Direct generation of massive vector-mode entanglement from a polarization-insensitive optical amplifier.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 41996492.
- Also identified by DOI 10.1126/sciadv.aec0001 and PMC identifier 13089346.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Vectorially structured modes, with spatially inhomogeneous polarization, have attracted widespread attention due to their diverse applications across various physical processes. Entangling these modes holds great potential for advancing quantum optical technologies. In this work, we present a polarization-insensitive amplifier based on the four-wave mixing process, capable of directly generating large numbers of entangled vector vortex (VV) modes. When seeded by vacuum fields, the amplifier simultaneously produces 16 sets of two-mode squeezed vacuum states or continuous-variable entangled states, each containing two VV modes. This work opens avenues for developing quantum information processing that fully harnesses the vectorial nature of optical fields.