A development in frequency up-conversion of single photons

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Preserving photon stats of quantum optical states throughout frequency conversion is important in modern-day quantum innovations, as quantum networks in some cases require the interfacing of lots of subsystems running in substantially various spectral areas. Existing techniques use just really little frequency shifts and minimal tunability. They likewise experience high insertion loss and Raman sound coming from the products utilized.

In a brand-new research study, researchers reported a development in frequency up-conversion of single photons based upon a hollow-core photonic crystal fiber (PCF) filled with hydrogen gas. Researchers developed a spatio-temporal hologram of molecular vibrations in the gas by promoting Raman scattering. They then utilized this hologram for extremely effective, correlation-preserving frequency conversion of single photons

The system runs at a pressure-tunable wavelength, which might be handy in quantum interactions where effective sources of equivalent single-photons are not available at wavelengths suitable with existing fiber networks

The method integrates quantum optics, gas-based nonlinear optics, hollow-core PCF, and the physics of molecular vibrations to form an effective tool that can run in any spectral band from the ultraviolet to the mid-infrared– an ultra-broad working variety unattainable to the existing innovations. The findings might be utilized to establish fiber-based tools in quantum interactions and quantum-enhanced imaging innovations.

Journal Reference:

  1. R. Tyumenev. Tunable and state-preserving frequency conversion of single photons in hydrogen. DOI: 101126/ science.abn1434

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