53 citations · 407 across the 46 of their papers we have counts for
15 papers · 1 filter
Special Relativity in Quantum Phase Space
Daniela Dragoman
A phase space treatment of special relativity of quantum systems is developed. In this approach a quantum particle remains localized if subject to inertial transformations, the loc…
Quantum Electric Circuits Analogous to Ballistic Conductors
Daniela Dragoman
The conductance steps in a constricted two-dimensional electron gas and the minimum conductivity in graphene are related to a new uncertainty relation between electric charge and c…
Metamaterials for Ballistic Electrons
Daniela Dragoman, Mircea Dragoman
The paper presents a metamaterial for ballistic electrons, which consists of a quantum barrier formed in a semiconductor with negative effective electron mass. This barrier is the…
Negative Differential Resistance of Electrons in Graphene Barrier
Daniela Dragoman, Mircea Dragoman
The graphene is a native two-dimensional crystal material consisting of a single sheet of carbon atoms. In this unique one-atom-thick material, the electron transport is ballistic…
Evidence Against Klein Paradox in Graphene
Daniela Dragoman
It is demonstrated that both transmission and reflection coefficients associated to the Klein paradox at a step barrier are positive and less than unity, so that the particle-antip…
Photon States from Propagating Complex Electromagnetic Fields
Daniela Dragoman
A wavefunction for single- and many-photon states is defined by associating photons with different momenta to different spectral and polarization components of the classical, gener…