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8 papers · 2 filters
Quantum Probability from Subjective Likelihood: improving on Deutsch's proof of the probability rule
David Wallace
I present a proof of the quantum probability rule from decision-theoretic assumptions, in the context of the Everett interpretation. The basic ideas behind the proof are those pres…
Preparing high purity initial states for nuclear magnetic resonance quantum computing
M. S. Anwar, D. Blazina, H. Carteret +5
Here we demonstrate how para-hydrogen can be used to prepare a two-spin system in an almost pure state which is suitable for implementing nuclear magnetic resonance (NMR) quantum c…
Anticrossings in Foerster Coupled Quantum Dots
Ahsan Nazir, Brendon Lovett, Sean Barrett +2
We consider two coupled generic quantum dots, each modelled by a simple potential which allows the derivation of an analytical expression for the inter-dot Foerster coupling, in th…
Entanglement Detection Based on Interference and Particle Counting
Geza Toth, Christoph Simon, Juan Ignacio Cirac
A sufficient condition for entanglement in two-mode continuous systems is constructed based on interference visibility and the uncertainty of the total particle number. The observa…
Quantum Limits of Stochastic Cooling of a Bosonic Gas
D. Ivanov, S. Wallentowitz, I. A. Walmsley
The quantum limits of stochastic cooling of trapped atoms are studied. The energy subtraction due to the applied feedback is shown to contain an additional noise term due to atom-n…
Direct estimation of functionals of density operators by local operations and classical communication
Carolina Moura Alves, Pawel Horodecki, Daniel K. L. Oi +2
We present a method of determining important properties of a shared bipartite quantum state, within the ``distant labs'' paradigm, using \emph{only} local operations and classical…