45 citations · 203 across the 11 of their papers we have counts for
12 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…
The dynamics of two entangled qubits exposed to classical noise: role of spatial and temporal noise correlations
P. Szańkowski, M. Trippenbach, Ł. Cywiński +1
We investigate the decay of two-qubit entanglement caused by the influence of classical noise. We consider the whole spectrum of cases ranging from independent to fully correlated…
A class of compact entities in three component Bose - Einstein condensates
Piotr Szankowski, Marek Trippenbach, Eryk Infeld
We introduce a new class of soliton-like entities in spinor three component BECs. These entities generalize well known solitons. For special values of coupling constants, the syste…
Bogoliubov theory for atom scattering into separate regions
T. Wasak, P. Szankowski, R. Bücker +2
We review the Bogoliubov theory in the context of recent experiments, where atoms are scattered from a Bose-Einstein Condensate into two well-separated regions. We find the full dy…
Spin decoherence due to Fluctuating Fields
Piotr Szańkowski, M. Trippenbach, Y. B. Band
The dynamics of a spin in the presence of a deterministic and a fluctuating magnetic field is solved for analytically to obtain the averaged value of the spin as a function of time…
An extended representation of three spin component Bose Einstein Condensate solitons
Piotr Szankowski, Marek Trippenbach, Eryk Infeld
We consider a three spin component Bose Einstein Condensate as described by as many coupled nonlinear Schroedinger equations. For a very special ratio of the coupling constants, ex…
Entanglement-based signature of nonlocal dispersion cancellation
Tomasz Wasak, Piotr Szankowski, Wojciech Wasilewski +1
We derive an inequality bounding the strength of temporal correlations for a pair of light beams prepared in a separable state and propagating through dispersive media with opposit…
Oscillating solitons in a three component BEC
Piotr Szankowski, Eryk Infeld, Marek Trippenbach +1
We investigate the properties of three component BEC systems with spin exchange interactions. We consider different coupling constants from those leading to exact solutions known i…