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Quantum simulation of open-system dynamical maps with trapped ions
P. Schindler, M. Müller, D. Nigg +7
Dynamical maps describe general transformations of the state of a physical system, and their iteration can be interpreted as generating a discrete time evolution. Prime examples in…
Undoing a quantum measurement
Philipp Schindler, Thomas Monz, Daniel Nigg +6
In general, a quantum measurement yields an undetermined answer and alters the system to be consistent with the measurement result. This process maps multiple initial states into a…
Can different quantum state vectors correspond to the same physical state? An experimental test
Daniel Nigg, Thomas Monz, Philipp Schindler +7
A century on from the development of quantum theory, the interpretation of a quantum state is still discussed. If a physicist claims to have produced a system with a particular wav…
Atom-atom entanglement by single-photon detection
L. Slodička, G. Hétet, N. Röck +3
A scheme for entangling distant atoms is realized, as proposed in the seminal paper by Cabrillo et al. [Phys. Rev. A 59, 1025 (1999)]. The protocol is based on quantum interference…
Experimental characterization of quantum dynamics through many-body interactions
Daniel Nigg, Julio T. Barreiro, Philipp Schindler +5
We report on the implementation of a quantum process tomography (QPT) technique known as direct characterization of quantum dynamics (DCQD) applied on coherent and incoherent singl…
Certifying experimental errors in quantum experiments
Tobias Moroder, Matthias Kleinmann, Philipp Schindler +3
When experimental errors are ignored in an experiment, the subsequent analysis of its results becomes questionable. We develop tests to detect systematic errors in quantum experime…