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Quantum repeaters rely on interfacing flying qubits with quantum memories. The most common implementations include a narrowband single photon matched in bandwidth and central frequency to an atomic system. Previously, we demonstrated the compatibility of our versatile source of heralded single photons, which is based on parametric down-conversion in a triply resonant whispering-gallery mode resonator, with alkaline transitions [Schunk et al., Optica2015,2,773]. In this paper, we analyse our source in terms of phase matching, available wavelength-tuning mechanisms and applications to narrowband atomic systems. We resonantly address the D1 transitions of caesium and rubidium with this optical parametric oscillator pumped above its oscillation threshold. Below threshold, the efficient coupling of single photons to atomic transitions heralded by single telecom-band photons is demonstrated. Finally, we present an accurate analytical description of our observations. Providing the demonstrated flexibility in connecting various atomic transitions with telecom wavelengths, we show a promising approach to realize an essential building block for quantum repeaters. [ABSTRACT FROM AUTHOR]

This paper deploys the Gramscian concepts of hegemony and consent in order to explore the process whereby nuclear power was brought to Japan. The core argument is that nuclear power was brought to Japan as a consequence of US hegemony. Rather than a simple manifestation of one state exerting material ‘power over' another, bringing nuclear power to Japan involved a series of compromises worked out within and between state and civil society in both Japan and the USA. Ideologies of nationalism, imperialism and modernity underpinned the process, coalescing in post-war debates about the future trajectory of Japanese society, Japan's Cold War alliance with the USA and the role of nuclear power in both. Consent to nuclear power was secured through the generation of a psychological state in the public mind combining the fear of nuclear attack and the hope of unlimited consumption in a nuclear-fuelled post-modern world. [ABSTRACT FROM PUBLISHER]

In the mid-1980s a Royal Commission was established to investigate the conduct of the British nuclear testing program in Australia (1952–1963). It sought to document the impact on military participants, nearby Indigenous communities and downwind rural and urban populations. Amongst the evidence presented were official documents, photographs and films recording the atomic detonations. This article considers as 'visible evidence' previously unknown or withheld films – as both raw and edited footage, now publicly available – that hold the latent potential of filmic 'mutation', evolving from the original utilitarian or propagandist use to be recast as corroborative data that may serve to clarify disputed claims of harm caused by occupational exposure to radiation and ongoing contamination of traditional lands. [ABSTRACT FROM AUTHOR]

This article proposes the use of ritualized walking to mark and remember invisible threats and the 'slow violence' of contaminated landscapes undergoing gradual change. To exemplify the idea, the article describes our proposal for a Plutonium Memorial design, which would be a mnemonic device for marking the location of a proposed nuclear waste storage facility buried under the iconic Las Vegas Strip. Supported with evidence that ritual is commonly used to reinforce collective conscience and memory outside the sacred realm, the core of this memorial design would be regularized and ritualized pilgrimages from one of the most important and symbolic American landscapes, Las Vegas, through the equally prominent Grand Canyon to the less well-known uranium mines in Arizona (the source of nuclear power). Though hyperbolic, the Plutonium Memorial demonstrates how an active cultural-based memorial has potential to preserve narratives around contaminated landscapes. To expand beyond this radical example we schematically speculate on other scenarios that could incorporate more representative (less extreme) haptic rituals around memorials marking slowly unfolding environmental disasters. The intention is to provide new visions for durable memorials built around culture rather than structures, which are engaged with not only the past, but also the future. [ABSTRACT FROM AUTHOR]

Metalloproteins and metal–protein complexes play key roles in all organisms. For example, certain metalloproteins are involved in metal homeostasis and detoxification, or oxidative stress protection; whereas, metals serve as essential cofactors in a large number of metal–protein complexes. Advances in analytical instrumentation as well as informatics have allowed a complete characterization/assessment of both metalloproteins and metal–protein complexes. In some cases, the identification of the protein is a key factor for understanding its physiological function, such as when assessing protein corona in nanoparticles–protein assemblies. On other occasions, the identification of the binding sites in the peptide chain and conformational changes as a consequence of the metal–protein interaction, as well as the lability of this interaction, can explain the role of these metal-based biomolecules in living organisms. This article attempts to critically review the current state-of-the-art of the available analytical techniques for characterizing metalloproteins and metal–protein complexes. Methods for assessing the structure, characterization of the metal-binding sites, as well as the class of proteins involved in some metal (metallic nanoparticle)-binding proteins are discussed. Recent developments when assessing metalloproteins and metal–protein complexes in the clinical, environmental, and food fields, and pioneering research regarding nanoparticle–protein characterization, are also reviewed. [ABSTRACT FROM PUBLISHER]

We generalize two classes ofD-type positive linear maps by permutations. For the first class, we discuss their indecomposability and give conditions when they are indecomposable and decomposable. For the other class, we show that they are atomic. [ABSTRACT FROM AUTHOR]