Abstract:
:Integrated photonics promises solutions to questions of stability, complexity, and size in quantum optics. Advances in tunable and non-planar integrated platforms, such as laser-inscribed photonics, continue to bring the realisation of quantum advantages in computation and metrology ever closer, perhaps most easily seen in multi-path interferometry. Here we demonstrate control of two-photon interference in a chip-scale 3D multi-path interferometer, showing a reduced periodicity and enhanced visibility compared to single photon measurements. Observed non-classical visibilities are widely tunable, and explained well by theoretical predictions based on classical measurements. With these predictions we extract Fisher information approaching a theoretical maximum. Our results open a path to quantum enhanced phase measurements.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Chaboyer Z,Meany T,Helt LG,Withford MJ,Steel MJdoi
10.1038/srep09601subject
Has Abstractpub_date
2015-04-27 00:00:00pages
9601issn
2045-2322pii
srep09601journal_volume
5pub_type
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