Multimode quantum memory based on atomic frequency combs
By M. Afzelius, C. Simon, Hugues de Riedmatten, Nicolas Gisin. 2008
446 citations recorded by the source corpus.
An efficient multimode quantum memory is a crucial resource for long-distance quantum communication based on quantum repeaters. We propose a quantum memory based on spectral shaping of an inhomogeneously broadened optical transition into an atomic frequency comb (AFC). The spectral width of the AFC allows efficient storage of multiple temporal modes without the need to increase the absorption depth of the storage material, in contrast to previously known quantum memories. Efficient readout is possible thanks to rephasing of the atomic dipoles due to the AFC structure. Long-time storage and on-demand readout is achieved by use of spin states in a lambda-type configuration. We show that an AFC quantum memory realized in solids doped with rare-earth-metal ions could store hundreds of modes or more with close to unit efficiency, for material parameters achievable today.
Subfields: Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/88d4472e1599760a238700cdfbaf091a2576aca9
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In Atomic and Molecular Physics, and Optics
- Nicolas Sangouard
- Wolfgang Tittel
- C. Simon
- Nicolas Gisin
- Hugues de Riedmatten
- Alexander I. Lvovsky
- Barry C. Sanders
- M. Afzelius
Citations in the corpus
- Quantum memories: emerging applications and recent advances (2015, background): “Quantum memory has been achieved in a range of physical systems which can be grouped into the following five platforms: rare-earth iondoped solids, diamond color centres, crystalline solids, alkali metal vapours and molecules.”
- Optical quantum memory (2009, background): “The quantum memory protocol, proposed in 2008 [14], is expected to enable time-variable storage of quantum states with unit efficiency and fidelity.”
- Quantum repeaters based on atomic ensembles and linear optics (2009, background): “32 The principle f the atomic frequency comb (AFC) quantum memory (Afzelius et al., 2009a).”
- Modes and states in quantum optics (2019, unknown): “We will not treat either the multimodal aspects of light matter interaction (Afzelius et al., 2009; Nunn et al., 2008).”
- NetSquid, a NETwork Simulator for QUantum Information using Discrete events (2020, background): “The crossover performance point is reached at ~50 km, beyond which AFC memories outperform EIT memories.”
- Quantum storage of photonic entanglement in a crystal (2010, methodology): “It is based on a photon echo type interaction using an atomic frequency comb (AFC) [26].”