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physics.ins-det2005★ 4 cited
Ellipsometry noise spectrum, suspension transfer function measurement and closed-loop control of the suspension system in the Q & A experiment
Sheng-Jui Chen, Hsien-Hao Mei, Wei-Tou Ni
The Q & A experiment, aiming at the detection of vacuum birefringence predicted by quantum electrodynamics, consists mainly of a suspended 3.5 m Fabry-Perot cavity, a rotating perm…
physics.ins-det2005★ 7 cited
Suspension of the fiber mode-cleaner launcher and measurement of the high extinction-ratio (10^{-9}) ellipsometer for the Q & A experiment
Hsien-Hao Mei, Sheng-Jui Chen, Wei-Tou Ni
The Q & A experiment, first proposed and started in 1994, provides a feasible way of exploring the quantum vacuum through the detection of vacuum birefringence effect generated by…