Preparation and characterization of activated carbon from a low rank coal

Usmani, Tanzil Haider; Ahmed, Tamoor Wahab; Ahmed, S.; Yousufzai, A. H. K.

doi:10.1016/0008-6223(95)00137-9

Cited by 26 publications

(8 citation statements)

References 11 publications

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“…Rare-earth-ion doped crystals (RE crystals) are promising material candidates for photon-echo quantum memory [5]. Key findings include the storage of qubit states encoded into attenuated laser pulses [19], light storage with up to 66% efficiency [20,26,27,28], mapping of photonic quantum states onto collective atomic spin states [21], and simultaneous storage of 64 photon modes [29]. Furthermore, observation of more than 30 s coherence time of a ground state hyperfine transition in Pr:Y 2 SiO 5 [30] is highly promising for long-term storage in this crystal, as well as other RE crystals.…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic investigations of a waveguide for photon-echo quantum memory

Sinclair

Sağlamyürek

George

et al. 2010

Journal of Luminescence

108

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a b s t r a c tWe report the fabrication and characterization of a Ti 4 þ : Tm 3 þ : LiNbO 3 optical waveguide in view of photon-echo quantum memory applications. Specifically, we investigated room-and cryogenictemperature properties of the waveguide, and the Tm 3 þ ions, via absorption, spectral hole burning, photon echo, and Stark spectroscopy. For the Tm 3 þ ions, we found radiative lifetimes of 82 ms and 2.4 ms for the 3 H 4 and 3 F 4 levels, respectively, and a 44% branching ratio from the 3 H 4 to the 3 F 4 level.We also measured an optical coherence time of 1:6 ms for the 3 H 6 2 3 H 4 , 795 nm wavelength transition, and investigated the limitation of spectral diffusion to spectral hole burning. Upon application of magnetic fields of a few hundred Gauss, we observed persistent spectral holes with lifetimes up to seconds. Furthermore, we measured a linear Stark shift of 25 kHz cm=V. Our results are promising for integrated, electro-optical, waveguide quantum memory for photons.

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Section: Introductionmentioning

confidence: 99%

Spectroscopic investigations of a waveguide for photon-echo quantum memory

Sinclair

Sağlamyürek

George

et al. 2010

Journal of Luminescence

108

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“…[4][5][6][7][8][9][10][11][12]. Impregnated material is heated in an inert atmosphere (N 2 , Ar and CO 2 atmosphere).…”

Section: Introductionmentioning

confidence: 99%

Textural development of sugar beet bagasse activated with ZnCl2

Önal

Başar

Sarıcı-Özdemir

et al. 2007

Journal of Hazardous Materials

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“…3. Both of two samples exhibit two distinctive absorption bands at 1050 and 1665 cm À1 , which is associated with COOH absorption peaks [18]. Comparing both bands at 1190 cm À1 , the intensity of absorption peaks was easily ignored because of the existence of COOH absorption peaks and increased a little after nitrated treatment indicating the increasing intensity of the C]O onto the CX-72R surface [19].…”

Section: Resultsmentioning

confidence: 98%