Phys Rev Lett. 2017 Oct 20;119(16):160501. doi: 10.1103/PhysRevLett.119.160501. Epub 2017 Oct 18.
Physical review letters
M K Olsen
PMID: 29099216 DOI: 10.1103/PhysRevLett.119.160501
We propose and analyze a nonlinear optical apparatus in which the direction of asymmetric steering is controllable within the apparatus, rather than by adding noise to measurements. Using a nondegenerate parametric oscillator with an injected signal field, we show how the directionality and extent of the steering can be readily controlled for output modes that can be up to one octave apart. The two down-converted modes, which exhibit the greater violations of the steering inequalities, can also be controlled to exhibit asymmetric steering in some regimes.