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Common Quantum Circuits
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State Preparation
Components: Quantum gates, Ancilla qubits (sometimes). Accomplishes: Prepares a specific quantum state from a default initial state.
Superdense Coding
Components: Pre-shared entangled pair, Pauli gates, Bell state measurement. Accomplishes: Transmits two classical bits of information using one qubit.
Quantum Random Walk
Components: Quantum coins, Shift operators, Quantum state space (graph or line). Accomplishes: Quantum counterpart to classical random walks, explores paths in superposition.
Quantum Arithmetic Circuits
Components: Quantum adders, Quantum multipliers, Ancilla qubits. Accomplishes: Performs arithmetic operations such as addition or multiplication on quantum states.
Grover's Search
Components: Oracle, Diffusion operator. Accomplishes: Provides a quadratic speedup in searching an unsorted database.
Quantum Gate Teleportation
Components: Entangled qubits, Quantum gates, Classical communication. Accomplishes: Transfers a quantum gate operation from one qubit to another at a distance.
Entanglement Generation
Components: Quantum gates (such as Hadamard and CNOT), Qubits. Accomplishes: Produces entangled states, which are crucial resources for many quantum processes.
Quantum Key Distribution (QKD)
Components: Quantum bit (qubit) transmission, Randomly chosen bases for encoding, Public classical communication channel. Accomplishes: Creates a shared secret key between two parties secure against eavesdropping.
Swap Test
Components: Controlled-SWAP gate, Hadamard gates, Auxiliary qubit. Accomplishes: Determines if two quantum states are identical or different.
Deutsch-Jozsa Algorithm
Components: Quantum register, Oracle for function evaluation, Hadamard gates. Accomplishes: Determines if a function is constant or balanced with one query.
Quantum Repeaters
Components: Entanglement swapping, Quantum memories, Bell state measurements. Accomplishes: Extends the distance for quantum communication.
Amplitude Amplification
Components: Oracle, Diffusion operator (in Grover's algorithm). Accomplishes: Enhances the probability amplitude of desired states in a quantum superposition.
Quantum Fourier Transform (QFT)
Components: Quantum gates (Hadamard and controlled phase gates). Accomplishes: Transforms a quantum state into its frequency domain representation.
Universal Quantum Gates
Components: Set of gates that can construct any quantum circuit (e.g., CNOT, Hadamard, and π/8 gates). Accomplishes: Enable the realization of any quantum operation.
Phase Estimation
Components: Quantum register, Controlled-U operations. Accomplishes: Estimates the phase of an eigenvalue of a unitary operator.
Quantum Teleportation
Components: Entangled pair of qubits, Bell state measurement, Classical communication, Pauli gates. Accomplishes: Transfers a quantum state to another qubit via entanglement.
Quantum Error Correction
Components: Ancilla qubits, Quantum gates for error syndromes, Recovery operations. Accomplishes: Protects quantum information against errors.
Quantum Error Detection
Components: Ancilla qubits, Parity check operations, Non-destructive measurements. Accomplishes: Detects errors in qubits without measuring the qubits themselves.
Bell Test Experiment
Components: Entangled qubits, Measurement devices, Classical channels. Accomplishes: Tests for quantum entanglement and the violation of Bell's inequality.
Quantum Sensor Networks
Components: Network of quantum sensors, Entangled states, Classical and quantum communication links. Accomplishes: Enhances sensitivity and measurement accuracy by using quantum properties.
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