Telecom-to-Visible Quantum Frequency Converter on a Silicon Nitride Chip

Abstract

Quantum frequency conversion serves a key role in the realization of hybrid quantum networks by interfacing between wavelength-incompatible platforms. Here we present the first quantum frequency converter connecting visible and telecom domains on a silicon nitride (SiN) chip, using Bragg-scattering four-wave mixing to upconvert heralded single photons from 1260 to 698 nm, which covers a 192 THz span. We examine the noise sources in SiN and devise approaches to suppress noise photons at the source and target frequencies to enable measurements at the single-photon level. We demonstrate an on-chip conversion efficiency of 5% in photon flux and describe design modifications that can be implemented to significantly improve it. Our results pave the way for the implementation of CMOS-compatible devices in quantum networks.

9 pages, 4 figures

References in corpus (20)

• The Quantum Internet
• A photonic quantum information interface
• Visible-to-telecom quantum frequency conversion of light from a single quantum emitter
• Efficient and low-noise single-photon-level frequency conversion interfaces using silicon nanophotonics
• Quantum Frequency Translation of Single-Photon States in Photonic Crystal Fiber
• Quantum Transduction of Telecommunications-band Single Photons from a Quantum Dot by Frequency Upconversion
• Non-reciprocal nonlinear optic induced transparency and frequency conversion on a chip
• Wide-band quantum interface for visible-to-telecommunication wavelength conversion
• Photonic quantum state transfer between a cold atomic gas and a crystal
• Ramsey interference with single photons
• Quantum frequency conversion to telecom of single photons from a nitrogen-vacancy center in diamond
• Quantum Frequency Conversion of a Quantum Dot Single-Photon Source on a Nanophotonic Chip
• Telecom networking with a diamond quantum memory
• Visible nonlinear photonics via high-order-mode dispersion engineering
• Unidirectional frequency conversion in microring resonators for on-chip frequency-multiplexed single-photon sources
• Quantum frequency conversion and strong coupling of photonic modes using four-wave mixing in integrated microresonators
• Single photon emission and single spin coherence of a nitrogen vacancy centre encapsulated in silicon nitride
• Two-stage, low noise quantum frequency conversion of single photons from silicon-vacancy centers in diamond to the telecom C-band
• Theory of ${\chi }^{(2)}$-microresonator-based frequency conversion
• A long-distance quantum-capable internet testbed