Hi, I'm Markus Baumann.

Latest research

The Fundamental Memory Ceiling of Noisy Quantum Reservoirs

Markus Baumann, Jonas Stein, and Claudia Linnhoff-Popien · Submitted to Physical Review Letters, 19 October 2026

Size-independent bounds on input memory under local depolarizing noise, with fresh-qubit supply as the limiting resource.

Full manuscript and Supplemental Material · Code and data

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• Principles

  Updated: 28 Jul, 2026

  • 5 min read

  A few principles I have learned from experience and try to keep in mind.

• Every Solution Starts With a Guess

  Published: 6 Mar, 2026

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  Problem solving works by noticing a problem, making a risky guess, testing it, correcting errors, and repeating.

• Five Years of Brain Fog on Reddit: What 2,073 Threads and 151,767 Comments Reveal

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  A five-year Reddit analysis of brain fog across 2,073 threads and 151,767 comments, showing which interventions dominate attention, which patterns look strongest, which ideas look divisive, and which quieter signals seem underrated.

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  A minimal terminal-first training tracker for bodyweight, Zone 2, Zone 5 / HIIT, and strength work.

• Building a Brainfog Decision Tree MVP

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  A small UI prototype that turns a brainfog checklist into an animated decision tree with practical interventions.

• Current Stack and Workflow

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  The tools and habits I rely on to keep development fast and reliable.

• How I Build Products

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  My lightweight approach to moving from idea to production without losing quality.

• Welcome to My New Site

  Published: 10 Feb, 2026

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  Why I rebuilt this site, what I'll publish here, and what to expect next.