Hello, Quantum World!
summary
Google claims 200 seconds vs 20,000 years for a quantum supremacy task, IBM disputes the timeline, and commercial clouds (IBM, Amazon, Google, Honeywell, D‑Wave) already expose real machines and simulators. A 7‑qubit Shor run in 2001 proves algorithms work; current devices reach ~50 qubits with public access and 10 minutes free on IBM. Demonstrations run Bell states and quantum teleportation using Hadamard and CNOT gates, hardware at ~0.3 K, and a roadmap predicts a quantum security chip in 5–10 years.
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chapters (11)
- 0:00Quantum supremacy breakthrough
- 1:54Computational complexity hierarchy
- 6:07Feynman’s vision
- 8:15How quantum computers work
- 10:49Superposition and entanglement
- 15:06Qubits vs classical bits
- 21:51Building quantum algorithms
- 28:54Quantum teleportation demo
- 33:38Industry progress and players
- 36:49Future applications and challenges
- 39:58Resources and getting started
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