x - Qubit - Born rule - Dirac notation - Global phase - $\mathbb{CP}^1$ - Hopf fibration - Bloch sphere - Pure state - Mixed state - $\lvert 0\rangle$ (Zero state) - $\lvert 1\rangle$ (One state) - $\lvert +\rangle$ (Plus state) - $\lvert -\rangle$ (Minus state) - $\lvert +i\rangle$ (Plus-i state) - $\lvert -i\rangle$ (Minus-i state) - Two qubits - bell-state - Three qubits - W state - GHZ state - NOON state - Quantum register - Quantum gate - Multiqubit gates - $I$ gate (Identity gate) - $X$ gate (NOT gate) - Y gate - Z gate - Rotation gates - Hadamard gate - Phase gate - Unitary gate - CNOT gate - Toffoli gate - SWAP gate - iSWAP gate - Quantum circuit - Quantum algorithm - Deutsch's algorithm - Deutsch-Jozsa algorithm - Quantum phase estimation - Quantum Fourier transform - Grover's algorithm - Shor's algorithm - Hidden subgroup problem - HHL algorithm - NISQ - QAOA - VQE - Density matrix - lindbald-equation - Kraus operator - Schrödinger equation - Rabi oscillations - Ramsey interferometry - Rotating wave approximation