Proposal for noise-free visible-telecom quantum frequency conversion through third-order sum and difference frequency generation

Abstract

Quantum frequency conversion (QFC) between the visible and telecom is a key functionality to connect quantum memories over long distances in fiber-based quantum networks. Current QFC methods for linking such widely-separated frequencies, such as sum/difference frequency generation and four-wave mixing Bragg scattering, are prone to broadband noise from the pump laser(s). To address this issue, we propose to use third-order sum/difference frequency generation (TSFG/TDFG) for an upconversion/downconversion QFC interface. In this process, two pump photons combine their energy and momentum to mediate frequency conversion across visible and telecom bands, bridging a large spectral gap with long-wavelength pump pho-tons, which is particularly beneficial from the noise perspective. We show that waveguide-coupled silicon nitride microring resonators can be designed for efficient QFC between 606 nm and 1550 nm via a 1990 nm pump through TSFG/TDFG. We simulate the device dispersion and coupling, and from the simulated parameters estimate that the frequency conversion can be efficient (>80 %) at 50 mW pump power. Our results suggest that microresonator-based TSFG/TDFG is promising for compact, scalable, and low power QFC across large spectral gaps.

arXiv comment8 pages, 4 figures

References in corpus (13)

• The Quantum Internet
• All-optical signal processing platforms for CMOS compatible integrated nonlinear optics
• Second-Harmonic Generation in Silicon Nitride Ring Resonators
• 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
• Chip-integrated visible-telecom photon pair sources for quantum communication
• Quantum Frequency Translation of Single-Photon States in Photonic Crystal Fiber
• Quantum frequency conversion to telecom of single photons from a nitrogen-vacancy center in diamond
• Two-photon interference in the telecom C-band after frequency conversion of photons from remote quantum emitters
• Efficient telecom-to-visible spectral translation through ultra-low power nonlinear nanophotonics
• Broadband Resonator-Waveguide Coupling for Efficient Extraction of Octave Spanning Microcombs
• Quantum Frequency Conversion of a Quantum Dot Single-Photon Source on a Nanophotonic Chip
• Quantum frequency conversion of memory-compatible single photons from 606 nm to the telecom C-band