Isidor Isaac Rabi

Biography

Born in Austria-Hungary, he emigrated to the USA. He studied at Cornell and Columbia Universities. He worked at Columbia University, where he built a strong school of atomic physics. During the war, he participated in radar development and the Manhattan Project. He won the Nobel Prize in Physics (1944) for his resonance method for measuring nuclear magnetic moments. He served as a science advisor to the US President.

Key discoveries

Magnetic resonance method: developed a technique for precise measurement of nuclear magnetic moments (1937).

Rabi oscillations: theoretically described and experimentally observed periodic quantum transitions in two-level systems, underlying the operation of qubits.

Atomic clocks: his methods led to the creation of the first atomic frequency standards.

Thorium Nuclear Clocks: A New Frontier of Precision

In thorium-229 nuclear clocks, one 'tick' lasts 641 seconds — like a pendulum in syrup. The hardest part is eliminating interference from the crystal. If successful, the clocks will surpass everything created before and pave the way for testing fundamental theories.

arXiv:2511.13017 · 2025-11-17

Diamond Detective: Magnetic Dance Reveals the Secrets of Liquids

A diamond plate with magnetic particles on DNA strands analyzes liquid by the trembling of particles. Their movement changes with thickness and composition: in syrup—slow, in alcohol—fast. The diamond reads the magnetic echo and creates a precise portrait of the liquid—no reagents, no waiting.

arXiv:2606.04064 · 2026-06-02

Tiny Crystal Measures Temperature and Magnetic Field Simultaneously

Scientists built a sensor from boron nitride — a transparent cousin of graphite. It contains a glowing speck whose hue shifts with heat and flicker rate changes with magnetism. So one miniature device replaces both thermometer and magnetometer, with no cross-talk. The technology will find use in mic

arXiv:2606.19978 · 2026-06-18

A Diamond Defect Steered by Light Remembers a Quantum Secret

Scientists turned a tiny defect in diamond—a nickel atom with missing neighbors—into an all-optical qubit. It's controlled by a laser, emits in the infrared, and holds a quantum state 3400 times longer than usual, running in a standard fridge.