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What Is A Qubit?

Posted

February 6, 2026

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In this discussion, Neil deGrasse Tyson is joined by co-host Chuck Nice and guest John Martinis, physicist and Nobel Prize laureate, to demystify quantum computing. Martinis explains what a qubit is, how quantum superposition enables massive parallel computation, why quantum computers are powerful yet difficult to harness, and how advances in quantum computing threaten classical encryption—necessitating a transition to quantum-safe cryptography—while clarifying what “quantum supremacy” really means in practice.

From 'An Interview with the Winner of the 2025 Nobel Prize in Physics, John Martinis'

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