Efficient Atomic Clocks Operated with Several Atomic Ensembles

TY - JOUR

T1 - Efficient Atomic Clocks Operated with Several Atomic Ensembles

AU - Borregaard, Johannes

AU - Sørensen, Anders Søndberg

PY - 2013/8/27

Y1 - 2013/8/27

N2 - Atomic clocks are typically operated by locking a local oscillator (LO) to a single atomic ensemble. In this Letter, we propose a scheme where the LO is locked to several atomic ensembles instead of one. This results in an exponential improvement compared to the conventional method and provides a stability of the clock scaling as (αN)-m/2 with N being the number of atoms in each of the m ensembles and α a constant depending on the protocol being used to lock the LO.

AB - Atomic clocks are typically operated by locking a local oscillator (LO) to a single atomic ensemble. In this Letter, we propose a scheme where the LO is locked to several atomic ensembles instead of one. This results in an exponential improvement compared to the conventional method and provides a stability of the clock scaling as (αN)-m/2 with N being the number of atoms in each of the m ensembles and α a constant depending on the protocol being used to lock the LO.

U2 - 10.1103/PhysRevLett.111.090802

DO - 10.1103/PhysRevLett.111.090802

M3 - Journal article

SN - 0031-9007

VL - 111

JO - Physical Review Letters

JF - Physical Review Letters

IS - 9

M1 - 090802

ER -