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7 papers · 2 filters
Symmetric extension in two-way quantum key distribution
Geir Ove Myhr, Joseph M. Renes, Andrew C. Doherty +1
We introduce symmetric extensions of bipartite quantum states as a tool for analyzing protocols that distill secret key from quantum correlations. Whether the correlations are comi…
Coherent Patterning of Matter Waves with Subwavelength Localization
J. Mompart, V. Ahufinger, G. Birkl
We propose the Subwavelength Localization via Adiabatic Passage (SLAP) technique to coherently achieve state-selective patterning of matter waves well beyond the diffraction limit.…
Manipulating sudden death of entanglement of two-qubit X-states in thermal reservoirs
Mazhar Ali, G. Alber, A. R. P. Rau
Manipulation of sudden death of entanglement (ESD) of two qubits interacting with statistically uncorrelated thermal reservoirs is investigated. It is shown that for initially prep…
Locality, detection efficiencies, and probability polytopes
J. Wilms, Y. Disser, G. Alber +1
We present a detailed investigation of minimum detection efficiencies, below which locality cannot be violated by any quantum system of any dimension in bipartite Bell experiments.…
Perfect excitation of a matter qubit by a single photon in free space
Magdalena Stobińska, Gernot Alber, Gerd Leuchs
We propose a scheme for perfect excitation of a single two-level atom by a single photon in free space. The photon state has to match the time reversed photon state originating fro…
Conjectured Strong Complementary Information Tradeoff
Joseph M. Renes, Jean-Christian Boileau
We conjecture a new entropic uncertainty principle governing the entropy of complementary observations made on a system given side information in the form of quantum states, genera…