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Module 1: Quantum Foundations

Qubits Decoded: How Quantum Computers Actually Work

Episode 120:00

Quantum computing is often portrayed as a kind of technological magic—a mysterious box that leverages the strangest parts of physics. This episode moves beyond the surface-level weirdness to reveal how quantum computers actually function.

We cover:

• Why adding one qubit doubles your computing space

• How qubits are more like dimmer switches than light switches

• The different physical implementations of qubits

• How quantum algorithms use interference to find answers

• Why today's quantum computers are incredibly fragile

• The gap between physical qubits and logical qubits

Understanding these realities is the key to separating science fiction from the coming technological revolution.

Key Takeaways

  • A qubit can exist in superposition - both 0 and 1 simultaneously
  • Adding one qubit doubles computational space (exponential scaling)
  • Qubits are fragile - decoherence is the main engineering challenge
  • Error correction requires many physical qubits per logical qubit
  • Quantum advantage applies to specific problems, not everything

Qubits Decoded: How Quantum Computers Actually Work

0:0020:00
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Episode 220:00
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