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- Centre National de la Recherche ScientifiqueFR11 papers
- Foundation for Research and Technology HellasGR11 papers
- National Observatory of AthensGR10 papers
- University of ManchesterGB9 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR8 papers
- CEA Paris-SaclayFR7 papers
- European Organization for Nuclear ResearchCH7 papers
- National Technical University of AthensGR7 papers
- CY Cergy Paris UniversitéFR5 papers
- Imperial College LondonGB5 papers
- National and Kapodistrian University of AthensGR5 papers
- National Centre of Scientific Research "Demokritos"GR5 papers
8 papers · 1 filter
A new information metric and a possible higher bound for a class of measurements in the Quantum Estimation Problem
Demetris P. K. Ghikas, Fotios Oikonomou
Information metrics give lower bounds for the estimation of parameters. The Cencov-Morozova-Petz Theorem classifies the monotone quantum Fisher metrics. The optimum bound for the q…
Entangling and decohering influence of noisy perturbations. Stochastic anti-resonance in the time evolution of interacting qubits
Demetris P. K. Ghikas, Athanasios C. Tzemos
We study the entanglement evolution of two coupled qubits in interaction with an external environment and in the presence of an external magnetic field with a stochastic component.…
The quantum measurement approach to particle oscillations
C. Anastopoulos, N. Savvidou
The LSND and MiniBoone seeming anomalies in neutrino oscillations are usually attributed to physics beyond the Standard model. It is, however, possible that they may be an artefact…
The Rotating-Wave Approximation: Consistency and Applicability from an Open Quantum System Analysis
Chris Fleming, N. I. Cummings, Charis Anastopoulos +1
We provide an in-depth and thorough treatment of the validity of the rotating-wave approximation (RWA) in an open quantum system. We find that when it is introduced after tracing o…
Time-of-arrival probabilities and quantum measurements: III Decay of unstable states
Charis Anastopoulos
We study the decay of unstable states by formulating quantum tunneling as a time-of-arrival problem: we determine the detection probability for particles at a detector located a di…
Time-of-arrival probabilities and quantum measurements: II Application to tunneling times
Charis Anastopoulos, Ntina Savvidou
We formulate quantum tunneling as a time-of-arrival problem: we determine the detection probability for particles passing through a barrier at a detector located a distance L from…