TY - JOUR
T1 - Spin squeezing of atomic ensembles via nuclear-electronic spin entanglement
AU - Fernholz, Thomas
AU - Krauter, Hanna
AU - Jensen, Kasper
AU - Sherson, Jacob Friis
AU - Sørensen, Anders Søndberg
AU - Polzik, Eugene Simon
PY - 2008
Y1 - 2008
N2 - We demonstrate spin squeezing in a room temperature ensemble of1012 Cesium atoms using their internal structure,where the necessary entanglement is created between nuclear andelectronic spins of each individual atom. This state providesimprovement in measurement sensitivity beyond the standard quantumlimit for quantum memory experiments and applications in quantummetrology and is thus a complementary alternative to spinsqueezing obtained via inter-atom entanglement. Squeezing of thecollective spin is verified by quantum state tomography.
AB - We demonstrate spin squeezing in a room temperature ensemble of1012 Cesium atoms using their internal structure,where the necessary entanglement is created between nuclear andelectronic spins of each individual atom. This state providesimprovement in measurement sensitivity beyond the standard quantumlimit for quantum memory experiments and applications in quantummetrology and is thus a complementary alternative to spinsqueezing obtained via inter-atom entanglement. Squeezing of thecollective spin is verified by quantum state tomography.
U2 - 10.1103/PhysRevLett.101.073601
DO - 10.1103/PhysRevLett.101.073601
M3 - Journal article
C2 - 18764532
SN - 0031-9007
VL - 101
SP - 073601
JO - Physical Review Letters
JF - Physical Review Letters
IS - 7
ER -