Optical-transition atomic clock beyond the standard quantum limit
Abstract
It is proposed to demonstrate a state-of-the-art optical-transition atomic clock that operatessubstantially below the standard quantum limit, using both spin squeezed states, and other manybodyentangled states. The squeezing is implemented between two magnetic sublevels of 171Yb inthe electronic ground state, and then transferred onto the clock transition with a high-fidelity laserpulse. It is expected that a precision improvement better than 10dB for the clock due toentanglement can be achieved, and that the clock can be operated at a precision better than 1 partin 1016 in one second. Furthermore the squeezing will be combined with a multi-ensemble timestaggeredphase-locked-loop optical clock that will substantially extend the coherence time beyondthe dephasing time of the local-oscillator laser. The combination of both approaches shouldeventually enable a precision better than 1 part in 1017 in one second.Accurate timekeeping and inertial navigation, in particular, GPS-free navigation, are central to anumber of naval missions. The present proposal is to develop techniques that will increase thetimekeeping capabilities. They techniques developed in the present proposal will also serve toimprove the performance of navigation sensors based on neutral atoms in a given bandwidth.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 08, 2020
- Source ID
- N000142012428
Entities
People
- Vladan Vuletić
Organizations
- Massachusetts Institute of Technology
- Office of Naval Research
- United States Navy