We investigate the optical response of graphene nanoribbons (GNRs) using broadband nonlinear generation and detection capabilities nanoscale junctions created at LaAlO3/SrTiO3 interface. GNR nanoclusters measured to be as small 1–2 GNRs in size are deposited on LaAlO3 surface with an atomic force microscope tip. Time-resolved probes reveal a strong, gate-tunable second third harmonic response, ...

We study the propagation of optical vortices in a system which consists tandem multi-helical and twisted anisotropic fiber. show that at certain resonance regimes fibers such allows one to control sign flipping topological charge circular polarization input vortex. Moreover, parameters multihelical are established for implementation logical operation corresponds sequential executing two fundame...

Quantum algorithms may be described by sequences of unitary transformations called quantum gates and measurements applied to the quantum register of n quantum bits, qubits. A collection of quantum gates is called universal if it can be used to construct any n-qubit gate. In 1995, the universality of the set of one-qubit gates and controlled NOT gate was shown by Barenco et al. using QR decompos...