We report nearly unitary spin squeezing between the magnetic sublevels of the
ground state of $^171$Yb, an atom with an optical clock transition. The
collective spin of $\sim10^3$ atoms inside a cavity is squeezed using light
detuned from the system's resonances. We demonstrate an interferometer
operating with a squeezed state of nearly Heisenberg-uncertainty-limited area
that improves the averaging time over the standard quantum limit (SQL) by a
factor of 3.7(2). The observed metrological gain is limited by the state
readout to 9.4(4) dB, while the generated states offer a spin noise suppression
of 15.8(3) dB and a metrological gain of 12.9(1) dB over the SQL. In the
future, the demonstrated squeezing between nuclear spin states can be directly
mapped onto an electronic optical-clock transition to improve the performance
of an $^171$Yb optical clock.
%0 Generic
%1 braverman2019nearunitary
%A Braverman, Boris
%A Kawasaki, Akio
%A Pedrozo-Peñafiel, Edwin
%A Colombo, Simone
%A Shu, Chi
%A Li, Zeyang
%A Mendez, Enrique
%A Yamoah, Megan
%A Salvi, Leonardo
%A Akamatsu, Daisuke
%A Xiao, Yanhong
%A Vuletić, Vladan
%D 2019
%K cavity experiment squeezing
%T Near-Unitary Spin Squeezing in 171Yb
%U http://arxiv.org/abs/1901.10499
%X We report nearly unitary spin squeezing between the magnetic sublevels of the
ground state of $^171$Yb, an atom with an optical clock transition. The
collective spin of $\sim10^3$ atoms inside a cavity is squeezed using light
detuned from the system's resonances. We demonstrate an interferometer
operating with a squeezed state of nearly Heisenberg-uncertainty-limited area
that improves the averaging time over the standard quantum limit (SQL) by a
factor of 3.7(2). The observed metrological gain is limited by the state
readout to 9.4(4) dB, while the generated states offer a spin noise suppression
of 15.8(3) dB and a metrological gain of 12.9(1) dB over the SQL. In the
future, the demonstrated squeezing between nuclear spin states can be directly
mapped onto an electronic optical-clock transition to improve the performance
of an $^171$Yb optical clock.
@misc{braverman2019nearunitary,
abstract = {We report nearly unitary spin squeezing between the magnetic sublevels of the
ground state of $^{171}$Yb, an atom with an optical clock transition. The
collective spin of ${\sim}10^3$ atoms inside a cavity is squeezed using light
detuned from the system's resonances. We demonstrate an interferometer
operating with a squeezed state of nearly Heisenberg-uncertainty-limited area
that improves the averaging time over the standard quantum limit (SQL) by a
factor of 3.7(2). The observed metrological gain is limited by the state
readout to 9.4(4) dB, while the generated states offer a spin noise suppression
of 15.8(3) dB and a metrological gain of 12.9(1) dB over the SQL. In the
future, the demonstrated squeezing between nuclear spin states can be directly
mapped onto an electronic optical-clock transition to improve the performance
of an $^{171}$Yb optical clock.},
added-at = {2019-02-19T14:19:48.000+0100},
author = {Braverman, Boris and Kawasaki, Akio and Pedrozo-Peñafiel, Edwin and Colombo, Simone and Shu, Chi and Li, Zeyang and Mendez, Enrique and Yamoah, Megan and Salvi, Leonardo and Akamatsu, Daisuke and Xiao, Yanhong and Vuletić, Vladan},
biburl = {https://www.bibsonomy.org/bibtex/2d1cfbe36e86ce57c9b89c15083f5b4b7/marschu},
interhash = {4c94615887e77f38af7f521d74cd2988},
intrahash = {d1cfbe36e86ce57c9b89c15083f5b4b7},
keywords = {cavity experiment squeezing},
note = {cite arxiv:1901.10499Comment: 5 pages, 4 figures},
timestamp = {2019-02-19T14:19:48.000+0100},
title = {Near-Unitary Spin Squeezing in 171Yb},
url = {http://arxiv.org/abs/1901.10499},
year = 2019
}