Quantum events can unfold on attosecond timescales, making them notoriously difficult to measure. Researchers have now devised a way to measure the duration of quantum transitions without relying on an external clock.
Quantum events can unfold on attosecond timescales, making them notoriously difficult to measure. Researchers have now devised a way to measure the duration of quantum transitions without relying on an external clock. © EPFL 2026/iStock (bymuratdeniz)
18.02.2026
•Zukunftstechnologien
•6 min

Measuring time at the quantum level

Physicists using the Swiss Light Source SLS have found a way to measure the time involved in quantum events and found it depends on the symmetry of the material.

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A vitamin B12 chromophore within the bacterial photoreceptor CarH is activated by an intense pulse of visible laser light and following structural changes visualized in real time by serial femtosecond crystallography at the SwissFEL Cristallina endstation.
A vitamin B12 chromophore within the bacterial photoreceptor CarH is activated by an intense pulse of visible laser light and following structural changes visualized in real time by serial femtosecond crystallography at the SwissFEL Cristallina endstation. © CEA-Irig/IBS/M. Davila
13.02.2026
•Health Innovation
•4 min

Filming a vitamin B12 photoreceptor in action

SwissFEL shows the molecular events that occur when a vitamin B12 photoreceptor absorbs light

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Falsch eingefärbte optische Aufnahme des im Experiment verwendeten Quantenchips.
Falsch eingefärbte optische Aufnahme des im Experiment verwendeten Quantenchips. Die Strukturen auf dem Chip bilden ein Netzwerk von Quantenbits, mit dem Forschende am PSI und an der ETH Zürich Quantenoperationen unter gleichzeitiger Fehlerkorrektur durchführen konnten. © Quantum Device Lab/ETH Zürich, veröffentlicht in Nature Physics
05.02.2026
•Zukunftstechnologien
•7 min

Chirurgie für Qubits

Forschende zeigen, wie Quantenoperationen unter gleichzeitiger Fehlerkorrektur durchgeführt werden können – ein wichtiger Schritt hin zu zuverlässigen Quantencomputern.

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schweizer röntgen
15.01.2026
•Grossforschungsanlagen
•9 min

Schweizer Röntgenlaser enthüllt, wie Elektronen zusammenspielen

Ein neues Röntgenverfahren am SwissFEL macht den «Tanz» der Elektronen sichtbar – und könnte erklären, warum Quanteninformationen so leicht verloren gehen.

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PSI Center for Photon Science

The intense beams of X-ray light at the user facilities operated by the PSI Center for Photon Science shed light on the smallest structures of matter. 

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Sketch of reciprocal space showing regions where opposite-handed chiral phonons exist in LiNbO3, which can be probed by circularly polarized x-ray photons in a resonant inelastic x-ray scattering.
•Future Technologies

Chiral phonons in polar LiNbO3

Materials research

Resonant inelastic x-ray scattering reveals that lattice vibrations can be chiral in a polar material, with phonons having opposite handedness depending on their direction in momentum space.

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