53 citations · 491 across the 36 of their papers we have counts for
12 papers · 1 filter
Fock State Sampling Method -- Characteristic temperature of maximal fluctuations for interacting bosons in box potentials
M. B. Kruk, T. Vibel, J. Arlt +3
We study the statistical properties of a gas of interacting bosons trapped in a box potential in two and three dimensions. Our primary focus is the characteristic temperature $\tch…
Microcanonical and Canonical Fluctuations in Bose-Einstein Condensates -- Fock state sampling approach
Maciej Bartłomiej Kruk, Dawid Hryniuk, Mick Kristensen +4
The fluctuations of the atom number between a Bose-Einstein condensate and the surrounding thermal gas have been the subject of a long standing theoretical debate. This discussion…
Quantum correlations protection through spin self-rephasing in 1-D Bose gas
Konrad Szymański, Krzysztof Pawłowski
System consisting of a number of trapped atoms evolving under the influence of external inhomogenous magnetic field undergoes spin dephasing: classically, since each atom feels dif…
Many-body effects in quantum metrology
Jan Czajkowski, Krzysztof Pawłowski, Rafał Demkowicz-Dobrzański
We study the impact of many-body effects on the fundamental precision limits in quantum metrology. On the one hand such effects may lead to non-linear Hamiltonians, studied in the…
On the Dissipative Version of the Gross--Pitaevski Equation
K. Pawłowski, Ł. A. Turski
We propose a novel version of the dissipative Gross--Pitaevski equation and examine its properties. In contrast to previous proposals our approach, based on the metriplectic formul…
Many-body soliton-like states of the bosonic ideal gas
Rafał Ołdziejewski, Wojciech Górecki, Krzysztof Pawłowski +1
We study the lowest energy states for fixed total momentum, i.e. yrast states, of bosons moving on a ring. As in the paper of A. Syrwid and K. Sacha \cite{syrwid2015} , we comp…
Evolution of entanglement under an Ising-like Hamiltonian with particle losses
Konrad Szymański, Krzysztof Pawłowski
We present analytical compact solution for the density matrix and correlation functions of two collective-macroscopic spins evolving via Ising-like Hamiltonian in the presence of p…
EPR-entangled Bose-Einstein condensates in state-dependent potentials: a dynamical study
Hadrien Kurkjian, Krzysztof Pawlowski, Alice Sinatra
We study generation of non-local correlations by atomic interactions in a pair of bi-modal Bose-Einstein Condensates in state-dependent potentials including spatial dynamics. The w…
Limits of atomic entanglement by cavity-feedback : from weak to strong coupling
Krzysztof Pawlowski, Jérôme Estève, Jakob Reichel +1
We theoretically investigate the entangled states of an atomic ensemble that can be obtained via cavity-feedback, varying the atom-light coupling from weak to strong, and including…
Macroscopic superpositions in Bose-Josephson junctions: Controlling decoherence due to atom losses
Krzysztof Pawlowski, Dominique Spehner, Anna Minguzzi +1
We study how macroscopic superpositions of coherent states produced by the nondissipative dynamics of binary mixtures of ultracold atoms are affected by atom losses. We identify di…
Quasicondensation reexamined
Przemyslaw Bienias, Krzysztof Pawlowski, Mariusz Gajda +1
We study in detail the effect of quasicondensation. We show that this effect is strictly related to dimensionality of the system. It is present in one dimensional systems independe…
Statistical properties of one dimensional Bose gas
Przemyslaw Bienias, Krzysztof Pawlowski, Mariusz Gajda +1
Monte Carlo method within, so called, classical fields approximation is applied to one dimensional weakly interacting repulsive Bose gas trapped in a harmonic potential. Equilibriu…