1.3k citations · 2.1k across the 13 of their papers we have counts for
13 papers
Towards quantum state tomography of a single polariton state of an atomic ensemble
S. L. Christensen, J. B. Béguin, H. L. Sørensen +5
We present a proposal and a feasibility study for the creation and quantum state tomography of a single polariton state of an atomic ensemble. The collective non-classical and non-…
Entanglement-assisted atomic clock beyond the projection noise limit
Anne Louchet-Chauvet, Jürgen Appel, Jelmer J. Renema +3
We use a quantum non-demolition measurement to generate a spin squeezed state and to create entanglement in a cloud of 10^5 cold cesium atoms, and for the first time operate an ato…
Squeezing of Atomic Quantum Projection Noise
Patrick J. Windpassinger, Daniel Oblak, Ulrich B. Hoff +4
We provide a framework for understanding recent experiments on squeezing of a collective atomic pseudo-spin, induced by a homodyne measurement on off-resonant probe light interroga…
Mesoscopic atomic entanglement for precision measurements beyond the standard quantum limit
J. Appel, P. J. Windpassinger, D. Oblak +3
Squeezing of quantum fluctuations by means of entanglement is a well recognized goal in the field of quantum information science and precision measurements. In particular, squeezin…
Spin squeezing of atomic ensembles by multi-colour quantum non-demolition measurements
M. Saffman, D. Oblak, J. Appel +1
We analyze the creation of spin squeezed atomic ensembles by simultaneous dispersive interactions with several optical frequencies. A judicious choice of optical parameters enables…
Quantum interface between light and atomic ensembles
K. Hammerer, A. S. Sorensen, E. S. Polzik
During the past decade the interaction of light with multi-atom ensembles has attracted a lot of attention as a basic building block for quantum information processing and quantum…