Spin Qubits: Bell States and Quantum Logic Gates

This lecture covers the concept of Bell states, which are correlated states of nuclear and electron spins, and the generation of entangled states through a 109.47-degree rotation. It also discusses density matrix tomography, CNOT gates, experimental implementations, algorithmic cooling, and partner pairing in the context of spin qubit architecture. The instructor explains the significance of very long spin lattice relaxation times and spin coherences in isotopically enriched silicon, highlighting the potential of spin qubits in quantum computing.