Entanglement-assisted atomic clock beyond the projection noise limit

TY - JOUR

T1 - Entanglement-assisted atomic clock beyond the projection noise limit

AU - Louchet, Anne Marie Marthe

AU - Appel, Jürgen

AU - Renema, Jelmer Jan

AU - Oblak, Daniel

AU - Kjærgaard, Niels

AU - Polzik, Eugene Simon

PY - 2010/6/28

Y1 - 2010/6/28

N2 - We use a quantum non-demolition measurement to generate a spin squeezed state and to create entanglement in a cloud of 105 cold cesium atoms. For the first time we operate an atomic clock improved by spin squeezing beyond the projection noise limit in a proof-of-principle experiment. For a clockinterrogation time of 10 μs, the experiments show an improvement of 1.1 dB in the signal-to-noise ratio, compared to the atomic projection noise limit.

AB - We use a quantum non-demolition measurement to generate a spin squeezed state and to create entanglement in a cloud of 105 cold cesium atoms. For the first time we operate an atomic clock improved by spin squeezing beyond the projection noise limit in a proof-of-principle experiment. For a clockinterrogation time of 10 μs, the experiments show an improvement of 1.1 dB in the signal-to-noise ratio, compared to the atomic projection noise limit.

U2 - 10.1088/1367-2630/12/6/065032

DO - 10.1088/1367-2630/12/6/065032

M3 - Journal article

SN - 1367-2630

VL - 12

SP - 065032

JO - New Journal of Physics

JF - New Journal of Physics

IS - 6

ER -