321 citations · 338 across the 3 of their papers we have counts for
6 papers
Efficiency of energy transfer in a light-harvesting system under quantum coherence
Alexandra Olaya-Castro, Chiu Fan Lee, Francesca Fassioli Olsen +1
We investigate the role of quantum coherence in the efficiency of excitation transfer in a ring-hub arrangement of interacting two-level systems, mimicking a light-harvesting anten…
Optical signatures of quantum phase transitions in a light-matter system
Timothy C. Jarrett, Alexandra Olaya-Castro, Neil F. Johnson
Information about quantum phase transitions in conventional condensed matter systems, must be sought by probing the matter system itself. By contrast, we show that mixed matter-lig…
A robust one-step catalytic machine for high fidelity anti-cloning and W-state generation in a multi-qubit system
Alexandra Olaya-Castro, Neil F. Johnson, Luis Quiroga
We propose a physically realizable machine which can either generate multiparticle W-like states, or implement high fidelity () anti-cloning of an arbit…
Quantum Information Processing in Nanostructures
Alexandra Olaya-Castro, Neil F. Johnson
Semiconductor quantum dots integrated with ultrafast spectroscopy technology are prime candidates for building scalable architectures for Quantum Information Processing. In this re…
Ultrafast deterministic generation of entanglement in a time-dependent asymmetric two-qubit-cavity system
Alexandra Olaya-Castro, Neil F. Johnson, Luis Quiroga
We present an efficient scheme for the controlled generation of pure two-qubit states possessing {\em any} desired degree of entanglement and a {\em prescribed} symmetry in two cav…
Dynamics of quantum correlations and linear entropy in a multi-qubit-cavity system
Alexandra Olaya-Castro, Neil F. Johnson, Luis Quiroga
We present a theoretical study of the relationship between entanglement and entropy in multi-qubit quantum optical systems. Specifically we investigate quantitative relations betwe…