English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

There is renewed interest in using the coherence between beams generated inseparate down-converter sources for new applications in imaging, spectroscopy,microscopy and optical coherence tomography (OCT). These schemes make use ofcontinuous wave (CW) pumping in the low parametric gain regime, which producesfrequency correlations, and frequency entanglement, between signal-idler pairsgenerated in each single source. But can induced coherence still be observed ifthere is no frequency correlation, so the biphoton wavefunction is factorable?We will show that this is the case, and this might be an advantage for OCTapplications. High axial resolution requires a large bandwidth. For CW pumpingthis requires the use of short nonlinear crystals. This is detrimental sinceshort crystals generate small photon fluxes. We show that the use of ultrashortpump pulses allows improving axial resolution even for long crystal thatproduce higher photon fluxes.

Frequency correlation requirements on the biphoton wavefunction in an induced coherence experiment between separate sources