622 citations · 2.6k across the 42 of their papers we have counts for
11 papers · 2 filters
Atomic quantum superposition state generation via optical probing
Anne E. B. Nielsen, Uffe V. Poulsen, Antonio Negretti +1
We analyze the performance of a protocol to prepare an atomic ensemble in a superposition of two macroscopically distinguishable states. The protocol relies on conditional measurem…
Complementarity of information sent via different bases
Shengjun Wu, Sixia Yu, Klaus Mølmer
We discuss quantitatively the complementarity of information transmitted by a quantum system prepared in a basis state in one out of several different mutually unbiased bases (MUBs…
Entropic uncertainty relation for mutually unbiased bases
Shengjun Wu, Sixia Yu, Klaus Mølmer
We derive new inequalities for the probabilities of projective measurements in mutually unbiased bases of a qudit system. These inequalities lead to wider ranges of validity and ti…
Quantum fluctuations in the image of a Bose gas
Antonio Negretti, Carsten Henkel, Klaus Molmer
We analyze the information content of density profiles for an ultracold Bose gas of atoms and extract resolution limits for observables contained in these images. Our starting poin…
The distribution of quantum fidelities
Line Hjortshoj Pedersen, Niels Martin Moller, Klaus Molmer
When applied to different input states, an imperfect quantum operation yields output states with varying fidelities, defined as the absolute square of their overlap with the desire…
A Wave Function approach to dissipative processes
Yvan Castin, Jean Dalibard, Klaus Molmer
Due to growing interest in quantum measurement, control and feedback, we reproduce a manuscript from 1992, presenting a simple physical and mathematical derivation of stochastic di…