A multiplexed light-matter interface for fibre-based quantum networks

Erhan Saglamyurek, Marcelli Grimau Puigibert, Qiang Zhou, Lambert Giner, Francesco Marsili, Varun B. Verma, Sae Woo Nam, Lee Oesterling, David Nippa, Daniel Oblak and Wolfgang Tittel ()
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Erhan Saglamyurek: Institute for Quantum Science and Technology, University of Calgary
Marcelli Grimau Puigibert: Institute for Quantum Science and Technology, University of Calgary
Qiang Zhou: Institute for Quantum Science and Technology, University of Calgary
Lambert Giner: Institute for Quantum Science and Technology, University of Calgary
Francesco Marsili: Jet Propulsion Laboratory, California Institute of Technology
Varun B. Verma: National Institute of Standards and Technology
Sae Woo Nam: National Institute of Standards and Technology
Lee Oesterling: Battelle
David Nippa: Battelle
Daniel Oblak: Institute for Quantum Science and Technology, University of Calgary
Wolfgang Tittel: Institute for Quantum Science and Technology, University of Calgary

Nature Communications, 2016, vol. 7, issue 1, 1-7

Abstract: Abstract Processing and distributing quantum information using photons through fibre-optic or free-space links are essential for building future quantum networks. The scalability needed for such networks can be achieved by employing photonic quantum states that are multiplexed into time and/or frequency, and light-matter interfaces that are able to store and process such states with large time-bandwidth product and multimode capacities. Despite important progress in developing such devices, the demonstration of these capabilities using non-classical light remains challenging. Here, employing the atomic frequency comb quantum memory protocol in a cryogenically cooled erbium-doped optical fibre, we report the quantum storage of heralded single photons at a telecom-wavelength (1.53 μm) with a time-bandwidth product approaching 800. Furthermore, we demonstrate frequency-multimode storage and memory-based spectral-temporal photon manipulation. Notably, our demonstrations rely on fully integrated quantum technologies operating at telecommunication wavelengths. With improved storage efficiency, our light-matter interface may become a useful tool in future quantum networks.

Date: 2016
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DOI: 10.1038/ncomms11202

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