2016/08/02 by J. Lugani, Jasleen Lugani, C. Banerjee +12 · 1 citation
Physics and Astronomy · #Atomic and Subatomic Physics Research #Atomic physics #Bandwidth (computing) #Cold Atom Physics and Bose-Einstein Condensates #Helium #Materials science #Metastability #Optics #Phase (matter) #Physics #Population #Quantum mechanics #Quantum optics and atomic interactions #Telecommunications #quant-ph
paper · pdf · doi:10.1364/ol.41.004731
arxiv created 2016/08/02 · openalex publication_date 2016/10/06 · arxiv updated 2016/11/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this Letter, we report our experimental results on phase-sensitive amplification (PSA) in a nondegenerate signal-idler configuration using ultranarrow 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 nearly 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.