Efficient light storage in a crystal using an atomic frequency comb

Chanelière, Thierry; Ruggiero, J.; Bonarota, M.; Afzelius, Mikael; Gouët, J.-L. Le

doi:10.1088/1367-2630/12/2/023025

Cited by 72 publications

(137 citation statements)

References 32 publications

(46 reference statements)

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“…2 where a comb of Gaussian peaks was assumed. Both the transmission and echo efficiency are strongly dependent on the actual peak shape [18,20]. For instance, the same comparison with a Lorentzian model [20] yields very different best-fit values for the finesse.…”

Section: Resultsmentioning

confidence: 99%

“…Both the transmission and echo efficiency are strongly dependent on the actual peak shape [18,20]. For instance, the same comparison with a Lorentzian model [20] yields very different best-fit values for the finesse. Although much effort was devoted to the precise measurement of the comb structure, it is still conceivable that the actual peak shape deviate from pure a Gaussian shape.…”

Section: Resultsmentioning

confidence: 99%

“…The combined storage and retrieval efficiency, however, was only 0.5% in that experiment. A more recent experiment in Tm 3+ :YAG [20] showed improved efficiency of 9%, also with weak coherent states. Finally, storage of 64 weak coherent states encoded in different temporal modes has been achieved in Nd 3+ :Y 2 SiO 5 [21], underlying the high multimode capacity of the AFC scheme.…”

Section: Introductionmentioning

confidence: 87%

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Towards an efficient atomic frequency comb quantum memory

Amari

Walther

Sabooni

et al. 2010

Journal of Luminescence

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We present an efficient photon-echo experiment based on atomic frequency combs [Phys. Rev. A 79, 052329 (2009)]. Echoes containing an energy of up to 35% of that of the input pulse are observed in a Pr 3+ -doped Y 2 SiO 5 crystal. This material allows for the precise spectral holeburning needed to make a sharp and highly absorbing comb structure. We compare our results with a simple theoretical model with satisfactory agreement. Our results show that atomic frequency combs has the potential for high-efficiency storage of single photons as required in future long-distance communication based on quantum repeaters.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 87%

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Towards an efficient atomic frequency comb quantum memory

Amari

Walther

Sabooni

et al. 2010

Journal of Luminescence

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“…Furthermore, their inhomogeneously broadened absorption lines can be tailored in appropriate structures, like atomic frequency combs (AFCs), to enable storage protocols with remarkable properties (e.g. temporal or frequency multiplexing) [18][19][20][21][22][23][24].Single photon level weak coherent pulses [25,26] and qubits [18,27,28] have been stored in the excited state of rare-earth doped crystals using the AFC scheme. This has recently been extended to the ground state, in the regime of a few photons per pulse [29].…”

mentioning

confidence: 99%

“…Single photon level weak coherent pulses [25,26] and qubits [18,27,28] have been stored in the excited state of rare-earth doped crystals using the AFC scheme. This has recently been extended to the ground state, in the regime of a few photons per pulse [29].…”

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confidence: 99%

Quantum Storage of Heralded Single Photons in a Praseodymium-Doped Crystal

et al. 2014

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We report on experiments demonstrating the reversible mapping of heralded single photons to long lived collective optical atomic excitations stored in a Pr 3+ :Y2SiO5 crystal. A cavity-enhanced spontaneous down-conversion source is employed to produce widely non-degenerate narrow-band (≈ 2 MHz) photon-pairs. The idler photons, whose frequency is compatible with telecommunication optical fibers, are used to herald the creation of the signal photons, compatible with the Pr 3+ transition. The signal photons are stored and retrieved using the atomic frequency comb protocol. We demonstrate storage times up to 4.5 µs while preserving non-classical correlations between the heralding and the retrieved photon. This is more than 20 times longer than in previous realizations in solid state devices, and implemented in a system ideally suited for the extension to spin-wave storage.PACS numbers: 03.67. Hk,42.50.Gy,42.50.Md Many protocols in quantum information science rely on the efficient and reversible interaction between photons and matter [1]. The interaction lays the basis for the realization of quantum memories for light and of their application, e.g. in quantum repeaters [2,3]. Possible choices for the system used to store light are single atoms in cavities [4], cold or hot atomic gases [5-13], or rare earth (RE) doped solid state systems [14]. Thanks to the weak interaction between the optical active ions and the environment, RE doped crystals offer, when cryogenically cooled, the long optical and spin coherence times typical of atomic systems, free of the drawbacks deriving from atomic motion [15]. Moreover they possess the benefits of the solid state systems, such as strong interaction with light, allowing for efficient storage of photons [16,17] and prospect for integrated devices. Furthermore, their inhomogeneously broadened absorption lines can be tailored in appropriate structures, like atomic frequency combs (AFCs), to enable storage protocols with remarkable properties (e.g. temporal or frequency multiplexing) [18][19][20][21][22][23][24].Single photon level weak coherent pulses [25,26] and qubits [18,27,28] have been stored in the excited state of rare-earth doped crystals using the AFC scheme. This has recently been extended to the ground state, in the regime of a few photons per pulse [29]. The storage of non-classical light generated by spontaneous parametric down-conversion (SPDC) has also been demonstrated and enabled entanglement between one photon and one collective optical atomic excitation in a crystal [30,31], entanglement between two crystals [32], and single photon qubit storage [33,34]. However, the mapping of nonclassical light using AFC in rare earth doped crystals was obtained so far only in systems with two ground state levels, thus inherently limited to the optical coherence and not directly extendable to spin-wave storage.On the contrary, Pr 3+ or Eu 3+ doped crystals have the required level structure for spin-wave storage [22,23,29].In particular, Pr 3+ :Y 2 SiO 5 is one of the optical ...

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Quantum Light Storage in Solid State Atomic Ensembles

Riedmatten

Afzelius

2015

Engineering the Atom-Photon Interaction

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In this chapter, we will describe the storage and retrieval of quantum light (heralded single photons and entangled photons) in atomic ensembles in a solid state environment. We will consider ensembles of rare-earth ions embedded in dielectric crystals. We will describe the methods used to create quantum light spectrally compatible with the narrow atomic transitions, as well as possible protocols based on dipole rephasing that can be used to reversibly map the quantum light onto collective atomic excitations. We will review the experimental state of the art and describe in more detail quantum light storage experiments in neodymium and praseodymium doped crystals.

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Efficient light storage in a crystal using an atomic frequency comb

Cited by 72 publications

References 32 publications

Towards an efficient atomic frequency comb quantum memory

Towards an efficient atomic frequency comb quantum memory

Quantum Storage of Heralded Single Photons in a Praseodymium-Doped Crystal

Quantum Light Storage in Solid State Atomic Ensembles

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