Atomic-frequency-comb quantum memory via piecewise adiabatic passage

Rubio, J. L.; Viscor, Daniel; Mompart, J.; Ahufinger, V.

doi:10.1103/physreva.98.043834

Cited by 7 publications

(6 citation statements)

References 46 publications

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“…7, where the sequential application of five sets of rSTIRAP pulses with different target frequencies ω (n) target yield five welldefined qubits inside the hole. While here we have assumed the serial application of the different rSTIRAP pulses, it should also be possible to create an atomic frequency comb [31,32], i.e., a number of equidistant isolated qubits, by simultaneously applying the rSTIRAP pulses with an optical frequency comb, see also Ref [33] for a related proposal in a Doppler-broadened system.…”

Section: B Isolation Profilesmentioning

confidence: 99%

Coherent spectral hole burning and qubit isolation by stimulated Raman adiabatic passage

et al. 2019

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We describe how stimulated Raman adiabatic passage (STIRAP) can be applied to create spectral holes in an inhomogeneously broadened system. Due to the robustness of STIRAP, our proposal guarantees high flexibility and accuracy and, at variance with traditional spectral hole burning techniques, it may require substantially less time resources since it does not rely upon the spontaneous decay of an intermediate excited state. We investigate the effects on the scheme of dephasing and dissipation as well as of unintentional driving of undesired transitions due to a finite splitting of the initial and target state. Finally, we show that the pulses can be reversed to create narrow absorption structures inside a broad spectral hole, which can be used as qubits for precise quantum operations on inhomogeneously broadened few-level systems. *

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Section: B Isolation Profilesmentioning

confidence: 99%

Coherent spectral hole burning and qubit isolation by stimulated Raman adiabatic passage

et al. 2019

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“…The approach of velocity selective pumping in warm vapour has been previously used to generate steep atomic dispersion features for slow light demonstrations [17,18], narrowband atomic-line frequency filters [19], and in high-resolution spectroscopy [20][21][22][23]. Rubio et al [24] propose creating a velocity selected atomic frequency comb via piece-wise adiabatic passage to transfer velocity classes between states in Barium vapour.…”

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confidence: 99%

Preparing narrow velocity distributions for quantum memories in room-temperature alkali-metal vapors

et al. 2021

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Quantum memories are a crucial technology for enabling large-scale quantum networks through synchronisation of probabilistic operations. Such networks impose strict requirements on quantum memory, such as storage time, retrieval efficiency, bandwidth, and scalability. On-and offresonant ladder protocols on warm atomic vapour platforms are promising candidates, combining efficient high-bandwidth operation with low-noise on-demand retrieval. However, their storage time is severely limited by motion-induced dephasing caused by the broad velocity distribution of atoms comprising the vapour. In this paper, we demonstrate velocity selective optical pumping to overcome this decoherence mechanism. This will increase the achievable memory storage time of vapour memories. This technique can also be used for preparing arbitrarily shaped absorption profiles, for instance, preparing an atomic frequency comb absorption feature.

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“…In fact, the coherence can now be read out at any time multiple of the rephasing time thereby transforming the AFC protocol to an on-demand quantum memory protocol modulo 𝜏 [34]. A further advantage with this approach is that the 3 𝐻 4 → 3 𝐹 3 transition is around 1550 nm which would enable Pr 3+ :Y 2 SiO 5 to directly interface to telecommunication C-band quantum networks.…”

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confidence: 99%

Gigahertz-Bandwidth Optical Memory in Pr$^{3+}$:Y$_2$SiO$_5$

Nicolle,

Becker,

Weinzetl

et al. 2021

Preprint

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We experimentally study a broadband implementation of the atomic frequency comb (AFC) rephasing protocol with a cryogenically cooled Pr 3+ :Y 2 SiO 5 crystal. To allow for storage of broadband pulses, we explore a novel regime where the input photonic bandwidth closely matches the inhomogeneous broadening of the material (∼ 5 GHz), thereby significantly exceeding the hyperfine ground and excited state splitting (∼ 10 MHz). Through an investigation of different AFC preparation parameters, we measure a maximum efficiency of 10% after a rephasing time of 12.5 ns. With a suboptimal AFC, we witness up to 12 rephased temporal modes.

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Atomic-frequency-comb quantum memory via piecewise adiabatic passage

Cited by 7 publications

References 46 publications

Coherent spectral hole burning and qubit isolation by stimulated Raman adiabatic passage

Coherent spectral hole burning and qubit isolation by stimulated Raman adiabatic passage

Preparing narrow velocity distributions for quantum memories in room-temperature alkali-metal vapors

Gigahertz-Bandwidth Optical Memory in Pr$^{3+}$:Y$_2$SiO$_5$

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