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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Quantum interferometry based on induced-coherence phenomena has demonstratedthe possibility of undetected-photon measurements. Perturbation in the opticalpath of probe photons can be detected by interference signals generated byquantum mechanically correlated twin photons propagating through a differentpath, possibly at a different wavelength. To the best of our knowledge, thiswork demonstrates for the first time a hybrid-type induced-coherenceinterferometer that incorporates a Mach-Zehnder-type interferometer for visiblephotons and a Michelson-type interferometer for infrared photons, based ondouble-pass pumped spontaneous parametric down-conversion. This configurationenables infrared optical measurements via the detection of near-visible photonsand provides methods for characterizing the quality of measurements byidentifying photon pairs of different origins. The results verify that theinduced-coherence interference visibility is approximately the same as theheralding efficiencies between twin photons along the relevant spatial modes.Applications to both time-domain and frequency-domain quantum-opticalinduced-coherence tomography for three-dimensional test structures aredemonstrated. The results prove the feasibility of practical undetected-photonsensing and imaging techniques based on the presented structure.

Quantum Optical Induced-Coherence Tomography by a Hybrid Interferometer