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6 papers · 2 filters
Creating a low-dimensional quantum gas using dark states in an inelastic evanescent-wave mirror
R. J. C. Spreeuw, D. Voigt, B. T. Wolschrijn +1
We discuss an experimental scheme to create a low-dimensional gas of ultracold atoms, based on inelastic bouncing on an evanescent-wave mirror. Close to the turning point of the mi…
Observation of radiation pressure exerted by evanescent waves
D. Voigt, B. T. Wolschrijn, R. Jansen +3
We report a direct observation of radiation pressure, exerted on cold rubidium atoms while bouncing on an evanescent-wave atom mirror. We analyze the radiation pressure by imaging…
Three Approaches to the Quantitative Definition of Information in an Individual Pure Quantum State
Paul Vitanyi
In analogy of classical Kolmogorov complexity we develop a theory of the algorithmic information in bits contained in any one of continuously many pure quantum states: quantum Kolm…
Average-Case Quantum Query Complexity
Andris Ambainis, Ronald de Wolf
We compare classical and quantum query complexities of total Boolean functions. It is known that for worst-case complexity, the gap between quantum and classical can be at most pol…
Optimal Decompositions of Barely Separable States
David P. DiVincenzo, Barbara M. Terhal, Ashish V. Thapliyal
Two families of bipartite mixed quantum states are studied for which it is proved that the number of members in the optimal-decomposition ensemble --- the ensemble realizing the en…
The magnetic field generated by an electron bound in angular-momentum eigenstates
K. Ayuel, P. F. de Chatel
The magnetic field generated by an electron bound in a spherically symmetric potential is calculated for eigenstates of the orbital and total angular momentum. General expressions…