Quantum Information Science
The discipline that studies how information is encoded, stored, transformed, transmitted, sensed, and protected using quantum-mechanical degrees of freedom. SJ Wiki organizes the field into five sister areas:
Areas
- Quantum Computing — hardware platforms, quantum algorithms, error correction, and quantum machine learning.
- Quantum Communication — BB84, QKD families, and quantum-network architectures.
- Quantum Internet — entanglement distribution, teleportation as a primitive, and quantum repeaters.
- Quantum Sensing — quantum metrology, atomic clocks, magnetometry, gravimetry.
- Quantum Security — post-quantum cryptography (PQC) and quantum-safe-crypto migration.
Sister sections in this wiki
- Quantum Mechanics — the physical theory underneath everything in QIS.
- Linear Algebra — Hilbert spaces, unitaries, and inner-product geometry.
- Cryptography — classical cryptography that PQC must replace under quantum threat.
- Reinforcement Learning and Deep Learning — classical ML methods that quantum ML borrows from and competes with.
How these notes are organized
Each area starts with an intro page and breaks into 2-4 sub-pages by major topic. Pages emphasize:
- Dirac notation with explicit matrix forms for small systems.
- Worked circuits computed by hand on 1-3 qubits.
- Qiskit / Cirq snippets for executable examples.
- Connections across the QIS areas (e.g., QKD security proofs rely on no-cloning; quantum repeaters connect Internet to communication; PQC sits at the QIS / cryptography boundary).
Content is being populated incrementally. Drop textbooks or papers into tmp/ and request an agent run.