De Yanhong Xiao
Weak measurement (WM) can amplify otherwise invisible small signals and hence promise great potentials for many precision measurements. I will describe a spectroscopy method based on weak measurement which enables resonance linewidth below the coherence-lifetime-limit. We experimentally demonstrated resonance linewidth about 0.1Hz and magnetometer sensitivity at the fT/Hz0.5 level in a room temperature vapor cell. Then, I show that weak measurement can be also used to enhance spin squeezing, a process that allows metrology with precision below the standard quantum limit. A theoretical proposal will be described, and experiment progress of spin squeezing of 1011 atoms will also be reported.
De Florian Marquardt
De Gary Steele
De Hendrik Bluhm
De Jean-Michel Raimond
De Alain Sarlette
De Sylvain Schwartz
De Sophia Economou
De Klaus Mølmer
De Howard M. Wiseman
De Michel Devoret
De Akira Furusawa
De Yanhong Xiao
De Alex Retzker
De Nicolas Didier
De Ivan Deutsch
De Mankei Tsang
De Aashish Clerk
De Valentina Parigi
De Rebing Wu
De Michael Biercuk
De Thomas Ayral
De Nana Liu
De Nana Liu
