Fast path and polarisation manipulation of telecom wavelength single   photons in lithium niobate waveguide devices
  We demonstrate fast polarisation and path control of photons at 1550 nm in lithium niobate waveguide devices using the electro-optic effect. We show heralded single photon state engineering, quantum interference, fast state preparation of two entangled photons and feedback control of quantum interference. These results point the way to a single platform that will enable the integration of nonlinear single photon sources and fast reconfigurable circuits for future photonic quantum information science and technology. 
Damien Bonneau, Mirko Lobino, Pisu Jiang, Chandra M. Natarajan,   Michael G. Tanner, Robert H. Hadfield, Sanders N. Dorenbos...
quant-ph