Is Quantum Computing Really a Thing?
summary
Overview of current reality: real devices live in the cloud (the IBM Q Experience queue) but have few qubits and very limited gate depth because qubits decohere and need supercooling (~0.03 K); Microsoft supplies a local Q# simulator that runs hundreds of shots to show Hadamard-produced ~50/50 measurements. A concrete demo called Clementine's Cat models cat-feeding with four qubits and yields probabilistic outcomes across runs. Advances target topological qubits and error correction; usable, cost-effective quantum advantage remains years away and depends on fidelity, cooling and scalable error correction.
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chapters (14)
- 0:00Start
- 9:29Quantum Mechanics
- 14:04What Is a Qubit
- 20:06Program a Quantum Computer
- 27:16Where Is Quantum Computing
- 31:23Quantum Code
- 36:06Basic Gates
- 37:48The Hadamard Transform
- 40:55Quantum Simulator
- 43:52Quantum Entanglem
- 45:17Modeling a Cat's Behavior
- 49:26What Is the Future of Quantum Computing
- 50:54Will My Encryption Algorithms Become Worthless When Quantum Computers Are Everywhere
- 51:29When Will There Be Quantum Computers That Are Usable
