The Quantum Computing & Post-Quantum Cryptography (PQC) Revolution: Qubits, Shor's Algorithm, RSA Vulnerabilities, and NIST Cryptographic Migration Architecture

# The Quantum Computing & Post-Quantum Cryptography (PQC) Revolution: Qubits, Shor's Algorithm, RSA Vulnerabilities, and NIST Cryptographic Migration Architecture

An exhaustive enterprise masterclass on quantum computing fundamentals: Bloch sphere superpositions, quantum entanglement mechanics, Shor's exponential factoring breakdown of RSA/ECC public key infrastructure, Grover's database query speedup impacting AES keylengths, physical NISQ decoherence bottlenecks and surface-code Quantum Error Correction (QEC), the existential threat of "Harvest Now, Decrypt Later" (HNDL), the official NIST FIPS post-quantum cryptographic standards (ML-KEM, ML-DSA, SLH-DSA), and production hybrid cryptographic transition roadmaps.