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Title:

Patent portfolio races in concentrated markets for technology

Publisher:

Universitätsbibliothek der Technischen Universität München ; University library of the Munich University of Technology

Year of Publication:

2014-03-28

Document Type:

article

Subjects:

info:eu-repo/classification/ddc:330

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info:eu-repo/semantics/openAccess

info:eu-repo/semantics/openAccess Minimize

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info:eu-repo/grantAgreement/EC/FP7/

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Title:

Photoionisation detection of single 87Rb-atoms using channel electron multipliers

Description:

Fast and efficient detection of single atoms is a universal requirement concerning modern experiments in atom physics, quantum optics, and precision spectroscopy. In particular for future quantum information and quantum communication technologies, the efficient readout of qubit states encoded in single atoms or ions is an elementary prerequisite...

Fast and efficient detection of single atoms is a universal requirement concerning modern experiments in atom physics, quantum optics, and precision spectroscopy. In particular for future quantum information and quantum communication technologies, the efficient readout of qubit states encoded in single atoms or ions is an elementary prerequisite. The rapid development in the eld of quantum optics and atom optics in the recent years has enabled to prepare individual atoms as quantum memories or arrays of single atoms as qubit registers. With such systems, the implementation of quantum computation or quantum communication protocols seems feasible. This thesis describes a novel detection scheme which enables fast and efficient state analysis of single neutral atoms. The detection scheme is based on photoionisation and consists of two parts: the hyperfine-state selective photoionisation of single atoms and the registration of the generated photoion-electron pairs via two channel electron multipliers (CEMs). In this work, both parts were investigated in two separate experiments. For the first step, a photoionisation probability of p_ion = 0.991 within an ionisation time of t_ion = 386 ns is achieved for a single 87Rb-atom in an optical dipole trap. For the second part, a compact detection system for the ionisation fragments was developed consisting of two opposing CEM detectors. Measurements show that single neutral atoms can be detected via their ionisation fragments with a detection efficiency of eta_atom = 0.991 within a detection time of t_det = 415.5 ns. In a future combined setup, this will allow the state-selective readout of optically trapped, single neutral 87Rb-atoms via photoionisation detection with an estimated detection efficiency eta = 0.982 and a detection time of t_tot = 802 ns. Although initially developed for single 87Rb-atoms, the concept of photoionisation detection is in principle generally applicable to any atomic or molecular species. As efficient readout unit for single atoms or even ions, it might represent a considerable alternative to conventional detection methods due to the high optical access and the large sensitive volume of the CEM detection system. Additionally, its spatial selectivity makes it particularly suited for the readout of single atomic qubit sites in arrays of neutral atoms as required in future applications such as the quantum-repeater or quantum computation with neutral atoms. The obtained high detection efficiency eta and fast detection time t_tot of the new detection method fullfill the demanding detector requirements for a future loophole-free test of Bell's inequality under strict Einstein locality conditions using two optically trapped, entangled 87Rb-atoms at remote locations. In such a configuration, the locality and the detection loophole can be simultaneously closed in one experiment. Minimize

Publisher:

Ludwig-Maximilians-Universität München

Year of Publication:

2011-11-08

Document Type:

Dissertation ; NonPeerReviewed

Subjects:

Fakultät für Physik

Fakultät für Physik Minimize

DDC:

540 Chemistry & allied sciences *(computed)*

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http://edoc.ub.uni-muenchen.de/13632/

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Title:

MR-tomographische Evaluation der Inzidenz zerebraler Embolien bei Patienten mit Vorhofflimmern und linksatrialen Thromben [Elektronische Ressource] / vorgelegt von Florian Henkel

Description:

Bonn, Univ., Diss., 2007

Bonn, Univ., Diss., 2007 Minimize

Year of Publication:

2007

Document Type:

Online-Ressource

Language:

ger

Subjects:

610 Medizin ; Gesundheit

610 Medizin ; Gesundheit Minimize

Rights:

lizenzfrei

lizenzfrei Minimize

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Title:

Patent portfolio races in concentrated markets for technology

Description:

Patent application numbers grow exponentially in many industries, a phenomenon that has been linked to high fragmentation of patent ownership. Contradicting these findings and theo- retical arguments, we show that such fragmentation is not a precondition for sudden and strong increases in patenting. We describe and analyze a patent portfolio rac...

Patent application numbers grow exponentially in many industries, a phenomenon that has been linked to high fragmentation of patent ownership. Contradicting these findings and theo- retical arguments, we show that such fragmentation is not a precondition for sudden and strong increases in patenting. We describe and analyze a patent portfolio race in an industry with highly concentrated patent ownership, namely the newspaper printing machines oligop- oly. Triangulating data from patent analysis, interviews, and document research, we find that patent strategy change by one player triggered a patent portfolio race with its main competi- tor. Implications for managers are that increasing patent output may yield temporary advan- tages but, as in a price war, implies the risk of a prisoner’s dilemma-type outcome with poten- tially severe implications for effectiveness and efficiency of the innovation process. Minimize

Year of Publication:

2014-07-03

Document Type:

report ; doc-type:report

Language:

eng

Subjects:

ddc:330

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Title:

Autocorrelation functions in phase-ordering kinetics from local scale-invariance

Description:

The explicit calculation of the scaling form of the two-time autocorrelation function in phase-ordering kinetics and in those cases of non-equilibrium critical dynamics where the dynamical exponent z=2 through the extension of dynamical scaling to local scale-invariance is reviewed. Conceptually, this mainly requires an extension from the usuall...

The explicit calculation of the scaling form of the two-time autocorrelation function in phase-ordering kinetics and in those cases of non-equilibrium critical dynamics where the dynamical exponent z=2 through the extension of dynamical scaling to local scale-invariance is reviewed. Conceptually, this mainly requires an extension from the usually considered d-dimensional ageing or Schr\"odinger algebras to a new kind of representation of the conformal algebra in d+2 dimensions. Explicit tests in several exactly solved models of simple magnets and through simulations in the 2D Ising and q-states Potts models (q=2,3,8) quenched to T<T_c are presented and the extension to systems with non-equilibrium steady-states is discussed through two exactly solvable models as well. In the context of surface growth models, possible generalizations for a dynamical exponent z=4 and beyond are discussed. ; Comment: Latex2e, 41 pages with 4 figures included, IOP macros Minimize

Year of Publication:

2007-03-08

Document Type:

text

Subjects:

Condensed Matter - Statistical Mechanics ; High Energy Physics - Theory ; Mathematical Physics

Condensed Matter - Statistical Mechanics ; High Energy Physics - Theory ; Mathematical Physics Minimize

DDC:

539 Modern physics *(computed)*

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Title:

Kinetics of phase-separation in the critical spherical model and local scale-invariance

Description:

The scaling forms of the space- and time-dependent two-time correlation and response functions are calculated for the kinetic spherical model with a conserved order-parameter and quenched to its critical point from a completely disordered initial state. The stochastic Langevin equation can be split into a noise part and into a deterministic part...

The scaling forms of the space- and time-dependent two-time correlation and response functions are calculated for the kinetic spherical model with a conserved order-parameter and quenched to its critical point from a completely disordered initial state. The stochastic Langevin equation can be split into a noise part and into a deterministic part which has local scale-transformations with a dynamical exponent z=4 as a dynamical symmetry. An exact reduction formula allows to express any physical average in terms of averages calculable from the deterministic part alone. The exact spherical model results are shown to agree with these predictions of local scale-invariance. The results also include kinetic growth with mass conservation as described by the Mullins-Herring equation. ; Comment: Latex2e with IOP macros, 28 pp, 2 figures, final form Minimize

Year of Publication:

2006-11-26

Document Type:

text

Subjects:

Condensed Matter - Statistical Mechanics ; Condensed Matter - Soft Condensed Matter ; High Energy Physics - Theory ; Mathematical Physics ; Physics - Chemical Physics

Condensed Matter - Statistical Mechanics ; Condensed Matter - Soft Condensed Matter ; High Energy Physics - Theory ; Mathematical Physics ; Physics - Chemical Physics Minimize

DDC:

612 Human physiology *(computed)*

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Title:

Patent Portfolio Races in Concentrated Markets for Technology

Description:

Patent application numbers grow exponentially in many industries, a phenomenon that has been linked to high fragmentation of patent ownership. Contradicting these findings and theoretical arguments, we show that such fragmentation is not a precondition for sudden and strong increases in patenting. We describe and analyze a patent portfolio race ...

Patent application numbers grow exponentially in many industries, a phenomenon that has been linked to high fragmentation of patent ownership. Contradicting these findings and theoretical arguments, we show that such fragmentation is not a precondition for sudden and strong increases in patenting. We describe and analyze a patent portfolio race in an industry with highly concentrated patent ownership, namely the newspaper printing machines oligopoly. Triangulating data from patent analysis, interviews, and document research, we find that patent strategy change by one player triggered a patent portfolio race with its main competitor. Implications for managers are that increasing patent output may yield temporary advantages but, as in a price war, implies the risk of a prisoner’s dilemma-type outcome with potentially severe implications for effectiveness and efficiency of the innovation process. ; Patent Strategy; Motives to Patent; Intellectual Property; Patent Thickets Minimize

Document Type:

preprint

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Title not available

Author:

Description:

Photoionisation detection of single

Photoionisation detection of single Minimize

Contributors:

The Pennsylvania State University CiteSeerX Archives

Year of Publication:

2012-06-25

Source:

http://edoc.ub.uni-muenchen.de/13632/1/Henkel_Florian_Alexander.pdf

http://edoc.ub.uni-muenchen.de/13632/1/Henkel_Florian_Alexander.pdf Minimize

Document Type:

text

Language:

en

Rights:

Metadata may be used without restrictions as long as the oai identifier remains attached to it.

Metadata may be used without restrictions as long as the oai identifier remains attached to it. Minimize

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Title:

Local scale-invariances in the bosonic contact and pair-contact processes

Author:

Description:

Local scale-invariance for ageing systems without detailed balance is tested through studying the dynamical symmetries of the critical bosonic contact process and the critical bosonic pair-contact process.Their field-theoretical actions can be split into a Schr\"odinger-invariant term and a pure noise term. It is shown that the two-time response...

Local scale-invariance for ageing systems without detailed balance is tested through studying the dynamical symmetries of the critical bosonic contact process and the critical bosonic pair-contact process.Their field-theoretical actions can be split into a Schr\"odinger-invariant term and a pure noise term. It is shown that the two-time response and correlation functions are reducible to certain multipoint response functions which depend only on the Schr\"odinger-invariant part of the action. For the bosonic contact process, the representation of the Schr\"odinger group can be derived from the free diffusion equation, whereas for the bosonic pair-contact process, a new representation of the Schr\"odinger group related to a non-linear Schr\"odinger equation with dimensionful couplings is constructed. The resulting predictions of local scale-invariance for the two-time responses and correlators are completely consistent with the exactly-known results in both models. ; Comment: Latex2e, 28 pp, with IOP macros. A new paragraphe was added in the first section. Version to appear in J. Phys. A: Math. Gen Minimize

Year of Publication:

2005-10-28

Document Type:

text

Subjects:

Condensed Matter - Statistical Mechanics ; High Energy Physics - Theory ; Mathematical Physics

Condensed Matter - Statistical Mechanics ; High Energy Physics - Theory ; Mathematical Physics Minimize

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Title:

Phase-ordering kinetics of two-dimensional disordered Ising models

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Description:

The phase-ordering kinetics of the ferromagnetic two-dimensional Ising model with uniform disorder is investigated by intensive Monte Carlo simulations. Taking into account finite-time corrections to scaling, simple ageing behaviour is observed in the two-time responses and correlators. The dynamical exponent z and the form of the scaling functi...

The phase-ordering kinetics of the ferromagnetic two-dimensional Ising model with uniform disorder is investigated by intensive Monte Carlo simulations. Taking into account finite-time corrections to scaling, simple ageing behaviour is observed in the two-time responses and correlators. The dynamical exponent z and the form of the scaling functions only depend on the ratio eps/T, where eps describes the width of the distribution of the disorder. The agreement of the predictions of local scale-invariance generalised to z<> 2 for the two-time scaling functions of response and correlations with the numerical data provides a direct test of generalised Galilei-invariance. ; Comment: Latex2e with epl macros, 6 pages, 4 figures included Minimize

Year of Publication:

2007-09-20

Document Type:

text

Subjects:

Condensed Matter - Statistical Mechanics ; Condensed Matter - Disordered Systems and Neural Networks ; High Energy Physics - Theory ; Mathematical Physics

Condensed Matter - Statistical Mechanics ; Condensed Matter - Disordered Systems and Neural Networks ; High Energy Physics - Theory ; Mathematical Physics Minimize

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