Abstract
The realization of a future quantum Internet requires the processing and storage of quantum information at local nodes and interconnecting distant nodes using free-space and fibre-optic links1. Quantum memories for light2 are key elements of such quantum networks. However, to date, neither an atomic quantum memory for non-classical states of light operating at a wavelength compatible with standard telecom fibre infrastructure, nor a fibre-based implementation of a quantum memory, has been reported. Here, we demonstrate the storage and faithful recall of the state of a 1,532 nm wavelength photon entangled with a 795 nm photon, in an ensemble of cryogenically cooled erbium ions doped into a 20-m-long silica fibre, using a photon-echo quantum memory protocol. Despite its currently limited efficiency and storage time, our broadband light–matter interface brings fibre-based quantum networks one step closer to reality.
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References
Kimble, H. J. The quantum Internet. Nature 453, 1023–1030 (2008).
Lvovsky, A. I., Tittel, W. & Sanders, B. C. Optical quantum memory. Nature Photon. 3, 706–714 (2009).
Ladd, T. D. et al. Quantum computers. Nature 464, 45–53 (2010).
Gisin, N., Ribordy, G., Tittel, W. & Zbinden, H. Quantum cryptography. Rev. Mod. Phys. 74, 145–195 (2002).
Giovannetti, V., Lloyd, S. & Maccone, L. Advances in quantum metrology. Nature Photon. 5, 222–229 (2011).
Sangouard, N., Simon, C., de Riedmatten, H. & Gisin, N. Quantum repeaters based on atomic ensembles and linear optics. Rev. Mod. Phys. 83, 3380 (2011).
Bussières, F. et al. Prospective applications of optical quantum memories. J. Mod. Opt. 60, 1519–1537 (2013).
Lauritzen, B. et al. Telecom-wavelength solid-state memory at the single photon level. Phys. Rev. Lett. 104, 080502 (2010).
Dajczgewand, J., Le Gouët, J. L., Louchet-Chauvet, A. & Chanelière, T. Large efficiency at telecom wavelength for optical quantum memories. Opt. Lett. 39, 2711–2714 (2014).
Bussières, F. et al. Quantum teleportation from a telecom-wavelength photon to a solid-state quantum memory. Nature Photon. 8, 775–778 (2014).
Maring, N. et al. Storage of up-converted telecom photons in a doped crystal. New J. Phys. 16, 113021 (2014).
Sprague, M. R. et al. Broadband single-photon-level memory in a hollow-core photonic crystal fibre. Nature Photon. 8, 287–291 (2014).
De Riedmatten, H., Afzelius, M., Staudt, M. U., Simon, C. & Gisin, N. A solid-state light matter interface at the single-photon level. Nature 456, 773–777 (2008).
Afzelius, M., Simon, C., de Riedmatten, H. & Gisin, N. Multimode quantum memory based on atomic frequency combs. Phys. Rev. A 79, 052329 (2009).
Afzelius, M. & Simon, C. Impedance-matched cavity quantum memory. Phys. Rev. A 82, 022310 (2010).
Moiseev, S. A., Andrianov, S. N. & Gubaidullin, F. F. Efficient multimode quantum memory based on photon echo in an optimal QED cavity. Phys. Rev. A 82, 022311 (2010).
Afzelius, M. et al. Demonstration of atomic frequency comb memory for light with spin–wave storage. Phys. Rev. Lett. 104, 040503 (2010).
Saglamyurek, E. et al. Broadband waveguide quantum memory for entangled photons. Nature 469, 513–518 (2011).
Clausen, C. et al. Quantum storage of photonic entanglement in a crystal. Nature 469, 508–512 (2011).
Lauritzen, B. et al. Approaches for a quantum memory at telecommunication wavelengths. Phys. Rev. A 83, 12318 (2011).
Hastings-Simon, S. R. et al. Zeeman-level lifetimes in Er3+:Y2SiO5 . Phys. Rev. B 78, 085410 (2008).
Altepeter, J. B., Jeffrey, E. R. & Kwiat, P. G. Photonic state tomography. Adv. At. Mol. Opt. Phys. 52, 105–159 (2005).
Clauser, J. F., Horne, M. A., Shimony, A. & Holt, R. A. Proposed experiment to test local hidden-variable theories. Phys. Rev. Lett. 23, 880–884 (1969).
Hastings-Simon, S. R. et al. Controlled Stark shifts in Er3+-doped crystalline and amorphous waveguides for quantum state storage. Opt. Commun. 266, 716–719 (2006).
Sinclair, N. et al. Spectral multiplexing for scalable quantum photonics using an atomic frequency comb quantum memory and feed-forward control. Phys. Rev. Lett. 113, 053603 (2014).
Guha, S. et al. Exact analysis of a practical quantum repeater architecture with noisy elements. Preprint at http://lanl.arXiv.org/abs/arXiv:1404.7183 (2014).
Nunn, J. et al. Enhancing multiphoton rates with quantum memories. Phys. Rev. Lett. 110, 133601 (2013).
Saglamyurek, E. et al. An integrated processor for photonic quantum states using a broadband light–matter interface. New J. Phys. 16, 065019 (2014).
O'Brien, C., Lauk, N., Blum, S., Morigi, G. & Fleischhauer, M. Interfacing superconducting qubits and telecom photons via a rare-earth doped crystal. Phys. Rev. Lett. 113, 063603 (2014).
Marsili, F. et al. Detecting single infrared photons with 93% system efficiency. Nature Photon. 7, 210–214 (2013).
Acknowledgements
E.S., J.J., D.O. and W.T. thank C. Thiel, N. Sinclair, M. Hedges, T. Lutz, K. Heshami, M. Grimau Puigiber, L. Giner, A. Croteau, C. La Mela and V. Kiselyov for technical help and/or discussions, and acknowledge funding through Alberta Innovates Technology Futures (AITF) and the National Science and Engineering Research Council of Canada (NSERC). W.T. is a senior fellow of the Canadian Institute for Advanced Research (CIFAR). V.B.V. and S.W.N. acknowledge partial funding for detector development from the Defense Advanced Research Projects Agency (DARPA) Information in a Photon (InPho) programme. Part of the research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.
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The SNSPDs were fabricated and tested by V.B.V., M.D.S., F.M. and S.W.N. at the National Institute of Standards and Technology and Jet Propulsion Laboratory. All measurements were performed by E.S. and J.J., with help from D.O. The manuscript was written by W.T., E.S. and D.O.
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Saglamyurek, E., Jin, J., Verma, V. et al. Quantum storage of entangled telecom-wavelength photons in an erbium-doped optical fibre. Nature Photon 9, 83–87 (2015). https://doi.org/10.1038/nphoton.2014.311
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DOI: https://doi.org/10.1038/nphoton.2014.311
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