Multiphonon relaxation in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">YVO</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>single crystals

Ermeneux, F. S.; Goutaudier, C.; Moncorgé, R.; Sun, Yazhou; Cone, R. L.; Zannoni, E.; Cavalli, E.; Bettinelli, Marco

doi:10.1103/physrevb.61.3915

Cited by 54 publications

(29 citation statements)

References 29 publications

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“…Radiative and nonradiative decay make a familiar contribution usually discussed in terms of a lifetime 1 [140], but metastable levels, can have T 1 values up to 1-10 ms, giving lifetime-limited values as small as h = 10-150 Hz. For excited levels within a manifold, on the other hand, non-radiative decay times can be in the nanosecond to picosecond range.…”

Section: Homogeneous Linewidthmentioning

confidence: 99%

Photon‐echo quantum memory in solid state systems

Tittel¹,

Afzelius

Chanelière

et al. 2010

Laser & Photonics Reviews

429

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: Homogeneous Linewidthmentioning

confidence: 99%

Photon‐echo quantum memory in solid state systems

Tittel¹,

Afzelius

Chanelière

et al. 2010

Laser & Photonics Reviews

429

418

View full text Add to dashboard Cite

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“…However, that real potential strongly depends on the relaxation dynamics of excited states to lower states and upconversion processes. For Er:YVO 4 the ESA and SE cross-section spectra for 4132-4I15/2 the transition do not overlap 2. Accordingly, losses of radiation by ESA at potential laser transition should be negligible but no laser emission of Er 3 +:YVO 4 has been observed yet.…”

Section: Introductionmentioning

confidence: 99%

“…For Er:YVO 4 the ESA and SE cross-section spectra for 4132-4I15/2 the transition do not overlap 2. Accordingly, losses of radiation by ESA at potential laser transition should be negligible but no laser emission of Er 3 +:YVO 4 has been observed yet. The absorption spectra, emission spectra and fluorescence dynamics of Er 3 +:YVO 4 have been reported .…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, losses of radiation by ESA at potential laser transition should be negligible but no laser emission of Er 3 +:YVO 4 has been observed yet. The absorption spectra, emission spectra and fluorescence dynamics of Er 3 +:YVO 4 have been reported . Upconverted green luminescence has been observed by excitation into 4 F 9 / 2 , 419/2, and 4111/2 1.…”

Section: Introductionmentioning

confidence: 99%

“…In the last few years Er 3 ' doped YVO 4 has been considered as a potential laser material in the IR spectral region i. However, that real potential strongly depends on the relaxation dynamics of excited states to lower states and upconversion processes.…”

Section: Introductionmentioning

confidence: 99%

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<title>Relaxation dynamics of excited states of Er<formula><sup><roman>3+ </roman></sup></formula>in YVO<formula><inf><roman>4</roman></inf></formula> single crystals</title>

et al. 2001

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Crystals of Er:YVO 4 were grown by Czochralski method. Uniformly doped and good quality crystals have been obtained. The lifetimes of the 4S3/2, and the luminescence dynamics were studied as a function of temperature in the region 5-500K. The green luminescence around 550 nm has been observed in excitation by the Ti:sapphire laser into 411l/2 level. The excitation spectrum recorded for 4S3/2 has been compared with absorption cross section spectrum and calculated ESA spectrum for 4 1• 1 / 2 -4 F 7 / 2 transition. The contribution of ESA process in upconversion phenomenon under excitation into 4 I11 has been assessed. The emission cross-section and the gain coefficient for 4113/2 211512 transition of Era 3 in YVO 4 have been calculated.

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A Theoretical Framework for Ratiometric Single Ion Luminescent Thermometers—Thermodynamic and Kinetic Guidelines for Optimized Performance

Suta

Meijerink

2020

Advcd Theory and Sims

198

191

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Luminescence (nano)thermometry is an increasingly important field for remote temperature sensing with high spatial resolution. Most typically, ratiometric sensing of the luminescence emission intensities of two thermally coupled emissive states based on a Boltzmann equilibrium is used to detect the local temperature. Dependent on the temperature range and preferred spectral window, various choices for potential candidates appear possible. Despite extensive experimental research in the field, a universal theory covering the basics of luminescence thermometry is virtually nonexistent. In this manuscript, a general theoretical framework of single ion luminescent thermometers is presented that offers simple, user-friendly guidelines for both the choice of an appropriate emitter and respective embedding host material for optimum temperature sensing. The results show that the optimum performance (thermal response and sensitivity) around T 0 is realized for an energy gap ∆E 21 between thermally coupled levels between 2k B T 0 and 3.41k B T 0. Analysis of the temperature-dependent excited state kinetics shows that host lattices in which ∆E 21 can be bridged by one or two phonons are preferred over hosts in which higher order phonon processes are required. Such a framework is relevant for both a fundamental understanding of luminescent thermometers but also the targeted design of novel and superior luminescent (nano)thermometers.

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Multiphonon relaxation inYVO4single crystals

Cited by 54 publications

References 29 publications

Photon‐echo quantum memory in solid state systems

Photon‐echo quantum memory in solid state systems

<title>Relaxation dynamics of excited states of Er<formula><sup><roman>3+ </roman></sup></formula>in YVO<formula><inf><roman>4</roman></inf></formula> single crystals</title>

A Theoretical Framework for Ratiometric Single Ion Luminescent Thermometers—Thermodynamic and Kinetic Guidelines for Optimized Performance

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