5 papers
Noise representations of open system dynamics
Piotr Szańkowski, Łukasz Cywiński
We analyze the conditions under which the dynamics of a quantum system open to a given environment can be simulated with an external noisy field that is a surrogate for the environ…
Four-wave mixing in spin-orbit coupled Bose-Einstein condensates
Nguyen Viet Hung, Piotr Szankowski, Vladimir V. Konotop +1
We describe possibilities of spontaneous, degenerate four-wave mixing (FWM) processes in spin-orbit coupled Bose-Einstein condensates. Phase matching conditions (i.e., energy and m…
The dynamical-decoupling-based spatiotemporal noise spectroscopy
Jan Krzywda, Piotr Szańkowski, Łukasz Cywiński
Here we demonstrate how the standard, temporal-only, dynamical-decoupling-based noise spectroscopy method can be extended to also encompass the spatial degree of freedom. This spat…
Criteria for particle entanglement in many-body systems of bosons
T. Wasak, P. Szankowski, M. Trippenbach +1
Basing on the analogy between the coherent states of light and separable states of bosons, we demonstrate that the violation Cauchy-Schwarz inequality for any-order correlation…
Quantum coherence and correlations in cold atom systems
Piotr Szańkowski
Although the foundations of quantum and classical physics are much different, it is often difficult to pinpoint which features of a particular system are intrinsically "quantum". P…