Raman-free, noble-gas-filled PCF source for ultrafast, very bright twin-beam squeezed vacuum
Martin A. Finger, Timur Sh. Iskhakov, Nicolas Y. Joly, Maria V., Chekhova, Philip St.J. Russell
TL;DR
This paper introduces a Raman-free, noble-gas-filled photonic crystal fiber source that generates ultra-bright, broadband twin-beam squeezed vacuum with strong photon correlations, tunability, and minimal mode content, advancing quantum optics applications.
Contribution
It presents a novel, Raman-free twin-beam source based on modulational instability in high-pressure argon-filled hollow-core photonic crystal fiber, with record brightness and broad tunability.
Findings
Record brightness of ~2500 photons per mode.
Ultra-broadband (~50 THz) twin beams with minimal modes.
Frequency tunability and strong photon-number correlations.
Abstract
We report a novel source of twin beams based on modulational instability in high-pressure argon-filled hollow-core kagom\'e-style photonic-crystal fibre. The source is Raman-free and manifests strong photon-number correlations for femtosecond pulses of squeezed vacuum with a record brightness of ~2500 photons per mode. The ultra-broadband (~50 THz) twin beams are frequency tunable and contain one spatial and less than 5 frequency modes.
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