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Klaus Mølmer

Random search for a dark resonance

Publikation: KonferencebidragPosterForskning


A pair of resonant laser fields can drive a three-level system into a dark state where it ceases to absorb and
emit radiation due to destructive interference. We propose a scheme to search for this resonance by randomly
changing the frequency of one of the fields each time a fluorescence photon is detected. The longer the system
is probed, the more likely the frequency is close to resonance and the system populates the dark state. Due to
the correspondingly long waiting times between detection events, the evolution is nonergodic and the precision
of the frequency estimate does not follow from the conventional Cramér-Rao bound of parameter estimation.
Instead, a Lévy statistical analysis yields the scaling of the estimation error with time for precision probing of
this kind.
Udgivelsesår14 mar. 2017
Antal sider1
StatusUdgivet - 14 mar. 2017
BegivenhedAPS March Meeting 2017 - Ernest N. Morial Convention Center, New Orleans, USA
Varighed: 13 mar. 201717 mar. 2017


KonferenceAPS March Meeting 2017
LokationErnest N. Morial Convention Center
ByNew Orleans


  • Quantum measurments, Pameter estimation, Lévy statistics

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