates can create superpositions and entanglements, enabling the execution of complex algorithms with potentially exponential speed-ups over classical counterparts.

quantum gates

A quantum register is a system composed of multiple qubits, used to store and manipulate quantum information in quantum computing. It enables the representation and processing of exponentially large data sets through quantum superposition and entanglement, providing a foundation for quantum algorithms.

quantum register

fundamental building block

Quantum algorithms leverage the principles of quantum mechanics, such as superposition and entanglement, to solve problems more efficiently than classical algorithms. They promise exponential speed-ups for certain computational tasks, like factoring large numbers and searching unsorted databases, fundamentally changing the landscape of computational complexity.

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