111 citations · 394 across the 30 of their papers we have counts for
31 papers
Engineering interactions by collective coupling of atom pairs to cavity photons for entanglement generation
Sankalp Sharma, Jan Chwedeńczuk, Tomasz Wasak
Engineering atom-atom interactions is essential both for controlling novel phases of matter and for efficient preparation of many-body entangled states, which are key resources in…
Extracting Many-Body Quantum Resources within One-Body Reduced Density Matrix Functional Theory
Carlos L. Benavides-Riveros, Tomasz Wasak, Alessio Recati
Quantum Fisher information (QFI) is a central concept in quantum sciences used to quantify the ultimate precision limit of parameter estimation, detect quantum phase transitions, w…
Generation of scalable many-body Bell correlations in spin chains with short-range two-body interactions
Marcin Płodzień, Tomasz Wasak, Emilia Witkowska +2
Dynamical generation of strong and scalable quantum resources, like many-body entanglement and Bell correlations, in spin- chains, is possible with all-to-all interactions, ei…
Decoherence and momentum relaxation in Fermi-polaron Rabi dynamics: a kinetic equation approach
Tomasz Wasak, Matteo Sighinolfi, Johannes Lang +2
Despite the paradigmatic nature of the Fermi-polaron model, the theoretical description of its nonlinear dynamics poses challenges. Here, we apply a quantum kinetic theory of drive…
Fermi polaron laser in two-dimensional semiconductors
Tomasz Wasak, Falko Pientka, Francesco Piazza
We study the relaxation dynamics of driven, two-dimensional semiconductors, where itinerant electrons dress optically pumped excitons to form two Fermi-polaron branches. Repulsive…
Cooperatively-enhanced precision of hybrid light-matter sensors
A. Niezgoda, J. Chwedenczuk, T. Wasak +1
We consider a hybrid system of matter and light as a sensing device and quantify the role of cooperative effects. The latter generically enhance the precision with which modificati…
Quantum reactive scattering in the long-range ion-dipole potential
Tomasz Wasak, Zbigniew Idziaszek
An ion and a polar molecule interact by an anisotropic ion-dipole potential scaling as at large distances. Due to its long-range character, it modifies the proper…
Analytically solvable quasi-one-dimensional Kronig-Penney model
Marta Sroczyńska, Tomasz Wasak, Zbigniew Idziaszek
We generalize the textbook Kronig-Penney model to realistic conditions for a quantum-particle moving in the quasi-one-dimensional (quasi-1D) waveguide, where motion in the transver…
Quantum droplets in a dipolar Bose gas at a dimensional crossover
Pawel Zin, Maciej Pylak, Tomasz Wasak +2
We study the beyond-mean-field corrections to the energy of a dipolar Bose gas confined to two dimensions by a box potential with dipoles oriented in plane. At a critical strength…
Pair correlation of atoms scattered from colliding Bose-Einstein quasicondensates
Pawel Zin, Tomasz Wasak, Denis Boiron +1
A collision of Bose-Einstein condensates is a useful source of single nonclassically correlated pairs of atoms. Here, we consider elastic scattering of atoms from elongated clouds…
Multipartite-Entanglement Dynamics in Regular-to-Ergodic Transition: a Quantum-Fisher-Information approach
Karol Gietka, Jan Chwedeńczuk, Tomasz Wasak +1
The characterization of entanglement is a central problem for the study of quantum many-body dynamics. Here, we propose the quantum Fisher information as a useful tool for the stud…
A strong Bell correlation witness between spatially separated pairs of atoms
D. K. Shin, B. M. Henson, S. S. Hodgman +3
The violation of a Bell inequality is a striking demonstration of how quantum mechanics contradicts local realism. Although the original argument was presented with a pair of spin…
Quantum Bose-Bose droplets at a dimensional crossover
Paweł Ziń, Maciej Pylak, Tomasz Wasak +2
We study a liquid quantum droplets in a mixture of two-component Bose-Einstein condensates under a variable confinement introduced along one or two spatial dimensions. Despite the…
Magnetic-field gradiometer based on ultracold collisions
Tomasz Wasak, Krzysztof Jachymski, Tommaso Calarco +1
We present a detailed analysis of the usefulness of ultracold atomic collisions for sensing the strength of an external magnetic field as well as its spatial gradient. The core ide…
Quantum state engineering with a trapped atom and a set of static impurities
Marta Sroczyńska, Tomasz Wasak, Krzysztof Jachymski +2
Hybrid systems of ultracold atoms and trapped ions or Rydberg atoms can be useful for quantum simulation purposes. By tuning the geometric arrangement of the impurities it is possi…
Bell inequality, Einstein-Podolsky-Rosen steering and quantum metrology with spinor Bose-Einstein condensates
T. Wasak, J. Chwedenczuk
We propose an experiment, where the Bell inequality is violated in a many-body system of massive particles. The source of correlated atoms is a spinor Bose-Einstein condensat…
Single-atom transistor as a precise magnetic field sensor
Krzysztof Jachymski, Tomasz Wasak, Zbigniew Idziaszek +3
Feshbach resonances, which allow for tuning the interactions of ultracold atoms with an external magnetic field, have been widely used to control the properties of quantum gases. W…
Properties of atomic pairs produced in the collision of Bose-Einstein condensates
Pawel Zin, Tomasz Wasak
Collisions of Bose-Einstein condensates can be used as a mean to generate correlated pairs of atoms. The scattered massive particles, in analogy to photon pairs in quantum optics,…
Enhancing interferometric sensitivity by non-classical light from quantum non-demolition measurements in cavity QED
K. Gietka, T. Wasak, J. Chwedenczuk +2
We propose an enhanced optical interferometer based on tailored non-classical light generated by nonlinear dynamics and projective measurements in a three-level atom cavity QED sys…
Role of Particle Entanglement in the Violation of Bell Inequalities
T. Wasak, A. Smerzi, J. Chwedenczuk
Entanglement between two separate systems is a necessary resource to violate a Bell inequality in a test of local realism. We demonstrate that to overcome the Bell bound, this corr…
Quantum-enhanced interferometry and the structure of twisted states
K. Gietka, P. Szankowski, T. Wasak +1
Preparation of a non-classically correlated state is the first step of any quantum-enhanced interferometric protocol. An efficient method is the one-axis twisting, which entangles…
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…
Stabilization of solitons under competing nonlinearities by external potentials
Krzysztof B. Zegadlo, Tomasz Wasak, Boris A. Malomed +2
We report results of the analysis for families of one-dimensional (1D) trapped solitons, created by competing self-focusing (SF) quintic and self-defocusing (SDF) cubic nonlinear t…
Simple model of Feshbach resonance in the strong-coupling regime
T. Wasak, M. Krych, Z. Idziaszek +3
We use the dressed potentials obtained in the adiabatic representation of two coupled channels to calculate s-wave Feshbach resonances in a 3D spherically symmetric potential with…