Two-stage, low noise quantum frequency conversion of single photons from silicon-vacancy centers in diamond to the telecom C-band

Abstract

The silicon-vacancy center in diamond holds great promise as a qubit for quantum communication networks. However, since the optical transitions are located within the visible red spectral region, quantum frequency conversion to low-loss telecommunication wavelengths becomes a necessity for its use in long-range, fiber-linked networks. This work presents a highly efficient, low-noise quantum frequency conversion device for photons emitted by a silicon-vacancy (SiV) center in diamond to the telecom C-band. By using a two-stage difference-frequency mixing scheme SPDC noise is circumvented and Raman noise is minimized, resulting in a very low noise rate of $10.4\pm 0.7$ photons per second as well as an overall device efficiency of $35.6\%$. By converting single photons from SiV centers we demonstrate the preservation of photon statistics upon conversion.

12 pages, 3 figures

References in corpus (5)

• Indistinguishable photons from separated silicon-vacancy centers in diamond
• Silicon-Vacancy Spin Qubit in Diamond: A Quantum Memory Exceeding 10 ms with Single-Shot State Readout
• Telecom networking with a diamond quantum memory
• Coherence properties and quantum control of silicon vacancy color centers in diamond
• Efficient polarisation-preserving frequency conversion from a trapped-ion-compatible wavelength to the telecom C band

Cited by in corpus (6)

• Entanglement of Nanophotonic Quantum Memory Nodes in a Telecom Network
• Metropolitan-scale heralded entanglement of solid-state qubits
• Telecom networking with a diamond quantum memory
• Quantum Frequency Conversion of $\mu s$-long Photons from the Visible to the Telecom-C-Band
• Telecom-to-Visible Quantum Frequency Converter on a Silicon Nitride Chip
• Fiber-integrated Quantum Frequency Conversion for Long-distance Quantum Networking