Tunable quantum interference in a 3D integrated circuit.

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 Rep

journal_title

Scientific reports

authors

Chaboyer Z,Meany T,Helt LG,Withford MJ,Steel MJ

doi

10.1038/srep09601

subject

Has Abstract

pub_date

2015-04-27 00:00:00

pages

9601

issn

2045-2322

pii

srep09601

journal_volume

5

pub_type

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