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Nobel Prize in Physics Winner: The Quantum Leap That Changed Everything - John Martinis

2025-10-27 Entertainment
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All-In Podcast
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Nobel Laureate John Martinis on Proving Macroscopic Quantum Mechanics and Building Quantum Computers

Learn how John Martinis’s Nobel-winning experiment proved quantum mechanics applies to large electrical circuits, paving the way for devices like superconducting qubits. Discover the 40-year journey from theoretical curiosity to the brink of practical quantum computing.

Short Summary

  • Martinis’s early work verified that macroscopic objects (electrical circuits) obey quantum mechanical laws, specifically through observing quantized energy levels.
  • The foundational experiment involved testing quantum tunneling in a Josephson junction—a core component used in modern superconducting qubits.
  • The impact of this 1985 research was initially abstract but directly enabled the development of quantum computing algorithms decades later.
  • Scaling quantum computers requires moving from noisy, small systems (currently $\sim 100$ qubits) toward millions of high-fidelity qubits.

The discussion traces Martinis’s path from his empirical upbringing to UC Berkeley, culminating in the groundbreaking experiment demonstrating quantum mechanics at a scale relevant to engineering and computing devices. He emphasizes that while the initial discovery was slow to impact industry, it laid the essential theoretical and physical groundwork for today's quantum race.

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Description

(0:00) David Friedberg intros John Martinis, the 2025 recipient of the Nobel Prize in Physics (0:43) John's history, how he got into physics (4:54) Explainer on quantum mechanics (22:57) Quantum tunneling and the 1985 paper that led to this Nobel Prize (30:37) Understanding qubits, the state of quantum computing, and the impact of AI (40:56) US vs China in quantum, reactions to winning the Nobel Prize Learn more about the 2025 Nobel Prize in Physics: https://www.nobelprize.org/prizes/physics/2025/summary Follow the besties: https://x.com/chamath https://x.com/Jason https://x.com/DavidSacks https://x.com/friedberg Follow on X: https://x.com/theallinpod Follow on Instagram: https://www.instagram.com/theallinpod Follow on TikTok: https://www.tiktok.com/@theallinpod Follow on LinkedIn: https://www.linkedin.com/company/allinpod Intro Music Credit: https://rb.gy/tppkzl https://x.com/yung_spielburg Intro Video Credit: https://x.com/TheZachEffect #allin #tech #news

Top Comments (10)

@krosfyah4932 2025-10-27

Friedberg is such a GOAT. I’ve listened to every single All In episode - he was my least favorite when I started and I groaned like Sacks when science corner started - 5 years later he is without a doubt the only one who I hang off of every word. Dude is such a great thinker and so objective. If I were gay, I 100% would, he’s the freaking man.

205 17 replies
@josephdouglas6260 2025-10-27

Friedberg is goated for his science conversations.

202 3 replies
@sawwallace 2025-10-27

Guys dad was a fireman and his mom stayed at home. Underrated parent structure.

150 7 replies
@urluggage 2025-10-27

I understood 0% but loved 100% of this chat

98 4 replies
@leogir1518 2025-10-27

Fantastic interview, will share this with a ton of my friends because this is awesome

31
@regmcguire5582 2025-10-27

These interviews are the best of All In!

28
@TheLoganstewart 2025-10-28

I took quantum with John Martinis at UCSB. One of my favorite professors of all time.

26 1 replies
@ramsayfarran992 2025-11-07

What a great interview. Explained it so well that an 80 year old, with no math, could understand a good 70%. Thank you.

10
@marthajohnson2775 2025-10-29

This is the third time I've watched this interview. John Martinis is one of the most interesting guests Friedberg has ever had on his podcast. Thank you so much for inviting him, Friedberg. Thank you for accepting, Mr. Martinis!

7
@ConversationsWithVania 2026-04-01

John Martinis is really fascinating and insightful, I’m very happy I had the chance to talk with him on my podcast as well, learned a lot from his discussions of quantum computing and other things

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