Results 101 to 110 of about 654,704 (296)

Quantum simulation of the dynamical Casimir effect with trapped ions

New Journal of Physics, 2016
Quantum vacuum fluctuations are a direct manifestation of Heisenberg’s uncertainty principle. The dynamical Casimir effect (DCE) allows for the observation of these vacuum fluctuations by turning them into real, observable photons.
N Trautmann, P Hauke
doaj   +1 more source

Demonstration of an All‐Optical AND Gate Mediated by Photochromic Molecules

Advanced Functional Materials, EarlyView.
A logic AND gate that runs on photons is demonstrated. It relies on two spatially separated photochromic molecules that work in tandem. Abstract The realization of a photonic logic AND gate, i.e. a logic AND gate that runs on photons rather than electrons, and where all steps are controlled by light, is demonstrated. In a proof‐of‐principle experiment,
Heyou Zhang, Max Gießübel, Pankaj Dharpure, Andrea Albert, Vira Niestierkina, Paul Mulvaney, Mukundan Thelakkat, Jürgen Köhler   +7 more
wiley   +1 more source

Controlled light-matter coupling for a single quantum dot embedded in a pillar microcavity using far-field optical lithography

, 2009
Using far field optical lithography, a single quantum dot is positioned within a pillar microcavity with a 50 nm accuracy. The lithography is performed in-situ at 10 K while measuring the quantum dot emission.
Bloch, J., Dousse, A., Lanco, L., Lemaitre, A., Miard, A., Roblin, C., Sagnes, I., Semenova, E., Senellart, P., Suffczynski, J.   +9 more
core   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

Advanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

Quantum Walk in Position Space with Single Optically Trapped Atoms

, 2009
The quantum walk is the quantum analogue of the well-known random walk, which forms the basis for models and applications in many realms of science.
A. Steffen, A. Widera, Carnal, Chapman, Childs, D. Meschede, Hackerm  ller, J.-M. Choi, Karski, L. Forster, M. Karski, Mandel, Perets, Rosenfeld, Sension, Shepherd, W. Alt, Weitz   +17 more
core   +1 more source

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

Advanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao, Christian Weinberger, Jakob Steube, Matthias Bauer, Martin Brehm, Michael Tiemann   +5 more
wiley   +1 more source

Exploring quantum chaos with a single nuclear spin

, 2018
Most classical dynamical systems are chaotic. The trajectories of two identical systems prepared in infinitesimally different initial conditions diverge exponentially with time.
Asaad, Serwan, Firgau, Hannes, Holmes, Catherine, McCallum, Jeffrey C., Milburn, Gerard J., Morello, Andrea, Mourik, Vincent, Pla, Jarryd J.   +7 more
core   +1 more source

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Macroscopically ordered state in exciton system

, 2002
Macroscopically ordered arrays of vortices in quantum liquids, such as superconductors, He-II, and atom Bose-Einstein Condensates (BEC), demonstrate macroscopic coherence in flowing superfluids [1-4].
Butov, L. V., Chemla, D. S., Gossard, A. C.   +2 more
core   +1 more source

Quantum hexaspherical observables for electrons

Annalen der Physik, 2000
AbstractA new quantum algebraic description of relativistic electrons, built on a conformal dynamical symmetry (SO(4,2 )), has recently been proposed to treat localization in space‐time. It is shown here that localization of an electron may be represented by components of a SO(4,2) vector which are quantum generalizations of the hexaspherical ...
Jaekel, Marc-Thierry, Reynaud, Serge
openaire   +4 more sources