Increased pump acceptance bandwidth in spontaneous parametric downconversion process using Bragg reflection waveguides

Abstract

In this paper we show that by suitably tailoring the dispersion characteristics of a Bragg reflection waveguide (BRW) mode, it is possible to achieve efficient photon pair generation over a large pump bandwidth while maintaining narrow signal bandwidth. The structure proposed consists of a high index core BRW with a periodically poled GaN core and periodically stratified cladding made up of alternate layers of $A{l}_{0.02}G{a}_{0.98}N$ and $A{l}_{0.45}G{a}_{0.55}N$. Such photon-pair generators should find applications in realizing compact and stable sources for quantum information processing.

6 pages, 5 figures

References in corpus (9)

• Heralded Generation of Ultrafast Single Photons in Pure Quantum States
• Long distance quantum teleportation of qubits from photons at 1300 nm to photons at 1550 nm wavelength
• Entangling Independent Photons by Time Measurement
• Femtosecond Time-Bin Entangled Qubits for Quantum Communication
• PPLN Waveguide for Quantum Communication
• High quality asynchronous heralded single photon source at telecom wavelength
• GHz QKD at telecom wavelengths using up-conversion detectors
• Generation of correlated photons in controlled spatial modes by down-conversion in nonlinear waveguides
• Experimental investigation of the robustness of partially entangled photons over 11km

Cited by in corpus (3)

• Broadband indistinguishability from bright parametric downconversion in a semiconductor waveguide
• Bragg reflection waveguide as a source of wavelength-multiplexed polarization-entangled photon pairs
• Bragg-Grating Enhanced Narrow-Band Spontaneous Parametric Down Conversion