Photon echo of an ultranarrow optical transition of 167Er3+ in 7LiYF4 crystals

Minnegaliev, M. M.; Baibekov, E. I.; Gerasimov, K. I.; Моисеев, С. А.; Smirnov, M. A.; Urmancheev, R. V.

doi:10.1070/qel16470

Cited by 13 publications

(7 citation statements)

References 5 publications

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“…Success for our scheme requires a highly coherent |4 ↔ |5 transition so δ/γ 45 1, and noise-power dependence on γ 45 is presented in the inset of Fig. 4.…”

Section: Discussionmentioning

confidence: 99%

“…Now that we have recommended an appropriate material, we proceed to explore possible cavity designs that could provide requisite impedance matching. The most straightforward solution would be to place a rare-earthdoped crystal into a Fabry-Perot resonator [44,45]. Although inherited large intra-cavity losses even for antireflective coated crystals, makes them unfavourable for our task.…”

Section: Discussionmentioning

confidence: 99%

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Broadband quantum memory in a cavity via zero spectral dispersion

Moiseev,

Tashchilina,

Moiseev

et al. 2021

Preprint

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We seek to design experimentally feasible broadband, temporally multiplexed optical quantum memory with near-term applications to telecom bands. Specifically, we devise dispersion compensation for an impedance-matched narrow-band quantum memory by exploiting Raman processes over two three-level atomic subensembles, one for memory and the other for dispersion compensation. Dispersion compensation provides impedance matching over more than a full cavity linewidth. Combined with one second spin-coherence lifetime the memory could be capable of power efficiency exceeding 90% leading to 10 6 modes for temporal multiplexing. Our design could lead to significant multiplexing enhancement for quantum repeaters to be used for telecom quantum networks.

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“…Success for our scheme requires a highly coherent |4 ↔ |5 transition so δ/γ 45 1, and noise-power dependence on γ 45 is presented in the inset of Fig. 4.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Broadband quantum memory in a cavity via zero spectral dispersion

Moiseev,

Tashchilina,

Moiseev

et al. 2021

Preprint

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“…For the second experiment we studied a two-pulse (primary) photon echo in the fabricated waveguides that we previously observed in bulk crystal [23] . This time AOM1 carved the pulses from the continuous laser emission and AOM2 was used for protection of the sensitive avalanche detector D1 (Thorlabs PDA120A/M) from intense input pulses and allowed light to pass only during the echo signal measurement.…”

Section: Optical Spectroscopy Of 167 Er 3+ In the Crystal Waveguidesmentioning

confidence: 99%

“…One of the main requirements for achieving high efficiency in this protocol is small inhomogeneous broadening on the optical transition. The REI in the 7 LiYF 4 crystal exhibits one of the smallest (for solid state systems) inhomogeneous broadenings of the absorption lines [19][20][21][22][23], which makes this crystal a good candidate for the off-resonant QM schemes.…”

Section: Introductionmentioning

confidence: 99%

Observation and investigation of narrow optical transitions of¹⁶⁷Er³⁺ions in femtosecond laser printed waveguides in⁷LiYF₄crystal

et al. 2018

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We produced optical waveguides in the 167 Er 3+ : 7 LiYF 4 crystal with diameters ranging from 30 to 100 μm by using the depressed-cladding approach with femtosecond laser. Stationary and coherent spectroscopy was performed on the 809 nm optical transitions between the hyperfine sublevels of 4 I 15/2 and 4 I 9/2 multiplets of 167 Er 3+ ions both inside and outside of waveguides. It was found that the spectra of 167 Er 3+ were slightly broadened and shifted inside the waveguides compared to the bulk crystal spectra. We managed to observe a two-pulse photon echo on this transition and determined phase relaxation times for each waveguide. The experimental results show that the created crystal waveguides doped by rare-earth ions can be used in optical quantum memory and integrated quantum schemes.

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“…In addition, the sample is maintained at 1.6 K inside a superfluid Helium cryostat, described in Ref. 25, to ensure a long coherence time [26,27]. Its three optical windows allow for laser pumping, investigating pulses emitted in the forward direction, along with monitoring the isotropic incoherent emission [17].…”

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confidence: 99%

Cascade Superfluorescence in Er:YLF

Chiossi,

Braggio,

Khanbekyan

et al. 2020

Preprint

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We report the analysis of paired photon pulses arising from two cascading transitions in continuously pumped Erbium-doped YLiF4 1% and 0.01% crystals at 1.6 K. The dependence of the pulse peak intensity on the squared number of involved Erbium ions, between 10 11 and 10 13 , definitely identifies the cooperative nature of the two pulsed emissions, that are generated by the subsequent, spontaneous formation of coherent states. The observed fluctuations of the time interval between the paired pulses and, most importantly, its correlation with the second pulse duration, demonstrate that the Erbium ions coherence is indeed seeded by vacuum fluctuations.

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Photon echo of an ultranarrow optical transition of ¹⁶⁷Er³⁺ in ⁷LiYF₄ crystals

Cited by 13 publications

References 5 publications

Broadband quantum memory in a cavity via zero spectral dispersion

Broadband quantum memory in a cavity via zero spectral dispersion

Observation and investigation of narrow optical transitions of¹⁶⁷Er³⁺ions in femtosecond laser printed waveguides in⁷LiYF₄crystal

Cascade Superfluorescence in Er:YLF

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Photon echo of an ultranarrow optical transition of 167Er3+ in 7LiYF4 crystals

Cited by 13 publications

References 5 publications

Broadband quantum memory in a cavity via zero spectral dispersion

Broadband quantum memory in a cavity via zero spectral dispersion

Observation and investigation of narrow optical transitions of167Er3+ions in femtosecond laser printed waveguides in7LiYF4crystal

Cascade Superfluorescence in Er:YLF

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Photon echo of an ultranarrow optical transition of ¹⁶⁷Er³⁺ in ⁷LiYF₄ crystals

Observation and investigation of narrow optical transitions of¹⁶⁷Er³⁺ions in femtosecond laser printed waveguides in⁷LiYF₄crystal