Quantum Computing for Beginners

Explore classical computing with bits 0 or 1, represented by voltages. See how not and nand gates, built from transistors T1 and T2, form logic gates process zeros and ones.

Explore the qubit, the basic unit of quantum information, its superposition of 0 and 1, and realizations such as electron spin, photon polarization, phosphorus in silicon, and superconducting loops.

Explore how the Bloch sphere represents a qubit state with theta and phi, linking surface pure states to interior mixed states.

Discover Pauli gates X, Y, and Z and their 180-degree rotations, where X flips the bit, Z flips the phase, and Y combines bit and phase flips with matrix representations.

Explore CNOT gate, two-qubit operation with a control qubit and a target qubit that flips the target when the control is 1, enabling an entangled state and four-by-four matrix representation.

Explore the ccnot (toffoli) gate with three qubits, two control bits and one target, flipping the target when both controls are one, shown via an 8×8 matrix.

Demonstrates the quantum socket model and using IBM Quantum Experience to run quantum algorithms. Build sockets with the composer and run on a simulator or a real back end.

Access real quantum computers through IBM quantum experience, create and run simple circuits with qubits, X gates, and measurements, and view probabilistic outcomes on simulators and backends.

Explore quantum entanglement, where measurements on entangled qubits influence each other across distances, and learn how to create entangled states using a control qubit and a controlled-not (cnot) gate.

Explore quantum teleportation, a process that transfers a cubit using entanglement and a classical channel, not moving matter, with steps involving a shared Bell state, measurements, and conditional operations.

Discover the no cloning theorem in quantum computing, which states that an unknown quantum system cannot be cloned, a principle that underpins quantum cryptography.

Explore quantum algorithms that outperform classical ones, including the Deutsch-Jozsa problem, by using superposition and entanglement to solve black-box queries with fewer calls.