207,417 research outputs found
Plasmonics for emerging quantum technologies
Expanding the frontiers of information processing technologies and, in
particular, computing with ever increasing speed and capacity has long been
recognized an important societal challenge, calling for the development of the
next generation of quantum technologies. With its potential to exponentially
increase computing power, quantum computing opens up possibilities to carry out
calculations that ordinary computers could not finish in the lifetime of the
Universe, while optical communications based on quantum cryptography become
completely secure. At the same time, the emergence of Big Data and the ever
increasing demands of miniaturization and energy saving technologies bring
about additional fundamental problems and technological challenges to be
addressed in scientific disciplines dealing with light-matter interactions. In
this context, quantum plasmonics represents one of the most promising and
fundamental research directions and, indeed, the only one that enables ultimate
miniaturization of photonic components for quantum optics when being taken to
extreme limits in light-matter interactions.Comment: To appear in Nanophotonic
Customer-engineer relationship management for converged ICT service companies
Thanks to the advent of converged communications services (often referred to as ‘triple play’), the next generation Service Engineer will need radically different skills, processes and tools from today’s counterpart. Why? in order to meet the challenges of installing and maintaining services based on multi-vendor software and hardware components in an IP-based network environment. The converged services environment is likely to be ‘smart’ and support flexible and dynamic interoperability between appliances and computing devices. These radical changes in the working environment will inevitably force managers to rethink the role of Service Engineers in relation to customer relationship management. This paper aims to identify requirements for an information system to support converged communications service engineers with regard to customer-engineer relationship management. Furthermore, an architecture for such a system is proposed and how it meets these requirements is discussed
Emulating Digital Logic using Transputer Networks (Very High Parallelism = Simplicity = Performance)
Modern VLSI technology has changed the economic rules by which the balance between processing
power, memory and communications is decided in computing systems. This will have a profound
impact on the design rules for the controlling software. In particular, the criteria for judging efficiency
of the algorithms will be somewhat different. This paper explores some of these implications through
the development of highly parallel and highly distributable algorithms based on occam and transputer
networks. The major results reported are a new simplicity for software designs, a corresponding ability
to reason (formally and informally) about their properties, the reusability of their components and some
real performance figures which demonstrate their practicality. Some guidelines to assist in these designs
are also given. As a vehicle for discussion, an interactive simulator is developed for checking the
functional and timing characteristics of digital logic circuits of arbitrary complexity
6G Mobile-Edge Empowered Metaverse: Requirements, Technologies, Challenges and Research Directions
The Metaverse has emerged as the successor of the conventional mobile
internet to change people's lifestyles. It has strict visual and physical
requirements to ensure an immersive experience (i.e., high visual quality, low
motion-to-photon latency, and real-time tactile and control experience).
However, the current communication systems fall short to satisfy these
requirements. Mobile edge computing (MEC) has been indispensable to enable low
latency and powerful computing. Moreover, the sixth generation (6G) networks
promise to provide end users with high-capacity communications to MEC servers.
In this paper, we bring together the primary components into a 6G mobile-edge
framework to empower the Metaverse. This includes the usage of heterogeneous
radios, intelligent reflecting surfaces (IRS), non-orthogonal multiple access
(NOMA), and digital twins (DTs). We also discuss novel communication paradigms
(i.e., semantic communication, holographic-type communication, and haptic
communication) to further satisfy the demand for human-type communications and
fulfil user preferences and immersive experiences in the Metaverse
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