Ultratunable quantum frequency conversion in photonic crystal fiber

Abstract

Quantum frequency conversion of single photons between wavelength bands is a key enabler to realizing widespread quantum networks. We demonstrate the quantum frequency conversion of a heralded 1551 nm photon to any wavelength within an ultrabroad (1226 - 1408 nm) range in a group-velocity-symmetric photonic crystal fiber (PCF), covering over 150 independent frequency bins. The target wavelength is controlled by tuning only a single pump laser wavelength. We find internal, and total, conversion efficiencies of 12(1)% and 1.4(2)%, respectively. For the case of converting 1551 nm to 1300 nm we measure a heralded $g^{(2)}(0)=0.25(6)$ for converted light from an input with $g^{(2)}(0)=0.034(8)$. We expect that this PCF can be used for a myriad of quantum networking tasks.

5 pages, 4 figures

References in corpus (10)

• The Quantum Internet
• Silica-on-Silicon Waveguide Quantum Circuits
• Frequency-encoded photonic qubits for scalable quantum information processing
• Quantum Frequency Translation of Single-Photon States in Photonic Crystal Fiber
• A Quantum Pulse Gate based on Spectrally Engineered Sum Frequency Generation
• Continuous-Variable Quantum Computing in Optical Time-Frequency Modes using Quantum Memories
• Ultrafast time-division demultiplexing of polarization-entangled photons
• Optimizing optical Bragg scattering for single-photon frequency conversion
• Toward a Quantum Memory in a Fiber Cavity Controlled by Intracavity Frequency Translation
• Resource-efficient frequency conversion for quantum networks via sequential four-wave mixing