CLEO Conference

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CLEO is the premier international forum for scientific and technical optics — uniting the fields of lasers and opto-electronics.

Celebrate World Quantum Day by looking ahead to what’s next. At CLEO 2026, the global photonics and quantum community comes together to explore the breakthroughs shaping our future. Join the conversation and be part of the innovation driving quantum forward. 17-21 May 2026 Secure your spot today.

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Innovation in quantum and electro-optics starts at the material level. Join CLEO 2026 Market Focus and explore how breakthroughs in material science are enabling next-generation performance across communications, sensing, and quantum systems. Register by 6 April to lock in special pricing.

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Present your most recent, high-impact findings at CLEO 2026. Post-deadline submissions are designed for late-breaking results of exceptional significance—reviewed and selected by the Technical Program Committee. Submit by 7 April 2026.

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The CLEO Science Slam Is Back. The 2nd Annual CLEO Science Slam returns in 2026 — submit your applications today! Compete for: $1,000 Grand Prize $500 Second Place Application Deadline: 30 March 2026 Participants must be registered in-person attendees for CLEO 2026 to apply.

Behind the scenes at the #CLEO2026 TPC Meeting in D.C. Our General, Program & Subcommittee Chairs just wrapped an intensive review of thousands of abstracts, and the technical program is officially taking shape. Stay tuned — Author notifications coming soon! Get ready… big things are coming.