output
20082026
most citedQuantum repeaters: From quantum networks to the quantum internet

546 citations

Showing 2012 · quant-phShow all

8 papers · 2 filters

quant-ph2012★ 18 cited

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…

quant-ph2012★ 9 cited

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…

quant-ph2012★ 6 cited

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.…

quant-ph2012★ 9 cited

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…

quant-ph2012★ 16 cited

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…

quant-ph2012★ 4 cited

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…

quant-ph2012★ 13 cited

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…

quant-ph2012★ 20 cited

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…