The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Edo Waks - One of the best experts on this subject based on the ideXlab platform.
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low photon number optical switching with a single quantum dot coupled to a photonic crystal cavity
Physical Review Letters, 2012Co-Authors: Ranojoy Bose, Deepak Sridharan, Glenn S. Solomon, Edo WaksAbstract:We demonstrate fast nonlinear optical switching between two laser pulses with as few as 140 photons of pulse energy by utilizing strong coupling between a single quantum dot (QD) and a photonic crystal cavity. The cavity-QD coupling is modified by a detuned pump pulse, resulting in a modulation of the scattered and transmitted amplitude of a time synchronized probe pulse that is resonant with the QD. The temporal switching response is measured to be as fast as 120 ps, demonstrating the ability to perform optical switching on picosecond timescales.
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Low photon number nonlinear a single quantum dot coupled to a photonic crystal cavity
IEEE Photonics Conference 2012, 2012Co-Authors: Edo Waks, Deepak Sridharan, Ranojoy Bose, Glenn S. SolomonAbstract:We describe our work on engineering nonlinear optical devices using quantum dots coupled to optical resonators. These systems enable large optical Stark shifts and all optical switching with low photon numbers.
Ranojoy Bose - One of the best experts on this subject based on the ideXlab platform.
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low photon number optical switching with a single quantum dot coupled to a photonic crystal cavity
Physical Review Letters, 2012Co-Authors: Ranojoy Bose, Deepak Sridharan, Glenn S. Solomon, Edo WaksAbstract:We demonstrate fast nonlinear optical switching between two laser pulses with as few as 140 photons of pulse energy by utilizing strong coupling between a single quantum dot (QD) and a photonic crystal cavity. The cavity-QD coupling is modified by a detuned pump pulse, resulting in a modulation of the scattered and transmitted amplitude of a time synchronized probe pulse that is resonant with the QD. The temporal switching response is measured to be as fast as 120 ps, demonstrating the ability to perform optical switching on picosecond timescales.
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Low photon number nonlinear a single quantum dot coupled to a photonic crystal cavity
IEEE Photonics Conference 2012, 2012Co-Authors: Edo Waks, Deepak Sridharan, Ranojoy Bose, Glenn S. SolomonAbstract:We describe our work on engineering nonlinear optical devices using quantum dots coupled to optical resonators. These systems enable large optical Stark shifts and all optical switching with low photon numbers.
Satyabrata Paul - One of the best experts on this subject based on the ideXlab platform.
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L(0, 1)-Labelling of Trapezoid Graphs
International Journal of Applied and Computational Mathematics, 2017Co-Authors: Satyabrata PaulAbstract:L (0, 1)-labelling of a graph $$G=(V,E)$$ G = ( V , E ) is a function f from the vertex set V ( G ) to the set of non-negative integers such that adjacent vertices get number zero apart, and vertices at distance two get distinct numbers. The L (0, 1)-labelling number denoted by $$\lambda _{0,1}(G)$$ λ 0 , 1 ( G ) of G is the minimum range of labels over all such labelling. In this article, it is shown that, for a trapezoid graph G with maximum vertex degree $$\Delta $$ Δ , the upper bound of $$\lambda _{0,1}(G)$$ λ 0 , 1 ( G ) is $$\Delta -1$$ Δ - 1 .
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L(0,1)-labelling of Permutation Graphs
Journal of Mathematical Modelling and Algorithms in Operations Research, 2015Co-Authors: Satyabrata PaulAbstract:L (0,1)-labelling of a graph G =( V , E ) is a function f from the vertex set V ( G ) to the set of non-negative integers such that adjacent vertices get number zero apart, and vertices at distance two get distinct numbers. The goal of L (0,1)-labelling problem is to produce a legal labelling that minimize the largest label used. In this article, it is shown that, for a permutation graph G with maximum vertex degree Δ, the upper bound of λ _0,1( G ) is Δ−1. Finally, we prove that the result is exact for bipartite permutation graph.
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L(2,1)-labeling of interval graphs
Journal of Applied Mathematics and Computing, 2015Co-Authors: Satyabrata PaulAbstract:An $$L(2,1)$$ L ( 2 , 1 ) -labeling of a graph $$G=(V,E)$$ G = ( V , E ) is a function $$f$$ f from the vertex set $$V(G)$$ V ( G ) to the set of non-negative integers such that adjacent vertices get numbers at least two apart, and vertices at distance two get distinct numbers. The $$L(2,1)$$ L ( 2 , 1 ) -labeling number denoted by $$\lambda _{2,1}(G)$$ λ 2 , 1 ( G ) of $$G$$ G is the minimum range of labels over all such labeling. In this article, it is shown that, for an interval graph $$G$$ G , the upper bound of $$\lambda _{2,1}(G)$$ λ 2 , 1 ( G ) is $$\Delta +\omega $$ Δ + ω , where $$\Delta $$ Δ and $$\omega $$ ω represents the maximum degree of the vertices and size of maximum clique respectively. An $$O(m+n)$$ O ( m + n ) time algorithm is also designed to $$L(2,1)$$ L ( 2 , 1 ) -label a connected interval graph, where $$m$$ m and $$n$$ n represent the number of edges and vertices respectively. Extending this idea it is shown that $$\lambda _{2,1}(G)\le \Delta +3\omega $$ λ 2 , 1 ( G ) ≤ Δ + 3 ω for circular-arc graph.
Glenn S. Solomon - One of the best experts on this subject based on the ideXlab platform.
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low photon number optical switching with a single quantum dot coupled to a photonic crystal cavity
Physical Review Letters, 2012Co-Authors: Ranojoy Bose, Deepak Sridharan, Glenn S. Solomon, Edo WaksAbstract:We demonstrate fast nonlinear optical switching between two laser pulses with as few as 140 photons of pulse energy by utilizing strong coupling between a single quantum dot (QD) and a photonic crystal cavity. The cavity-QD coupling is modified by a detuned pump pulse, resulting in a modulation of the scattered and transmitted amplitude of a time synchronized probe pulse that is resonant with the QD. The temporal switching response is measured to be as fast as 120 ps, demonstrating the ability to perform optical switching on picosecond timescales.
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Low photon number nonlinear a single quantum dot coupled to a photonic crystal cavity
IEEE Photonics Conference 2012, 2012Co-Authors: Edo Waks, Deepak Sridharan, Ranojoy Bose, Glenn S. SolomonAbstract:We describe our work on engineering nonlinear optical devices using quantum dots coupled to optical resonators. These systems enable large optical Stark shifts and all optical switching with low photon numbers.
Richard P. Mirin - One of the best experts on this subject based on the ideXlab platform.
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Photon-number-discriminating detection using a quantum-dot, optically gated, field-effect transistor
Nature Photonics, 2007Co-Authors: Eric J Gansen, M. B. Greene, M.-y. Su, S.w. Nam, D. Rosenberg, T.e. Harvey, M A Rowe, Robert Henry Hadfield, Richard P. MirinAbstract:Detectors with the capability to directly measure the photon number of a pulse of light1, 2, 3 enable linear optics quantum computing4, affect the security of quantum communications5, and can be used to characterize6, 7, 8 and herald9 non-classical states of light. Here, we demonstrate the photon-number-resolving capabilities of a quantum-dot, optically gated, field-effect transistor that uses quantum dots as optically addressable floating gates in a GaAs/Al0.2Ga0.8As -doped field-effect transistor. When the active area of the detector is illuminated, photo-generated carriers trapped by quantum dots screen the gate field, causing a persistent change in the channel current that is proportional to the number of confined carriers. Using weak laser pulses, we show that discrete numbers of trapped carriers produce well resolved changes in the channel current. We demonstrate that for a mean photon number of 1.1, decision regions can be defined such that the field-effect transistor determines the number of detected photons with a probability of accuracy greater than 83%.
