Phase-controlled integrated photonic quantum circuits

Smith, Brian J., Kundys, Dmytro, Thomas-Peter, Nicholas, Smith, P.G.R. and Wamsley, I.A. (2009) Phase-controlled integrated photonic quantum circuits. Optics Express, 17, (16), 13516-13525. (doi:10.1364/OE.17.013516).


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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.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1364/OE.17.013516
ISSNs: 1094-4087 (print)
Related URLs:
Subjects: Q Science
T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology
Q Science > QC Physics
Divisions : University Structure - Pre August 2011 > Optoelectronics Research Centre
ePrint ID: 70892
Accepted Date and Publication Date:
3 August 2009Published
Date Deposited: 09 Mar 2010
Last Modified: 31 Mar 2016 13:00
Engineered photonic qubits for integrated optical quantum computing networks
Funded by: EPSRC (EP/C013956/1)
Led by: Peter George Smith
1 January 2006 to 30 September 2009

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