Entanglement-assisted atomic clock beyond the projection noise limit
By A. Louchet-Chauvet, J. Appel, J. Renema, D. Oblak, N. Kjaergaard, Eugene Simon Polzik. 2009
157 citations recorded by the source corpus.
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 clock-interrogation 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.
Subfields: Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/27125248dd1c4d6551199cdd0f76fce8523c4900
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In Atomic and Molecular Physics, and Optics
- Franco Nori
- C. Gross
- Chang-pu Sun
- Xiaoguang Wang
- Jian Ma
- Markus K. Oberthaler
- Augusto Smerzi
- Philipp Treutlein
Citations in the corpus
- Quantum spin squeezing (2010, methodology): “Then by performing a quantum nondemolition (QND) measurement of the output light, the atomic ensembles can be squeezed conditioned to the measurement results [74, 75, 76, 77, 78, 79, 80, 73, 81, 82, 38, 83, 84, 85, 86, 40, 87, 88, 89, 90, 42, 91, 92, 93, 94, 95, 23, 24, 96, 97, 25, 98, 99, 100, 101]”
- Spin squeezing, entanglement and quantum metrology with Bose–Einstein condensates (2012, methodology): “[85] Louchet-Chauvet A, Appel J, Renema J J, Oblak D, Kjaergaard N, and Polzik E S 2010 Entanglementassisted atomic clock beyond the projection noise limit New J.”
- Quantum metrology with nonclassical states of atomic ensembles (2016, methodology): “, 2001), ensembles of cold thermal atoms (Hosten et al., 2016a; Leroux et al., 2010b; Louchet-Chauvet et al., 2010) and Bose-Einstein condensates (Gross et al.”