Spectroscopy and coherence lifetime extension of hyperfine transitions in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow /><mml:mn>151</mml:mn></mml:msup><mml:mi>Eu</mml:mi><mml:msup><mml:mrow /><mml:mrow><mml:mn>3</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msub><mml:mi>:Y</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>SiO</mml:mi><mml:mn>5</mml:mn></mml:msub></mml:math>

Arcangeli, A.; Lovrić, Marko; Tumino, B.; Ferrier, Alban; Goldner, Philippe

doi:10.1103/physrevb.89.184305

Cited by 44 publications

(47 citation statements)

References 44 publications

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“…Echo envelope modulation is clearly observed for the 5.99 MHz transition (±1/2 ↔ ±3/2). This effect has been previously reported in spin transitions of rare-earths as due to the removal of the ±M I degeneracy by residual magnetic fields [50]. Echo envelope modulation has also been attributed to superhyperfine coupling to surrounding nuclear spins [51,39].…”

Section: Spin Inhomogeneous and Homogeneous Linewidthssupporting

confidence: 58%

“…In nanoparticles, larger spin inhomogeneous linewidths of 42±9 and 48±6 kHz were measured for the ±1/2 ↔ ±3/2 and the ±3/2 ↔ ±5/2 transitions respectively. We believe that this can be also attributed to the O 2 plasma processing as non-processed Eu 3+ doped nanoparticles present spin inhomogeneous linewidths equivalent to ceramics [27] and bulk crystals [50].…”

Section: Spin Inhomogeneous and Homogeneous Linewidthsmentioning

confidence: 90%

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Coherent optical and spin spectroscopy of nanoscale Pr3+:Y2O3

et al. 2019

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We investigate the potential for optical quantum technologies of Pr 3+ :Y2O3 in the form of monodisperse spherical nanoparticles. We measured optical inhomogeneous lines of 27 GHz, and optical homogeneous linewidths of 108 kHz and 315 kHz in particles of 400 nm and 150 nm average diameters respectively for the 1 D2(0)↔ 3 H4(0) transition at 1.4 K. Furthermore, ground state and 1 D2 excited state hyperfine structures in Y2O3 are here for the first time determined by spectral hole burning and modeled by complete Hamiltonian calculations. Ground-state spin transitions have energies of 5.99 MHz and 10.42 MHz for which we demonstrate spin inhomogeneous linewidths of 42 and 45 kHz respectively. Spin T2 up to 880 µs was obtained for the ±3/2 ↔ ±5/2 transition at 10.42 MHz, a value which exceeds that of bulk Pr 3+ doped crystals so far reported. These promising results confirm nanoscale Pr 3+ :Y2O3 as a very appealing candidate to integrate quantum devices. In particular, we discuss here the possibility of using this material for realizing spin photon interfaces emitting indistinguishable single photons.

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Section: Spin Inhomogeneous and Homogeneous Linewidthssupporting

confidence: 58%

Section: Spin Inhomogeneous and Homogeneous Linewidthsmentioning

confidence: 90%

Coherent optical and spin spectroscopy of nanoscale Pr3+:Y2O3

et al. 2019

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“…We use the yellow 7 F 0 → 5 D 0 transition at 580.04 nm, which has an extremely narrow optical homogeneous broadening [40] at cryogenic temperatures. It also presents long spin coherence times [41][42][43]. The isotopically enriched 151 Eu 3+ doping results in a larger optical depth as compared to a natural abundance of Eu 3+ isotopes [44].…”

Section: A Experimental Setupmentioning

confidence: 99%

Towards highly multimode optical quantum memory for quantum repeaters

et al. 2016

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Long-distance quantum communication through optical fibers is currently limited to a few hundreds of kilometres due to fiber losses. Quantum repeaters could extend this limit to continental distances. Most approaches to quantum repeaters require highly multimode quantum memories in order to reach high communication rates. The atomic frequency comb memory scheme can in principle achieve high temporal multimode storage, without sacrificing memory efficiency. However, previous demonstrations have been hampered by the difficulty of creating high-resolution atomic combs, which reduces the efficiency for multimode storage. In this article we present a comb preparation method that allows one to increase the multimode capacity for a fixed memory bandwidth. We apply the method to a 151 Eu 3+ -doped Y 2 SiO 5 crystal, in which we demonstrate storage of 100 modes for 51 μs using the AFC echo scheme (a delay-line memory) and storage of 50 modes for 0.541 ms using the AFC spin-wave memory (an on-demand memory). We also briefly discuss the ultimate multimode limit imposed by the optical decoherence rate, for a fixed memory bandwidth.

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“…We use the yellow 7 F 0 → 5 D 0 transition at 580.04 nm, which has an extremely narrow homogeneous broadening [30] and long spin coherence [31] and population [30] lifetimes at cryogenic temperatures. The relevant energy levels and a schematic of the experimental setup are shown in Figs.…”

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confidence: 99%

Coherent Spin Control at the Quantum Level in an Ensemble-Based Optical Memory

et al. 2015

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Long-lived quantum memories are essential components of a long-standing goal of remote distribution of entanglement in quantum networks. These can be realized by storing the quantum states of light as single-spin excitations in atomic ensembles. However, spin states are often subjected to different dephasing processes that limit the storage time, which in principle could be overcome using spin-echo techniques. Theoretical studies suggest this to be challenging due to unavoidable spontaneous emission noise in ensemble-based quantum memories. Here, we demonstrate spin-echo manipulation of a mean spin excitation of 1 in a large solid-state ensemble, generated through storage of a weak optical pulse. After a storage time of about 1 ms we optically read-out the spin excitation with a high signal-to-noise ratio. Our results pave the way for long-duration optical quantum storage using spin-echo techniques for any ensemble-based memory.

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Spectroscopy and coherence lifetime extension of hyperfine transitions in151Eu3+:Y2SiO5

Cited by 44 publications

References 44 publications

Coherent optical and spin spectroscopy of nanoscale Pr3+:Y2O3

Coherent optical and spin spectroscopy of nanoscale Pr3+:Y2O3

Towards highly multimode optical quantum memory for quantum repeaters

Coherent Spin Control at the Quantum Level in an Ensemble-Based Optical Memory

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