Researchers design first quantum grandfather clock

May 27, 2026

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Scientists have created the first complete design for a quantum version of a pendulum clock using a single atom, mirrors and light. The device could advance understanding of timekeeping at the quantum scale.

Matteo Brunelli at Collège de France and colleagues developed a mathematical model that replicates the key elements of a traditional grandfather clock with quantum components. Their design features a cavity formed by two facing mirrors, one of which oscillates, along with an atom that transitions between energy states and emits photons to drive the motion. The atom serves as the escapement mechanism, ensuring stable ticks without external control.

Study explores quantum clocks ticking at multiple speeds

Physicists have published research proposing that a single clock could tick both faster and slower at the same time due to quantum effects. The work combines relativity and quantum mechanics in a novel way. Researchers say advances in atomic clock technology may soon allow the idea to be tested in the lab.

First working nuclear clock built with thorium atoms

June 12, 2026 由 AI 报道

Researchers have created the first functional nuclear clock, using vibrations from radioactive thorium nuclei to measure time. The device marks a milestone after more than two decades of development and could eventually surpass the precision of current atomic clocks.

Asia

China unveils Jiuzhang 4.0 photonic quantum prototype

Science

Physicists create fractional Fermi sea with ultracold atoms

Technology

University of Chicago team simplifies creation of entangled quantum states

Quantum entanglement detected in hand-sized crystal

Researchers at TU Wien have found strong quantum entanglement in a centimeter-sized crystal made of cerium, palladium and silicon. The finding shows that macroscopic materials can exhibit collective quantum behavior. It was published in Nature Physics in 2026.

Oxford physicists create new Schrödinger’s cat quantum state

June 15, 2026 由 AI 报道

Researchers at the University of Oxford have generated a new family of quantum superpositions using nonclassical components in a trapped ion system. The work demonstrates programmable control over exotic motional states and could advance quantum technologies.

Technology