r/quantum↗
Quantum Mechanics - Physics Community
Scientific discourse about quantum mechanics and related fields. Not for discussions about interpretations or speculative theories.
94k subscribers132 posts / mo in Sep 2026 (incl. ~8% by known bots)91 authors / mosince 2009
r/quantum has 94k members (+27% over the last 12 months). It gets about 132 posts a month from 91 people. Top topics: Quantum Computing, Quantum Computing Advances and Quantum Computing Trends.
When to post on r/quantum
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How r/quantum has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/quantum
Top topics
Share of the subreddit's posts
- Quantum Computing2.9%
- Quantum Computing Advances2.1%
- Quantum Computing Trends1.6%
- Quantum Computing Advances1.2%
- Moore's Law Transistors0.3%
Brands people mention
Most-mentioned brands and sites, last 12 months
- arXiv.org e-Print archive
- Doi
- Nature
- Zenodo
- Substack
Everything else about r/quantum
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research