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Hastings‐Simon, Sara; Afzelius, Mikael; Minář, Jiří; Staudt, M. U.; Lauritzen, Björn; Riedmatten, Hugues de; Gisin, Nicolas; Amari, Atia; Walther, Andreas; Kröll, Stefan; Cavalli, Enrico; Bettinelli, Marco

doi:10.1103/physrevb.77.125111

Cited by 44 publications

(71 citation statements)

References 35 publications

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“…The use of Tm 3+ :Y 2 O 3 , where the holeburning involves a metastable electronic state, has been proposed to avoid this problem [172]. Another alternative would be to use the Zeeman level structure of odd-electron RE ions such as Neodymium [143,169] and Erbium [195], where level spacings larger than 1 GHz can be obtained by applying moderate magnetic fields. Some early proposals for CRIB based memories have the required controlled inhomogeneous broadening induced on a material level, i.e.…”

Section: Experimental Realizations Of Cribmentioning

confidence: 99%

“…ions, large applied magnetic fields can be used to freeze out electronic spin fluctuations [84,121,[141][142][143]. Furthermore, when RE ions are optically excited their interactions with neighbors change, introducing frequency shifts resulting in instantaneous spectral diffusion; the term excitationinduced frequency shifts is also applied [136,[144][145][146][147][148][149][150][151][152][153].…”

Section: +mentioning

confidence: 99%

“…While these numbers are still small, the ultra-narrow linewidths and high number densities readily allow optical depths of 1-10 in mm scale samples [143,187]. Note that the optical depth before controlled broadening has to be very large to ensure sufficient absorption after broadening.…”

Section: Absorptionmentioning

confidence: 99%

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Photon‐echo quantum memory in solid state systems

Tittel¹,

Afzelius

Chanelière

et al. 2010

Laser & Photonics Reviews

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432

418

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Many applications of quantum communication crucially depend on reversible transfer of quantum states between light and matter. Motivated by rapid recent developments in theory and experiment, we review research related to quantum memory based on a photon-echo approach in solid state material with emphasis on use in a quantum repeater. After introducing quantum communication, the quantum repeater concept, and properties of a quantum memory required to be useful in a quantum repeater, we describe the historical development from spin echoes, discovered in 1950, to photon-echo quantum memory. We present a simple theoretical description of the ideal protocol, and comment on the impact of a non-ideal realization on its quantum nature. We extensively discuss rare-earth-ion doped crystals and glasses as material candidates, elaborate on traditional photon-echo experiments as a test-bed for quantum state storage, and describe the current state-of-the-art of photon-echo quantum memory. Finally, we give a brief outlook on current research.The picture shows a Europium doped Y2SiO5 crystal surrounded by electrodes in the setup used for the first proof-of-principle demonstration of the novel, photon-echo based quantum memory protocol.

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Section: Experimental Realizations Of Cribmentioning

confidence: 99%

Section: +mentioning

confidence: 99%

See 1 more Smart Citation

Photon‐echo quantum memory in solid state systems

Tittel¹,

Afzelius

Chanelière

et al. 2010

Laser & Photonics Reviews

Self Cite

432

418

View full text Add to dashboard Cite

show abstract

“…Odd-isotope ions will in general hole burn very well because the hyperfine ground states are mixed and they have long nuclear spin lifetimes (>100 ms) for trapping the population (33). The expression to include these physical situations is…”

Section: Modelling Optical Pumping Dynamics In Nd:yvomentioning

confidence: 99%

Nanophotonic rare-earth quantum memory with optically controlled retrieval

Zhong

Kindem

Bartholomew

et al. 2017

Science

297

208

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Optical quantum memories are essential elements in quantum networks for long-distance distribution of quantum entanglement. Scalable development of quantum network nodes requires on-chip qubit storage functionality with control of the readout time. We demonstrate a high-fidelity nanophotonic quantum memory based on a mesoscopic neodymium ensemble coupled to a photonic crystal cavity. The nanocavity enables >95% spin polarization for efficient initialization of the atomic frequency comb memory and time bin–selective readout through an enhanced optical Stark shift of the comb frequencies. Our solid-state memory is integrable with other chip-scale photon source and detector devices for multiplexed quantum and classical information processing at the network nodes.

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“…The observation of persistent holes is of fundamental interest as they allow characterizing the interaction between REIs and their environment, and they find applications in both classical and quantum information processing [3]. Deep, narrow, and long-lived holes have been observed for various REIs doped into crystalline hosts [4][5][6]. These holes generally result from population storage in nuclear spin hyperfine levels, or, for REIs having an unpaired electron spin (so-called Kramers ions), in electronic Zeeman sublevels.…”

mentioning

confidence: 99%

Efficient and long-lived Zeeman-sublevel atomic population storage in an erbium-doped glass fiber

et al. 2015

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Long-lived population storage in optically pumped levels of rare-earth ions doped into solids, referred to as persistent spectral hole burning, is of significant fundamental and technological interest. However, the demonstration of deep and persistent holes in rare-earth ion doped amorphous hosts, e.g. glasses, has remained an open challenge since many decades -a fact that motivates our work towards a better understanding of the interaction between impurities and vibrational modes in glasses.Here we report the first observation and detailed characterization of such holes in an erbium-doped silica glass fiber cooled to below 1 K. We demonstrate population storage in electronic Zeemansublevels of the erbium ground state with lifetimes up to 30 seconds and 80% spin polarization. In addition to its fundamental aspect, our investigation reveals a potential technological application of rare-earth ion doped amorphous materials, including at telecommunication wavelength.

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Spectral hole-burning spectroscopy inNd3+:YVO4

Cited by 44 publications

References 35 publications

Photon‐echo quantum memory in solid state systems

Photon‐echo quantum memory in solid state systems

Nanophotonic rare-earth quantum memory with optically controlled retrieval

Efficient and long-lived Zeeman-sublevel atomic population storage in an erbium-doped glass fiber

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