Yanpeng Zhang

Enhanced intensity-difference squeezing via energy-level modulations in hot atomic media

Narrow-band intensity-difference squeezing beams have important applications in quantum metrology and gravitational wave detection. The best way to generate narrow-band intensity-difference squeezing is to employ parametrically-amplified four-wave mixing process in high-gain atomic media. Such IDS can be further enhanced by cascading multiple parametrically-amplified four-wave mixing processes in separate atomic media. The complicated experimental setup, added losses and required high-power pump laser with the increase of number of stages can limit the wide uses of such scheme in practical applications. Here, we show that by modulating the internal energy level(s) with additional laser(s), the degree of original intensity-difference squeezing can be substantially increased. With an initial intensity-difference squeezing of

Comparison between optical bistabilities versus power and frequency in a composite cavity-atom system

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Two-dimensional Talbot self-imaging via Electromagnetically induced lattice

dB using parametrically-amplified-non-degenerate four-wave mixing process in a three-level

Multi-mode of Four and Six Wave Parametric Amplified Process

Lambda

Optically induced atomic lattice with tunable near-field and far-field diffraction patterns

-type configuration, the degree of intensity-difference squeezing can be enhanced to

Elemental analysis of the thyroid by laser induced breakdown spectroscopy

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Correlation and squeezing for optical transistor and intensity router applications in diamond NV center

dB/

Modulated vortex six-wave mixing

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Eight-wave mixing parametrical amplification

dB (corrected for losses) when we use one/two laser beam(s) to modulate the involved ground/excited state(s). More importantly, a maximal noise reduction of

Competition and Energy Transfer Between Forward and Backward Four-Wave Mixing via Atomic Coherence

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