Atomic, Molecular, Optical Science

AMOS encompasses the research in
atomic, molecular, and optical science
at the Weizmann Institute of Science.

AMOS Research Areas

AMOS is a center for quantum physics with atomic, molecular, and optical systems, at the Weizmann Institute of Science. The center includes 15 research groups and activities ranging across most contemporary topics in AMO physics - from atto-second pulses and intense lasers, through precision spectroscopy of ultracold atoms, molecules or ions, to quantum information and quantum optics. AMOS members hold faculty appointments in both the Physics and Chemistry Faculties at the Weizmann Institute of Science.

A wide range of interests and scientific excellence contribute to making AMOS one of Israel's leading research centers. AMOS scientists publish annually numerous scientific manuscripts in leading journals.

News

  • Date: June 18, 2026

    Scientific Council Prize for Chemistry

  • Date: December 2, 2025

    Optica

  • Date: January 15, 2025

    2024 Tenne Family Prize

All News

Seminars

  • Date:
    28
    Jul 2026
    13:15

    Supercoherence: Interaction-Protected Collective Order in Disordered Systems

    Speakers
    Dr. Alexey Gorlach

    Disorder normally destroys coherence by causing different components to evolve at different frequencies. In this talk, I will show how suitably engineered interactions can instead create a robust collective coherent mode—a phenomenon we call supercoherence.
    In disordered ensembles of two-level systems, long-range excitation exchange can drive a dynamical phase transition from complete dephasing to finite long-time coherence. Quantum mechanically, interactions isolate collective states from the disorder-sensitive spectrum by an energy gap. These states form an approximately harmonic ladder, suggesting a route toward disorder-resilient quantum memories built from imperfect components.
    Supercoherence does not require all-to-all coupling. Sparse networks with only a few long-range links can provide the necessary protection, provided they have no macroscopic bottlenecks. This leads to a simple design principle: engineer the interaction network rather than perfecting every component.
    Finally, I will discuss how the same idea may be applied to multimode optical fibers to suppress modal dispersion and generate stable, focused light.

    Read more

Publications

  • Sensing Single-Molecule Magnets with Nitrogen-Vacancy Centers

    Smooha A., Kumar J., Yudilevich D., Rosenberg J. W., Bayer V., Stöhr R., Denisenko A., Bendikov T., Kossoy A., Pinkas I., Tan H., Yan B., Sarkar B., van Slageren J. & Finkler A. (2026) Nano Letters.
    Single-molecule magnets (SMMs) are molecules that can function as nanoscale magnets with potential use as magnetic memory bits. While SMMs can retain magnetization at low temperatures, characterizing them on surfaces and at room temperature remains challenging and requires specialized nanoscale techniques. Here, we use single nitrogen-vacancy (NV) centers in diamond as a highly sensitive, broadband magnetic field sensor to detect the magnetic noise of cobalt-based SMMs deposited on a diamond surface. We measured the NV relaxation and decoherence times at 296 K and at 58 K, observing a significant influence of the SMMs on them. From this, we infer the SMMs magnetic noise spectral density (NSD) and underlying magnetic properties. Moreover, we observe the effect of an applied magnetic field on the SMMs NSD at low temperatures. The method provides nanoscale sensitivity for characterizing SMMs under realistic conditions relevant to their use as surface-bound memory units.
  • Einstein's equations in electromagnetic media

    Erkul E. E. & Leonhardt U. (2026) Europhysics Letters.
    In this paper, we extend Plebanski's mapping to encode the Einstein equations in Arnowitt-Deser-Misner (ADM) form within a bianisotropic electromagnetic medium. We realise this by translating the ADM constraints and evolution equations into dynamical conditions on the medium's constitutive parameters. These transformed equations are then linearised in vacuum to derive gravitational-wave analogues as perturbations of the optical medium.