181 citations · 322 across the 8 of their papers we have counts for
9 papers
Mode-center Placement of Monolayer WS in a Photonic Polymer Waveguide
Angelina Frank, Justin Zhou, James A. Grieve +8
Effective integration of 2D materials such as monolayer transition metal dichalcogenides (TMDs) into photonic waveguides and integrated circuits is being intensely pursued due to t…
Measuring valley polarization in two-dimensional materials with second-harmonic spectroscopy
Yi Wei Ho, Henrique Guimarães Rosa, Ivan Verzhbitskiy +6
A population imbalance at different valleys of an electronic system lowers its effective rotational symmetry. We introduce a technique to measure such imbalance - a valley polariza…
Elastomeric waveguide on-chip coupling of an encapsulated MoS monolayer
Filip Auksztol, Daniele Vella, Ivan Verzhbitskiy +6
We propose a robust photonic platform for encapsulation and addressing of optically active 2D- and nano-materials. Our implementation utilises a monolayer of MoS transition met…
Tunable interferometers on a flexible polymer chip
James A. Grieve, Chengcan Li, Kian Fong Ng +3
To facilitate the implementation of large scale photonic quantum walks, we have developed a polymer waveguide platform capable of robust, polarization insensitive single mode guidi…
Mapping a quantum walk by tuning the coupling coefficient
Kian Fong Ng, Manuel J. L. F. Rodrigues, José Viana-Gomes +2
We present a method to map the evolution of photonic random walks that is compatible with nonclassical input light. Our approach leverages a newly developed flexible waveguide plat…
Mechanically tunable integrated beamsplitters on a flexible polymer platform
James A. Grieve, Kian Fong Ng, Manuel J. L. F. Rodrigues +2
We report the development of a monolithic, mechanically tunable waveguide platform based on the flexible polymer polydimethyl siloxane (PDMS). Such devices preserve single mode gui…
Solution of the quantum harmonic oscillator plus a delta-function potential at the origin: The oddness of its even-parity solutions
J. Viana-Gomes, N. M. R. Peres
We derive the energy levels associated with the even-parity wave functions of the harmonic oscillator with an additional delta-function potential at the origin. Our results bring t…
Unified description of the dc conductivity of monolayer and bilayer graphene at finite densities based on resonant scatterers
A. Ferreira, J. Viana Gomes, Johan Nilsson +3
We show that a coherent picture of the dc conductivity of monolayer and bilayer graphene at finite electronic densities emerges upon considering that strong short-range potentials…
Magnetism in strained graphene dots
J. Viana-Gomes, Vitor M. Pereira, N. M. R. Peres
We study the magnetization of square and hexagonal graphene dots. It is shown that two classes of hexagonal dots have a second order phase transition at a critical Hubbard energy $…