Quantum Computing: A Solid-State Light-Matter Interface at the Single Photon Level

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Quantum interface between light and atomic ensembles (2008, methodology): “…echo approach based on Controlled Reversible Inhomogeneous Broadening (CRIB) (Hétet et al., 2008a; Kraus et al., 2006; Moiseev and Kröll, 2001; de Riedmatten et al., 2008; Staudt et al., 2007) The optical Raman coupling to the nuclear spin coherence has been investigated for the past decades…”
Quantum repeaters based on atomic ensembles and linear optics (2009, methodology): “The multimode capacity has also been recently increased by almost one order of magnitude compared to (de Riedmatten et al., 2008) in a Nd doped Y2SiO5 crystal.”
Coherence time of over a second in a telecom-compatible quantum memory storage material (2016, background): “Alternatively, spin-pumping allows for potentially GHz-bandwidth spin-wave storage using techniques already demonstrated in rare earth systems, such as GEM [19] and drastically improves the efficiency of AFC protocols [41].”
Optical quantum memory (2009, background): “and photon-echo quantum memory based on atomic frequency combs (AFCs”
Quantum storage of entangled telecom-wavelength photons in an erbium-doped optical fibre (2014, methodology): “Second, to store the 1532 nm photons, we use a cryogenically-cooled, commercially available erbium-doped fibre (see the Supplementary Information) in conjunction with the atomic frequency comb (AFC) quantum memory protocol[4, 11].”