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Science explained

The Caltech Science Exchange brings expert insight to the scientific questions that define our time.

Essential Perspective

Find trustworthy answers, clear explanations, and fact-driven conversation on critical topics in science and technology.

Have a Question?

Caltech is committed to building awareness and understanding of the scientific issues that affect our world and our lives. Have a question? Submit it here.

Quantum Science and Technology

Quantum science emerged from studies of the smallest objects in nature. Today, it promises to deepen our understanding of the universe and deliver groundbreaking technology, from quantum computers to ultra-precise measuring devices to next-generation materials, with many of these advances happening at Caltech. Learn about the basic concepts underlying the field of quantum science, including superposition, entanglement, and the uncertainty principle. Discover how quantum principles and our understanding of them have been harnessed to benefit society and catalyze new research across disciplines.