Telecom-Band Quantum Interference of Frequency-Converted Photons from Remote Detuned NV Centers

Title

Telecom-Band Quantum Interference of Frequency-Converted Photons from Remote Detuned NV Centers

 Author

Stolk, A.J. (TU Delft QuTech Advanced Research Centre; TU Delft QID/Hanson Lab; Kavli institute of nanoscience Delft)
van der Enden, K.L. (TU Delft QID/Hanson Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft)
Röhsner, M. (TU Delft QID/Hanson Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft)
Teepe, A. (TU Delft QN/vanderSarlab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft)
Faes, S. O.F. (Kavli institute of nanoscience Delft)
Bradley, C.E. (TU Delft QID/Taminiau Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft)
Cadot, S.P.A. (TU Delft QID/Hanson Lab; TU Delft QuTech Advanced Research Centre)
van Rantwijk, J.F. (TU Delft QID/Software Group; TU Delft QuTech Advanced Research Centre)
te Raa, I. (TU Delft QID/Software Group; TU Delft QuTech Advanced Research Centre)
Hagen, R.A.J. (TU Delft BUS/TNO STAFF; TU Delft QuTech Advanced Research Centre; TNO)
Verlaan, A. L. (TNO; External organisation)
Biemond, J.J.B. (TU Delft BUS/TNO STAFF; TU Delft QuTech Advanced Research Centre; TNO) ORCID 0000-0001-5300-8274
Khorev, A. (TU Delft BUS/TNO STAFF; TU Delft QuTech Advanced Research Centre; TNO)
Vollmer, R. (TU Delft BUS/TNO STAFF; TU Delft QuTech Advanced Research Centre; TNO)
Morits, J.P.J. (TU Delft BUS/TNO STAFF; TU Delft QuTech Advanced Research Centre; TNO)
Taminiau, T.H. (TU Delft QID/Taminiau Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) ORCID 0000-0002-2355-727X
van Zwet, E.J. (TU Delft BUS/TNO STAFF; TU Delft QuTech Advanced Research Centre; TNO)
Hanson, R. (TU Delft QID/Hanson Lab; TU Delft QN/Hanson Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) ORCID 0000-0001-8938-2137

 Date

2022

 Abstract

Entanglement distribution over quantum networks has the promise of realizing fundamentally new technologies. Entanglement between separated quantum processing nodes has been achieved on several experimental platforms in the past decade. To move toward metropolitan-scale quantum network test beds, the creation and transmission of indistinguishable single photons over existing telecom infrastructure is key. Here, we report the interference of photons emitted by remote spectrally detuned NV-center-based network nodes, using quantum frequency conversion to the telecom L band. We find a visibility of 0.79±0.03 and an indistinguishability between converted NV photons around 0.9 over the full range of the emission duration, confirming the removal of the spectral information present. Our approach implements fully separated and independent control over the nodes, time multiplexing of control and quantum signals, and active feedback to stabilize the output frequency. Our results demonstrate a working principle that can be readily employed on other platforms and shows a clear path toward generating metropolitan-scale solid-state entanglement over deployed telecom fibers.


 To reference this document use:

http://resolver.tudelft.nl/uuid:327a3616-f34d-481e-8c39-d316c8ecff87

 DOI

https://doi.org/10.1103/PRXQuantum.3.020359

 Source

PRX Quantum, 3 (2)

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2022 A.J. Stolk, K.L. van der Enden, M. Röhsner, A. Teepe, S. O.F. Faes, C.E. Bradley, S.P.A. Cadot, J.F. van Rantwijk, I. te Raa, R.A.J. Hagen, A. L. Verlaan, J.J.B. Biemond, A. Khorev, R. Vollmer, J.P.J. Morits, T.H. Taminiau, E.J. van Zwet, R. Hanson
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