US and German researchers published a theoretical blueprint in Physical Review Letters for an atomic clock driven by a superradiant, highly synchronized laser where atoms act collectively.
Key Takeaways
The design revives a concept first proposed in the 1990s, now reframed as a viable path toward atomic clocks with far narrower linewidths than current standards.
Core mechanism: atoms work in concert (superradiance) rather than independently, enabling tighter phase coherence in the lasing output.
Lead authors Jarrod Reilly (University of Colorado) and Simon Jäger (University of Bonn) led a cross-Atlantic collaboration on the theoretical framework.
Narrowest-linewidth lasers ever achieved is the explicit target claim, which would directly impact timekeeping precision and GPS, metrology, and quantum sensing applications.
Currently a theoretical blueprint only; no experimental demonstration reported.
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@wglb: Links directly to the Physical Review Letters abstract for readers wanting the primary source.
