Quantum Technologies: Quantum Computing & Secure Quantum Communication
summary
Photonic lab builds single‑photon sources via spontaneous parametric down‑conversion, implements higher‑dimensional qutrits (two qutrits nearly maximally entangled) and records entanglement 0.995; entanglement‑based QKD prototypes deliver about 50 kilobits per second with QBER 4.79% (below the security threshold), use machine‑learning to tune Bell‑violation settings, release QKDsim to model realistic experimental imperfections, pursue ISRO‑backed satellite QKD and estimate that breaking RSA‑2048 would require ~4,000 logical qubits and ~100 million gates.
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chapters (7)
- 0:00Start
- 22:55How does Quantum Mechanics protect information?
- 23:24Need for Entanglement
- 24:16Different approaches to QKD
- 32:35Bootstrap method for measurement rate estimation
- 34:45Satellite based Quantum Key Distribution
- 36:24Quantum Communications overview
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