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Qubism: self-similar visualization of many-body wavefunctions
Javier Rodriguez-Laguna, Piotr Migdał, Miguel Ibáñez Berganza +2
A visualization scheme for quantum many-body wavefunctions is described, which we have termed qubism. Its main property is its recursivity: increasing the number of qubits reflects…
Particle Counting Statistics of Time and Space Dependent Fields
Sibylle Braungardt, Mirta Rodríguez, Roy J. Glauber +1
The counting statistics give insight into the properties of quantum states of light and other quantum states of matter such as ultracold atoms or electrons. The theoretical descrip…
Can One Trust Quantum Simulators?
Philipp Hauke, Fernando M. Cucchietti, Luca Tagliacozzo +2
Various fundamental phenomena of strongly-correlated quantum systems such as high- superconductivity, the fractional quantum-Hall effect, and quark confinement are still await…
Distribution of entanglement in networks of bi-partite full-rank mixed states
G. J. Lapeyre, S. Perseguers, M. Lewenstein +1
We study quantum entanglement distribution on networks with full-rank bi-partite mixed states linking qubits on nodes. In particular, we use entanglement swapping and purification…
Optimal decomposable witnesses without the spanning property
Remigiusz Augusiak, Gniewomir Sarbicki, Maciej Lewenstein
One of the unsolved problems in the characterization of the optimal entanglement witnesses is the existence of optimal witnesses acting on bipartite Hilbert spaces H_{m,n}=C^m\otim…
Quantum Memory Assisted Probing of Dynamical Spin Correlations
O. Romero-Isart, M. Rizzi, C. A. Muschik +3
We propose a method to probe time dependent correlations of non trivial observables in many-body ultracold lattice gases. The scheme uses a quantum non-demolition matter-light inte…
Atom Counting in Expanding Ultracold Clouds
Sibylle Braungardt, Mirta Rodríguez, Aditi Sen De +2
We study the counting statistics of ultracold bosonic atoms that are released from an optical lattice. We show that the counting probability distribution of the atoms collected at…