Phase-sensitive amplification via coherent population oscillations in metastable helium at room temperature

Abstract

We report our experimental results on phase-sensitive amplification (PSA) in non-degenerate signal-idler configuration using ultra-narrow coherent population oscillations in metastable helium at room temperature. We achieved a high PSA gain of nearly 7 with a bandwidth of 200 kHz, by using the system at resonance in a single-pass scheme. Further, the measured minimum gain is close to the ideal value, showing that we have a pure PSA. This is also confirmed from our phase-to-phase transfer curves measurements, illustrating that we have a nearly perfect squeezer, which is interesting for a variety of applications.

References in corpus (8)

• Observation of squeezed light with 10dB quantum noise reduction
• Strong relative intensity squeezing by 4-wave mixing in Rb vapor
• Quantum memory for squeezed light
• Experimental demonstration of a squeezing enhanced power recycled Michelson interferometer for gravitational wave detection
• Experimental generation of multiple quantum correlated beams from hot rubidium vapor
• Ultranarrow CPO resonance in a Λ-type atomic system
• Squeezed-light source for the superresolving microscopy
• Spatial Multi-Mode Structure of Atom-Generated Squeezed Light

Cited by in corpus (3)

• Coherent control and wave mixing in an ensemble of silicon vacancy centers in diamond
• Generating quantum correlated twin beams by four-wave mixing in hot cesium vapor
• Phase Sensitive Amplification Enabled by Coherent Population Trapping