Dossier 001 — v1.0 (publication of record)

Energy–time entangled photon pairs carry 16–20 bits of potential key per coincidence; demonstrated systems extract 3–7, limited by detector timing jitter. This work proposes placing single-photon time lenses inside the receivers of a dispersive-optics QKD link, magnifying arrival-time structure before detection so the effective resolution beats the jitter by the magnification M — projecting 13–15 bits per coincidence and key rates of order 108 b/s from demonstrated components, with a nonlocal variant in which the fiber's own dispersion completes an imaging system that exists only in coincidences. Every number below is recomputable in your browser. Don't trust this paper — run it.