“What is proved by impossibility proofs is lack of imagination.” - John S. Bell (1982)

Quantum networking is gaining traction. It has two main applications: macro (secure communication via quantum key distribution and eavesdropper detection) and micro (scaling quantum computers by connecting qubit clusters). Both rely on entanglement. Recent progress has been

The advent of quantum information has energized condensed matter physics, and the pace of discovery is accelerating. Gave a talk at Cornell on the first snow day—here are highlights of the amazing work I learned about: Eun-Ah Kim (Hans Bethe Professor of Physics) heads the new

Think of quantum as an asset class (broader than public QC stocks or big tech side bets): 📍 Now: Infrastructure 📍 ~2 yrs: Sensing + PQC 📍 ~5 yrs: Intermediate-state QC - Materials/chemistry 📍 ~10 yrs: Fault-tolerant QC Same physics, different applications,

Incredible progress and very promising. Eager to try it out in condensed matter theory. We often find special cases (e.g., lattice models) and then search for related cases or generalizations. Could help design better quantum materials and computing.

Which quantum computer is actually the most "quantum"? Uses quasi-particle interference to test how "quantum" each platform really is. Fixed circuit. Known answer. Scale it up until the machine can't handle it. That's your Q-grade. Illustrates steady improvement with each

Collaboration across multiple institutions is how we will build the next generation of quantum devices. Cooking up synthetic quantum matter: "waffles", "Y-Cooper pair splitters" and other elements. Bringing theory into reality with an incredible group. Right to left:

https://t.co/eXpL4eWkcD

Quantum fireworks at our panel with @dwavequantum, @IonQ_Inc, @IBMQuantum, and @OpenQuantumDes, exploring Quantum & AI synergy. Competition drives progress! Enjoyed moderating a lively discussion with @Alan_Baratz (CEO, D-Wave), @ralamedd (Chief Revenue Officer, IonQ), Blake

Why the difference? I asked Grok to consider the full Bitcoin workflow. Musk focused on a subset—parts of authentication and proof-of-work which get a lot less speed-up from quantum than in, for example, wallet management (quadratic vs exponential). Aside from the fact that 10%

What's the probability quantum breaks bitcoin? Elon Musk asked Grok. So did I. His: <10% by 2035. Mine: 65%. What's the difference? See replies. @amarchenkova @BTQ_Tech

Topological quantum computing is closer than many think - they are looking in the rear view mirror. Enjoyed giving a seminar to the exceptional topological quantum computing team at Microsoft Station Q in Santa Barbara. Many thanks to Chetan Nayak for hosting and for insightful

What is topological quantum computing? In brief (3/3)

What is topological quantum computing? In brief (2/3)

What is topological quantum computing? In brief (1/3)

Good to be in good company - I posted the above on LinkedIn one week ago before the latest news: @PsiQuantum $1b raise, @QuantinuumQC $10b valuation, @infleqtion $1.8b SPAC deal.

𝗙𝗼𝘂𝗿 𝗬𝗲𝗮𝗿𝘀 𝗔𝗴𝗼 𝗪𝗮𝘀 𝗧𝗼𝗼 𝗘𝗮𝗿𝗹𝘆, 𝗮𝗻𝗱 𝗙𝗼𝘂𝗿 𝗬𝗲𝗮𝗿𝘀 𝗙𝗿𝗼𝗺 𝗧𝗼𝗱𝗮𝘆 𝗪𝗶𝗹𝗹 𝗕𝗲 𝗧𝗼𝗼 𝗟𝗮𝘁𝗲 – Why I’m Betting on Quantum Technologies Now Four years ago, my colleagues and I wrote in Nature Reviews Physics "How to profit from quantum

For those new to quantum, I created an entanglement tic-tac-toe game to illustrate the concepts. Try it: https://t.co/9FOau2AaXO

Write up from @QuantumDaily https://t.co/4kZsazJGd1

@NokiaBellLabs