546 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP98 papers
- Centre National de la Recherche ScientifiqueFR85 papers
- The University of OsakaJP47 papers
- RIKENJP46 papers
- University College CorkIE46 papers
- Kyoto UniversityJP34 papers
- Nagoya UniversityJP34 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR29 papers
- Hiroshima UniversityJP28 papers
- Institute of Space and Astronautical ScienceJP28 papers
- Japan Aerospace Exploration AgencyJP27 papers
- Tohoku UniversityJP27 papers
8 papers · 2 filters
Disorder induced localization and enhancement of entanglement in one- and two-dimensional quantum walks
C. M. Chandrashekar
The time evolution of one- and two-dimensional discrete-time quantum walk with increase in disorder is studied. We use spatial, temporal and spatio-temporal broken periodicity of t…
Noise-enhanced quantum transport on a closed loop using quantum walks
C. M. Chandrashekar, Th. Busch
We study the effect of noise on the transport of a quantum state from a closed loop of sites with one of the sites as a sink. Using a discrete-time quantum walk dynamics, we de…
Decoherence-assisted transport and quantum criticalities
Gian Luca Giorgi, Thomas Busch
We study the dynamics of a two-level quantum system interacting with an external environment that takes the form of an XY spin chain in the presence of an external magnetic field.…
Enhancement of Geometric Phase by Frustration of Decoherence: A Parrondo like Effect
Subhashish Banerjee, C. M. Chandrashekar, Arun K. Pati
Geometric phase plays an important role in evolution of pure or mixed quantum states. However, when a system undergoes decoherence the development of geometric phase may be inhibit…
Predominance of entanglement of formation over quantum discord under quantum channels
Steve Campbell
We present a study of the behavior of two different figures of merit for quantum correlations, entanglement of formation and quantum discord, under quantum channels showing how the…
Genuine correlations in finite-size spin systems
Gian Luca Giorgi, Thomas Busch
Genuine multipartite correlations in finite-size XY chains are studied as a function of the applied external magnetic field. We find that, for low temperatures, multipartite correl…
Decoherence on a two-dimensional quantum walk using four- and two-state particle
C. M. Chandrashekar, Th. Busch
We study the decoherence effects originating from state flipping and depolarization for two-dimensional discrete-time quantum walks using four-state and two-state particles. By qua…
Critical assessment of two-qubit post-Markovian master equations
S. Campbell, A. Smirne, L. Mazzola +4
A post-Markovian master equation has been recently proposed as a tool to describe the evolution of a system coupled to a memory-keeping environment [A. Shabani and D. A. Lidar, Phy…