2014/05/31 by Peter C. Humphreys, Benjamin J. Metcalf, Justin B. Spring +5
Computer Science · Materials Science · Physics and Astronomy · #Diamond and Carbon-based Materials Research #Mechanical and Optical Resonators #Neural Networks and Reservoir Computing #Phase (matter) #Photonics #Polarization (electrochemistry) #Quantum #Quantum dot #Quantum imaging #Quantum optics #Quantum sensor #Refractive index #physics.optics #quant-ph
paper · pdf · doi:10.1364/oe.22.021719
published as Optics Express, Vol. 22, Issue 18, pp. 21719-21726 (2014) · 7 pages, 5 figures. Updated to be consistent with published version
openalex publication_date 2014/09/02 · arxiv created 2014/11/21 · arxiv updated 2014/11/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present a practical method for active phase control on a photonic chip that has immediate applications in quantum photonics. Our approach uses strain-optic modification of the refractive index of individual waveguides, effected by a millimeter-scale mechanical actuator. The resulting phase change of propagating optical fields is rapid and polarization-dependent, enabling quantum applications that require active control and polarization encoding. We demonstrate strain-optic control of non-classical states of light in silica, showing the generation of 2-photon polarisation N00N states by manipulating Hong-Ou-Mandel interference. We also demonstrate switching times of a few microseconds, which are sufficient for silica-based feed-forward control of photonic quantum states.