TY - JOUR
T1 - Bragg reflection waveguides as integrated sources of entangled photon pairs
AU - Zhukovsky, Sergei V.
AU - Helt, Lukas G.
AU - Abolghasem, Payam
AU - Kang, Dongpeng
AU - Sipe, John E.
AU - Helmy, Amr S.
PY - 2012/9/1
Y1 - 2012/9/1
N2 - We explore the potential of versatile and efficient entangled photon pair generation by spontaneous parametric downconversion in Bragg reflection waveguides. By employing a quantum treatment of modes in channel waveguides, and by accounting for group velocity dispersion in the modes, the quantum state of the generated biphotons is realistically calculated. The pair production rate is predicted to reach 4 × 108 pairs / s /nm/mW of pump light in a 2mm-long structure, on parwith or exceeding the performance of previously reported designs. This is attributable to an enhanced nonlinear interaction through tight mode confinement in the waveguide. Strategies for device performance optimization and phase matching wavelength tunability are outlined and numerically demonstrated. The proposed design platformis versatile and allows photon pair generation with controllable flux, bandwidth, Schmidt number, and degree of polarization entanglement. The possibility of monolithic integration with a diode laser pump offers a way to design an electrically pumped entangled photon source.
AB - We explore the potential of versatile and efficient entangled photon pair generation by spontaneous parametric downconversion in Bragg reflection waveguides. By employing a quantum treatment of modes in channel waveguides, and by accounting for group velocity dispersion in the modes, the quantum state of the generated biphotons is realistically calculated. The pair production rate is predicted to reach 4 × 108 pairs / s /nm/mW of pump light in a 2mm-long structure, on parwith or exceeding the performance of previously reported designs. This is attributable to an enhanced nonlinear interaction through tight mode confinement in the waveguide. Strategies for device performance optimization and phase matching wavelength tunability are outlined and numerically demonstrated. The proposed design platformis versatile and allows photon pair generation with controllable flux, bandwidth, Schmidt number, and degree of polarization entanglement. The possibility of monolithic integration with a diode laser pump offers a way to design an electrically pumped entangled photon source.
UR - http://www.scopus.com/inward/record.url?scp=84866424945&partnerID=8YFLogxK
U2 - 10.1364/JOSAB.29.002516
DO - 10.1364/JOSAB.29.002516
M3 - Article
AN - SCOPUS:84866424945
SN - 0740-3224
VL - 29
SP - 2516
EP - 2523
JO - Journal of the Optical Society of America B: Optical Physics
JF - Journal of the Optical Society of America B: Optical Physics
IS - 9
ER -