65 citations · 141 across the 10 of their papers we have counts for
10 papers
Spinor Bose-Einstein condensate as an analog simulator of molecular bending vibrations
Ayaka Usui, Artur Niezgoda, Manuel Gessner
We demonstrate that spinor Bose-Einstein condensates (BECs) can be operated as an analog simulator of the two-dimensional vibron model. This algebraic model describes bending vibra…
Exploring spin-squeezing in the Mott insulating regime: role of anisotropy, inhomogeneity and hole doping
Tanausú Hernández Yanes, Artur Niezgoda, Emilia Witkowska
Spin-squeezing in systems with single-particle control is a well-established resource of modern quantum technology. Applied in an optical lattice clock can reduce the statistical u…
Critical quantum thermometry and its feasibility in spin systems
Enes Aybar, Artur Niezgoda, Safoura S. Mirkhalaf +3
In this work, we study temperature sensing with finite-sized strongly correlated systems exhibiting quantum phase transitions. We use the quantum Fisher information (QFI) approach…
Many-body nonlocality as a resource for quantum-enhanced metrology
Artur Niezgoda, Jan Chwedenczuk
We demonstrate that a many-body nonlocality is a resource for ultra-precise metrology. This result is achieved by linking the sensitivity of a quantum sensor with a combination of…
Twist-and-store entanglement in bimodal and spin-1 Bose-Einstein condensates
Artur Niezgoda, Emilia Witkowska, Safoura Sadat Mirkhalaf
A scheme for dynamical stabilization of entanglement quantified by the quantum Fisher information is analyzed numerically and analytically for bimodal and spin-1 Bose-Einstein cond…
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…
Characterizing quantum correlations in spin chains
Artur Niezgoda, Miłosz Panfil, Jan Chwedeńczuk
The growth in the demand for precisely crafted many-body systems of spin- particles/qubits is due to their top-notch versatility in application-oriented quantum-enhanced proto…
Detection of Bell correlations at finite temperature from matter-wave interference fringes
A. Niezgoda, J. Chwedenczuk, L. Pezze +1
We show that matter-wave interference fringes formed by two overlapping atomic clouds can yield information about the non-local Bell correlations. To this end, we consider a simple…
Optimal atomic interferometry robust to detection noise using spin-1 atomic condensates
Artur Niezgoda, Dariusz Kajtoch, Joanna Dziekańska +1
Implementation of the quantum interferometry concept to spin-1 atomic Bose-Einstein condensates is analyzed by employing a polar state evolved in time. In order to identify the bes…
Efficient two-mode interferometers with spinor Bose-Einstein condensates
Artur Niezgoda, Dariusz Kajtoch, Emilia Witkowska
We consider general three-mode interferometers using a spin-1 atomic Bose-Einstein condensate with macroscopic magnetization. We show that these interferometers, combined with the…