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Phase-controlled integrated photonic quantum circuits
Brian J.Smith1,2, Dmytro Kundys3, Nicholas Thomas-Peter2, P.G.R.Smith3, and I.A.Walmsley2
1. Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, 117543 Singapore, Singapore
2. University of Oxford, Clarendon Laboratory, Parks Road, Oxford, OX1 3PU, UK
3. Optoelectronics Research Centre, University of Southampton, UK
Abstract
Scalable photonic quantum technologies are based on multiple nested interferometers. To realize this architecture, integrated optical structures are needed to ensure stable, controllable, and repeatable operation. Here we show a key proof-of-principle demonstration of an externally controlled photonic quantum circuit based upon UV-written waveguide technology. In particular, we present non-classical interference of photon pairs in a Mach-Zehnder interferometer constructed with X couplers in an integrated optical circuit with a thermo-optic phase shifter in one of the interferometer arms.
Optics Express (2009) Vol.17(16) pp.13516-13525
Publisher′s URL: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-17-16-13516
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Copyright University of Southampton 2006