ACM NanoCom 2019

Invited Talks

Invited Talk 1: TBC
Urbashi Mitra (University of Southern California, USA)
Invited Talk 2: Graphene epsilon-near-zero plasmonic crystals
Marios Matthaiakis Marios Mattheakis
(Harvard University, USA)

Controlling the structure of materials at the sub-wavelength scale can produce metamaterials with properties that not found under normal circumstances, such as negative-refractive-index and epsilon-near-zero (ENZ) behavior. The advent of two-dimensional materials like graphene makes it possible to produce multilayer structures with atomic-level control of features in the direction perpendicular to the stacked layers, which provides high quantum efficiency for light-matter interaction. Graphene-based plasmonic crystals can be used for manipulation of electromagnetic (EM) waves in a wide range of frequencies including the terahertz band which can be crucial in signal processing and nano-communication. We propose a systematic approach, in terms of design characteristics, for constructing metamaterials with linear, elliptical, and hyperbolic dispersion relations which produce ENZ behavior, normal or negative-index diffraction. We focus on ENZ metamaterials which exhibit interesting properties, including EM wave propagation through arbitrary size channels and with no phase delay. The ENZ behavior is emulated by a Dirac cone in the wavenumber space and it is a universal property within a family of plasmonic crystals consisting of two-dimensional metals. The optical properties of the proposed device are sensitive to structural features like periodicity of the dielectric medium and thickness imperfections, and can be dynamically tuned by controlling the operating frequency and the doping level of graphene.

Invited Talk 3: Quantum Communications: From Space to the Nano
Robert Malaney Robert Malaney
(University of New South Wales, Australia)

Quantum communication via satellites offers up a paradigm shift in telecommunications. Providing for unparalleled communication security, this emerging technology will also lead us into the development of the global quantum internet. This research area was given a large boost recently with the launch of the World's first quantum satellite by China. This new satellite creates entangled photon pairs, beaming them down to Earth for subsequent processing and use in a range of communication scenarios. The next frontier in this area is the development of a quantum communication `satellite-swarm’ – a formation of small inexpensive nano-satellites working together to route quantum information over large distances in the vacuum of space. The development of such a network has motivated much effort in the design of new miniaturised quantum-enabled technologies that can operate efficiently in the harsh environment of space. In this talk I review these efforts and discuss how some of the new techniques being developed could also be used for quantum communications at the nano-scale. Development of nano-scale quantum communication is vital for interfacing different processing sites within future quantum computers and for the connections of those quantum computers to the wider quantum internet.

Invited Talk 4: TBC
Alan O'Riordan (Tyndall National Institute, Ireland)
Invited Talk 5: Power Distribution and Performance Analysis of Terahertz Communications in Artificial Skin for Future Healthcare Applications
Akram Alomainy Akram Alomainy
(Queen Mary University of London, UK)

Apart from the effect of path loss and signal-dependent molecular absorption noise, the capabilities of in-vivo nanocommunication at the Terahertz (THz) frequencies are also strictly influenced by the distribution of power transmission in the frequency domain. In this paper, artificial skin with different fibroblast cell densities are considered as THz communication mediums, signal-to-noise ratio (SNR) and channel capacity as a function of the transmitted signal power for f lat and Gaussian-shaped distribution is quantified. In addition, the achievable communication distance of THz communication inside the artificial skin is evaluated. The results show that -30 dBW using flat distribution and -40 dBW with Gaussian distribution can provide optimal SNR without posing more energy requirement on nano-transceivers. The achievable communication range in dermal equivalent is strictly limited to about 1 to 2 mm. Gaussian-shaped power distribution can provide higher SNR but lower capacity comparing with flat distribution. These results provide fundamentals in building future intra-body nanonetworks.

Invited Talk 6: TBC
Stephanie Wehner (QuTech, Netherlands)

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Header Background: The Ha'Penny Bridge, Dublin, By Samuel Frederick Brocas [Public domain], via Wikimedia Commons