Phase-controlled integrated photonic quantum circuits

Brian J. Smith, Dmytro Kundys, Nicholas Thomas-Peter, P. G. R. Smith, I. A. Walmsley

Research output: Contribution to journalArticle

95 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)13516-13525
Number of pages10
JournalOptics Express
Volume17
Issue number16
DOIs
Publication statusPublished - 3 Aug 2009

Keywords

  • CHANNEL WAVE-GUIDES
  • SILICA-ON-SILICON
  • LINEAR OPTICS
  • X-COUPLERS
  • COMMUNICATION
  • INTERFERENCE
  • ENTANGLEMENT
  • CRYPTOGRAPHY
  • DESIGN
  • STATE

Cite this

Smith, B. J., Kundys, D., Thomas-Peter, N., Smith, P. G. R., & Walmsley, I. A. (2009). Phase-controlled integrated photonic quantum circuits. Optics Express, 17(16), 13516-13525. https://doi.org/10.1364/OE.17.013516