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Integrated Photonic Sensing

Abstract:
Loss is a critical roadblock to achieving photonic quantum-enhanced technologies. We explore a modular platform for implementing integrated photonics experiments and consider the effects of loss at different stages of these experiments, including state preparation, manipulation and measurement. We frame our discussion mainly in the context of quantum sensing and focus particularly on the use of loss-tolerant Holland-Burnett states for optical phase estimation. In particular, we discuss spontaneous four-wave mixing in standard birefringent fibre as a source of pure, heralded single photons and present methods of optimising such sources. We also outline a route to programmable circuits which allow the control of photonic interactions even in the presence of fabrication imperfections and describe a ratiometric characterisation method for beam splitters which allows the characterisation of complex circuits without the need for full process tomography. Finally, we present a framework for performing state tomography on heralded states using lossy measurement devices. This is motivated by a calculation of the effects of fabrication imperfections on precision measurement using Holland-Burnett states.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1088/1367-2630/13/5/055024

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author


Publisher:
IOP Publishing
Journal:
New Journal of Physics More from this journal
Volume:
13
Issue:
5
Article number:
055024
Publication date:
2011-04-01
DOI:
EISSN:
1367-2630
ISSN:
1367-2630


Language:
English
Keywords:
UUID:
uuid:cbdb37f6-1681-4ca0-8a0b-f4d4b96e2f5f
Local pid:
pubs:164091
Source identifiers:
164091
Deposit date:
2012-12-19

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