The atomic clocks, whether operating at optical or microwave region, can be divided into two categories according to their working mode, namely the passive clocks and active clocks …
Laser frequency noise contributes a significant limitation to today's best atomic clocks. A proposed solution to this problem is to create a superradiant laser using an optical clock …
We propose a system for observing the correlated phase dynamics of two mesoscopic ensembles of atoms through their collective coupling to an optical cavity. We find a …
Abstract In conventional Bardeen–Cooper–Schrieffer superconductors, electrons with opposite momenta bind into Cooper pairs due to an attractive interaction mediated by …
Today's narrowest linewidth lasers are limited by mirror motion in the reference optical resonator used to stabilize the laser's frequency. Recent proposals suggest that …
GA Kazakov, T Schumm - 2014 European Frequency and Time …, 2014 - ieeexplore.ieee.org
We consider various approaches to the creation of a high-stability active optical frequency standard, where the atomic ensemble itself produces a highly stable and accurate frequency …
Quantum metrology protocols exploiting ensembles of N two-level systems and Ramsey- style measurements are ubiquitous. However, in many cases excess readout noise severely …
Quantum metrology protocols using entangled states of large spin ensembles attempt to achieve measurement sensitivities surpassing the standard quantum limit (SQL), but in …
An ideal superradiant laser on an optical clock transition of noninteracting cold atoms is predicted to exhibit an extreme frequency stability and accuracy far below mHz-linewidth. In …