Atomic frequency comb storage as a slow-light effect

Bonarota, M.; Gouët, J.-L. Le; Моисеев, С. А.; Chanelière, Thierry

doi:10.1088/0953-4075/45/12/124002

Cited by 18 publications

(42 citation statements)

References 44 publications

(75 reference statements)

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“…Currently, AFC storage has been successfully implemented in several RE doped solids, including Nd 3+ :YVO 4 [13,22], Nd 3+ :Y 2 SiO 5 [16,23,24], Tm 3+ :YAG [17,[25][26][27][28], Pr 3+ :Y 2 SiO 5 [18,[29][30][31][32], Eu 3+ :Y 2 SiO 5 [19,21], Er 3+ :Y 2 SiO 5 [33] and Tm 3+ :LiNbO 3 [14,34]. Nd 3+ ions are of particular interests because they can provide large memory bandwidth and their working wavelengths are around 870 nm, a wavelength region where diode lasers and efficient single photon detectors are available.…”

mentioning

confidence: 99%

Efficient spectral hole-burning and atomic frequency comb storage in Nd3+:YLiF4

Zhou

Wang

et al. 2013

Sci Rep

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We present spectral hole-burning measurements of the 4I9/2 → 4F3/2 transition in Nd3+:YLiF4. The isotope shifts of Nd3+ can be directly resolved in the optical absorption spectrum. We report atomic frequency comb storage with an echo efficiency of up to 35% and a memory bandwidth of 60 MHz in this material. The interesting properties show the potential of this material for use in both quantum and classical information processing.

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confidence: 99%

Efficient spectral hole-burning and atomic frequency comb storage in Nd3+:YLiF4

Zhou

Wang

et al. 2013

Sci Rep

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“…It is worth pointing out that the common features between different delay mechanisms (for example, the ATS delay due to the polarization-mediated coherence exchange between spin and photonic modes, or the AFC delay due to periodic dephasing and rephasing of polarization) are a consequence of the fact that signal delay through a linear system (in these cases, the quantum memory medium) depends only on the shape of absorption (and associated dispersion) profile of that system regardless of the physical origin (i.e.. light-induced absorption peaks of ATS or stationary absorption combs of the AFC). This principle is the essence of linear spectral- filtering theory for classical signal processing and can also be used to describe the presented features of the different delay mechanisms [31][32][33] as an alternative to the Maxwell-Bloch treatment in this work.…”

Section: Dispersion-vs-absorption Based Signal Delaymentioning

confidence: 99%

Discerning quantum memories based on electromagnetically-induced-transparency and Autler-Townes-splitting protocols

et al. 2019

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Electromagnetically induced transparency (EIT) and Autler-Townes splitting (ATS) are similar, but different quantum optical phenomena: EIT results from a Fano interference, whereas ATS is described by the AC-Stark effect. Likewise, despite their close resemblance, light-storage techniques based on the EIT memory protocol and the recently-proposed ATS memory protocol (E. Saglamyurek et al. Nature Photonics 12, 2018) are distinct: the EIT protocol relies on adiabatic elimination of absorption, whereas the ATS protocol is based on absorption. In this article, we elaborate on the distinction between EIT and ATS memory protocols through numerical analysis and experimental demonstrations in a cold rubidium ensemble. We find that their storage characteristics manifest opposite limits of the light-matter interaction due to their inherent adiabatic vs. non-adiabatic nature. Furthermore, we determine optimal memory conditions for each protocol and analyze ambiguous regimes in the case of broadband storage, where non-optimal memory implementations can possess characteristics of both EIT and ATS protocols. We anticipate that this investigation will lead to deeper understanding and improved technical development of quantum memories, while clarifying distinctions between the EIT and ATS protocols.

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“…Passive schemes as, for example, atomic frequency comb (AFC) protocol [11][12][13][14][15], are preferable since passive protocols are capable to store quantum information in collective atomic excitations for a pre-determined time without using additional excitations complicating the storage schemes. Meanwhile, quantum efficiency of the AFC protocol, which is the first example of the passive scheme, is limited to 54%.…”

Section: Introductionmentioning

confidence: 99%

Increasing efficiency of quantum memory based on atomic frequency combs

Shakhmuratov

2019

Preprint

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A protocol, which essentially increases the efficiency of the quantum memory based on the atomic frequency comb (AFC), is proposed. It is well known that a weak short pulse, transmitted trough a medium with a periodic structure of absorption peaks separated by transparency windows (AFC), is transformed into prompt and delayed pulses. Time delay is equal to the inverse value of the frequency period of the peaks. It is proposed to send the prompt pulse again through the medium and to make both delayed pulses to interfere. This leads to the essential increase of the efficiency of the AFC storage protocol.

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Atomic frequency comb storage as a slow-light effect

Cited by 18 publications

References 44 publications

Efficient spectral hole-burning and atomic frequency comb storage in Nd3+:YLiF4

Efficient spectral hole-burning and atomic frequency comb storage in Nd3+:YLiF4

Discerning quantum memories based on electromagnetically-induced-transparency and Autler-Townes-splitting protocols

Increasing efficiency of quantum memory based on atomic frequency combs

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