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7 papers · 2 filters
Quantitative complementarity in two-path interferometry
A. Bramon, G. Garbarino, B. C. Hiesmayr
The quantitative formulation of Bohr's complementarity proposed by Greenberger and Yasin is applied to some physical situations for which analytical expressions are available. This…
Polarization phase gate with a tripod atomic system
S. Rebic, D. Vitali, C. Ottaviani +4
We analyze the nonlinear optical response of a four-level atomic system driven into a tripod configuration. The large cross-Kerr nonlinearities that occurr in such a system are sho…
Berry phase in entangled systems: a proposed experiment with single neutrons
Reinhold A. Bertlmann, Katharina Durstberger, Yuji Hasegawa +1
The influence of the geometric phase, in particular the Berry phase, on an entangled spin-1/2 system is studied. We discuss in detail the case, where the geometric phase is generat…
Three level atom optics via the tunneling interaction
K. Eckert, M. Lewenstein, R. Corbalan +3
Three level atom optics (TLAO) is introduced as a simple, efficient and robust method to coherently manipulate and transport neutral atoms. The tunneling interaction among three tr…
Collective vs local measurements in qubit mixed state estimation
E. Bagan, M. Baig, R. Munoz-Tapia +1
We discuss the problem of estimating a general (mixed) qubit state. We give the optimal guess that can be inferred from any given set of measurements. For collective measurements a…
Quantum marking and quantum erasure for neutral kaons
A. Bramon, G. Garbarino, B. Hiesmayr
Entangled K0 anti-K0 pairs are shown to be suitable to discuss extensions and tests of Bohr's complementarity principle through the quantum marking and quantum erasure techniques s…