Results 81 to 90 of about 2,076,023 (303)

Direct digital control of an efficient silicon+lequid crystal phase shifter [PDF]

, 2014
We demonstrate a phase shifter based on a silicon slot waveguide infiltrated with liquid crystal. We achieve a phase shift of 73 pi for a 5V drive voltage, with a voltage-length product of 0.022V.mm around 1V. We can drive the phase shifter directly with
Absil, P, Ako, Thomas, Beeckman, Jeroen, Bogaerts, Wim, Koos, C, Korn, D, Lepage, G, Leuthold, J, Pantouvaki, M, Puthenparampil George, John, Verheyen, P, Xing, Yufei, Yu, Hui   +12 more
core  

Deterministic and cascadable conditional phase gate for photonic qubits

, 2012
Previous analyses of conditional \phi-phase gates for photonic qubits that treat cross-phase modulation (XPM) in a causal, multimode, quantum field setting suggest that a large (~\pi rad) nonlinear phase shift is always accompanied by fidelity-degrading ...
Chuang, Isaac L., Chudzicki, Christopher, Shapiro, Jeffrey H.   +2 more
core   +1 more source

Phase-locking characteristics of coupled ridge-waveguide InP/InGaAsP diode lasers [PDF]

, 1984
The phase-locking characteristics of two coupled, ridge waveguide InP/InGaAsP diode lasers emitting at 1.2 µm were investigated experimentally. The phase locking of the lasers was verified by the observation of phase-locked modes (supermodes) in the ...
Kapon, E., Lu, L. T., Margalit, S., Rav-Noy, Z., Yariv, A., Yi, M.   +5 more
core   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

A conditional-phase switch at the single-photon level

, 2002
We present an experimental realization of a two-photon conditional-phase switch, related to the ``$c$-$\phi $'' gate of quantum computation. This gate relies on quantum interference between photon pairs, generating entanglement between two optical modes ...
A. K. Ekert, A. Muller, A. Rauschenbeutel, A. Sørensen, Aephraim M. Steinberg, B. E. Kane, C. H. Bennett, C. H. Bennett, C. Monroe, D. Bouwmeester, D. G. Cory, D. Gottesman, D. Jaksch, E. Knill, G. K. Brennen, G. Nogues, G. T. Foster, J. A. Jones, J. D. Franson, J. I. Cirac, J. W. Noh, Jeffrey S. Lundeen, K. J. Resch, K. J. Resch, K. J. Resch, Kevin J. Resch, M. A. Nielsen, M. M. Kash, N. A. Gershenfeld, P. W. H. Pinkse, Q. A. Turchette, R. Loudon, S. E. Harris, W. T. Buttler   +33 more
core   +2 more sources

Giant phase modulation in a Mach-Zehnder exciton-polariton interferometer [PDF]

, 2013
We report on a new mechanism of giant phase modulation. The phenomenon arises when a dispersed photonic mode (slow light) strongly couples to an excitonic resonance.
Amo, A., Bloch, J., Flayac, H., Gallopin, E., Lemaître, A., Malpuech, G., Nguyen, H. S., Sagnes, I., Solnyshkov, D., Sturm, C., Tanese, D.   +10 more
core   +3 more sources

New technique for digital phase-shift control

Electronics Letters, 1969
A scheme for digital phase-shift control of a locked oscillator is proposed. If the required operating frequency is f and the locking frequency is nf, a reversal in phase of the locking frequency will shift the phase of the locked oscillator by π/n, under suitable conditions.
openaire   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Mechanisms of IgE‐mediated food allergy and the role of allergen‐specific B cells

FEBS Letters, EarlyView.
Food allergy arises when allergen‐specific B cells preferentially produce immunoglobulin E (IgE) antibodies against harmless foods. This article explains the mechanisms driving IgE‐mediated reactions, highlights the central role of these B cells, and discusses how natural tolerance (NT) and oral immunotherapy (OIT) can reshape allergic immune responses.
Juan‐Felipe López, Özge Yilmaz Ardicli, Mübeccel Akdis   +2 more
wiley   +1 more source