Quantum walks of photon pairs in twisted waveguide arrays

2nd International School and Conference Saint-Petersburg OPEN on Optoelectronics, Photonics, Engineering and Nanostructures

Vavulin, D.N.^1 ; Sukhorukov, A.A.^2

ITMO University, 49 Kronverksky Ave., St.Petersburg

197101, Russia^1

Nonlinear Physics Centre, ResearchSchool of Physics and Engineering, AustralianNationalUniversity, Canberra

ACT

2601, Australia^2

关键词: Central axis;    Coupling coefficient;    Photon pairs;    Propagation direction;    Quantum walk;    Schrodinger type equation;    Waveguide array;    Waveguide bending;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/643/1/012050/pdf
DOI  :  10.1088/1742-6596/643/1/012050

来源: IOP

【 摘 要 】

We consider an array of closely spaced optical waveguides, which are twisted around a central axis along the propagation direction. We derive Schrodinger-type equation of the biphoton wavefunction, taking into account the waveguide bending through the appearance of additional phase in the coupling coefficients. We present an example of the evolution of quantum photon-pair state.