Generation of squeezed light with monolithic optical parametric oscillator: Simultaneous achievement of phase matching and cavity resonance by temperature control

Abstract

We generate squeezed state of light at 860 nm with a monolithic optical parametric oscillator. The optical parametric oscillator consists of a periodically poled KTiOPO_4 crystal, both ends of which are spherically polished and mirror-coated. We achieve both phase matching and cavity resonance by controlling only the temperature of the crystal. We observe up to -8.0 dB of squeezing with the bandwidth of 142 MHz. Our technique makes it possible to drive many monolithic cavities simultaneously by a single laser. Hence our monolithic optical parametric oscillator is quite suitable to continuous-variable quantum information experiments where we need a large number of highly squeezed light beams.

8 pages, 4 figures

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• Atom-resonant squeezed light from a tunable monolithic ppRKTP parametric amplifier
• Five-Partite Entanglement Generation in A High-Q Microresonator
• Fault-tolerant Coherent H-infinity Control for Linear Quantum Systems
• General analytic theory of classical collinear three wave mixing in a monolithic cavity