title: Coupled-resonator-induced transparency with a squeezed vacuum.
abstract: We present the first experimental observation of quantum fluctuation spectra in two coupled optical cavities with an injected squeezed vacuum light. The quadrature components of the reflected squeezed vacuum spectra are measured by phase-sensitive homodyne detector. The experimental results demonstrate coupled-resonator-induced transparency in the quantum regime, in which the electromagnetically-induced-transparency-like characteristic of the absorption and dispersion properties of the coupled optical cavities determines the line shape of the reflected quantum noise spectra.
authors.affiliation: State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, People's Republic of China.
authors.forename: Ke
authors.initials: K
authors.lastname: Di
authors.forename: Changde
authors.initials: C
authors.lastname: Xie
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang