The Experts below are selected from a list of 282 Experts worldwide ranked by ideXlab platform
John Thompson - One of the best experts on this subject based on the ideXlab platform.
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Multiple four-wave mixing process in an optical fiber
Optics Letters, 1991Co-Authors: John ThompsonAbstract:We report the results of a theoretical and experimental investigation of multiple four-wave mixing processes in the simultaneous propagation of two pump waves through an optical fiber. The pump waves at frequencies ω1 and ω2 are observed to generate sidebands at 2ω2 − ω1 and 2ω1 − ω2 owing to four-wave mixing in the fiber. The power in the sidebands is studied as a function of pump power and detuning. The experimental observations provide a Direct Verification of the theoretical formalism.
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Multiple four-wave mixing process in an optical fiber.
Optics letters, 1991Co-Authors: John Thompson, Rajarshi RoyAbstract:We report the results of a theoretical and experimental investigation of multiple four-wave mixing processes in the simultaneous propagation of two pump waves through an optical fiber. The pump waves at frequencies omega(1) and omega(2) are observed to generate sidebands at 2omega(2) - omega(1) and 2omega(1) - omega(2) owing to four-wave mixing in the fiber. The power in the sidebands is studied as a function of pump power and detuning. The experimental observations provide a Direct Verification of the theoretical formalism.
Rajarshi Roy - One of the best experts on this subject based on the ideXlab platform.
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Multiple four-wave mixing process in an optical fiber.
Optics letters, 1991Co-Authors: John Thompson, Rajarshi RoyAbstract:We report the results of a theoretical and experimental investigation of multiple four-wave mixing processes in the simultaneous propagation of two pump waves through an optical fiber. The pump waves at frequencies omega(1) and omega(2) are observed to generate sidebands at 2omega(2) - omega(1) and 2omega(1) - omega(2) owing to four-wave mixing in the fiber. The power in the sidebands is studied as a function of pump power and detuning. The experimental observations provide a Direct Verification of the theoretical formalism.
Marco Bellini - One of the best experts on this subject based on the ideXlab platform.
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Subtracting photons from arbitrary light fields: experimental test of coherent state invariance by single-photon annihilation
New Journal of Physics, 2008Co-Authors: Alessandro Zavatta, Valentina Parigi, Myungshik Kim, Marco BelliniAbstract:The operator annihilating a single quantum of excitation in a bosonic field is one of the cornerstones for the interpretation and prediction of the behavior of the microscopic quantum world. Here we present a systematic experimental study of the effects of single-photon annihilation on some paradigmatic light states. In particular, by demonstrating the invariance of coherent states by this operation, we provide the first Direct Verification of their definition as eigenstates of the photon annihilation operator.
Jürgen Köhler - One of the best experts on this subject based on the ideXlab platform.
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Optical spectroscopy of individual objects
Naturwissenschaften, 2001Co-Authors: Jürgen KöhlerAbstract:With the introduction of single-molecule spectroscopy it was immediately realised that studying molecules and molecular aggregates individually opens up a completely new approach to elucidate information commonly washed out by the ensemble average process. In contrast with ensemble experiments, this technique permits us to determine the whole distribution of parameters rather than their moments. This allows a more Direct Verification of theoretical models without the need to average over (unknown) distributions to calculate observables. Here we illustrate how single-molecule spectroscopy can be utilised to circumvent the classical diffraction limit of microscopy and show an investigation of the electronic structure of pigment protein complexes that are relevant for bacterial photosynthesis.
D. Angeli - One of the best experts on this subject based on the ideXlab platform.
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CDC - Frozen state conditions for asymptotic consensus of time-varying cooperative nonlinear networks
Automatica, 2016Co-Authors: S. Manfredi, D. AngeliAbstract:In this paper we present new results on asymptotic consensus for continuous-time nonlinear time varying cooperative networks. We endow the well known assumption of integral connectivity proposed by Moreau with a remarkable additional feature of being frozen in state variables, making its Direct Verification more straightforward. Moreover, we give an estimate of the exponential rate of convergence towards the agreement manifold.
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Frozen state conditions for asymptotic consensus of time-varying cooperative nonlinear networks
52nd IEEE Conference on Decision and Control, 2013Co-Authors: S. Manfredi, D. AngeliAbstract:In this paper we present new results on asymptotic consensus for continuous-time nonlinear time varying cooperative networks. We endow the well known assumption of integral connectivity proposed by Moreau with a remarkable additional feature of being frozen in state variables, making its Direct Verification more straightforward. Moreover, we give an estimate of the exponential rate of convergence towards the agreement manifold