TY - JOUR
T1 - Spontaneous parametric down-conversion and quantum walks in arrays of quadratic nonlinear waveguides
AU - Solntsev, Alexander S.
AU - Sukhorukov, Andrey A.
AU - Neshev, Dragomir N.
AU - Kivshar, Yuri S.
PY - 2012/1/10
Y1 - 2012/1/10
N2 - We analyze the process of photon-pair generation with simultaneous quantum walks in a quadratic nonlinear waveguide array. We demonstrate that the spontaneous parametric down-conversion in the array allows for creating quantum states with strongly pronounced spatial correlations, which are qualitatively different from those possible in bulk crystals or through quantum walks in linear waveguide arrays. Most importantly, the photon correlations can be controlled entirely classically by varying the spatial profile of the pump beam or the phase-matching conditions.
AB - We analyze the process of photon-pair generation with simultaneous quantum walks in a quadratic nonlinear waveguide array. We demonstrate that the spontaneous parametric down-conversion in the array allows for creating quantum states with strongly pronounced spatial correlations, which are qualitatively different from those possible in bulk crystals or through quantum walks in linear waveguide arrays. Most importantly, the photon correlations can be controlled entirely classically by varying the spatial profile of the pump beam or the phase-matching conditions.
UR - http://www.scopus.com/inward/record.url?scp=84855696030&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.108.023601
DO - 10.1103/PhysRevLett.108.023601
M3 - Article
SN - 0031-9007
VL - 108
JO - Physical Review Letters
JF - Physical Review Letters
IS - 2
M1 - 023601
ER -