212 citations · 694 across the 21 of their papers we have counts for
21 papers
Large anomalous shifts of potassium-39 Feshbach resonances
Ali Zaheer, Mohammed Bouras, Krzysztof Giergiel +3
We report the observation of large anomalous shifts, up to +7.5 G, of the positions of the 33.6 G and 39.9 G Feshbach resonances in potassium-39 atoms confined in a 1063.9 nm optic…
Quantum-Coherent Regime of Programmable Dipolar Spin Ice
Krzysztof Giergiel, Piotr Surówka
Frustrated spin-ice systems support emergent gauge fields and fractionalized quasiparticles that act as magnetic monopoles. Although artificial platforms have enabled their direct…
Hybrid Quantum-Classical Scheduling with Problem-Aware Calibration on a Quantum Annealer
Krzysztof Giergiel, Y. Sam Yang, Anthony B. Murphy
We evaluate the application of quantum annealing (QA) to a real-world combinatorial optimisation problem-room scheduling for sports camps at the Australian Institute of Sport-using…
Topologically protected quantized changes of the distance between atoms
Ali Emami Kopaei, Krzysztof Giergiel, Krzysztof Sacha
Thouless pumping enables the transport of particles in a one-dimensional periodic potential if the potential is slowly and periodically modulated in time. The change in the positio…
Time-tronics: from temporal printed circuit board to quantum computer
Krzysztof Giergiel, Peter Hannaford, Krzysztof Sacha
Time crystalline structures can be created in periodically driven systems. They are temporal lattices which can reveal different condensed matter behaviours ranging from Anderson l…
Discrete Time Crystals with Absolute Stability
Krzysztof Giergiel, Jia Wang, Bryan J. Dalton +2
We show that interacting bosons on a ring which are driven periodically by a rotating potential can support discrete time crystals whose absolute stability can be proven. The absol…
Topological Molecules and Topological Localization of a Rydberg Electron on a Classical Orbit
Ali Emami Kopaei, Xuedong Tian, Krzysztof Giergiel +1
It is common knowledge that atoms can form molecules if they attract each other. Here, we show that it is possible to create molecules where bound states of the atoms are not the r…
Bose-Hubbard realization of fracton defects
Krzysztof Giergiel, Ruben Lier, Piotr Surówka +1
Bose-Hubbard models are simple paradigmatic lattice models used to study dynamics and phases of quantum bosonic matter. We combine the extended Bose-Hubbard model in the hard-core…
Inseparable time-crystal geometries on the Möbius strip
Krzysztof Giergiel, Arkadiusz Kuroś, Arkadiusz Kosior +1
Description of periodically and resonantly driven quantum systems can lead to solid state models where condensed matter phenomena can be investigated in time lattices formed by per…
Anderson Molecules
Paweł Matus, Krzysztof Giergiel, Krzysztof Sacha
Atoms can form molecules if they attract each other. Here, we show that atoms are also able to form bound states not due to the attractive interaction but because of destructive in…
Phase diagram and optimal control for n-tupling discrete time crystal
Arkadiusz Kuroś, Rick Mukherjee, Weronika Golletz +4
A remarkable consequence of spontaneously breaking the time translational symmetry in a system, is the emergence of time crystals. In periodically driven systems, discrete time cry…
Creating big time crystals with ultracold atoms
Krzysztof Giergiel, Tien Tran, Ali Zaheer +4
We investigate the size of discrete time crystals s (ratio of response period to driving period) that can be created for a Bose-Einstein condensate (BEC) bouncing resonantly on an…
Symphony on Strong Field Approximation
Kasra Amini, Jens Biegert, Francesca Calegari +22
This paper has been prepared by the Symphony collaboration (University of Warsaw, Uniwersytet Jagielloński, DESY/CNR and ICFO) on the occasion of the 25th anniversary of the "simpl…
Discrete Time Quasi-Crystals
Krzysztof Giergiel, Arkadiusz Kuroś, Krzysztof Sacha
Between space crystals and amorphous materials there exists a third class of aperiodic structures which lack translational symmetry but reveal long-range order. They are dubbed qua…
Time crystals: analysis of experimental conditions
Krzysztof Giergiel, Arkadiusz Kosior, Peter Hannaford +1
Time crystals are quantum many-body systems which are able to self-organize their motion in a periodic way in time. Discrete time crystals have been experimentally demonstrated in…
Topological Time Crystals
K. Giergiel, A. Dauphin, M. Lewenstein +2
By analogy with the formation of space crystals, crystalline structures can also appear in the time domain. While in the case of space crystals we often ask about periodic arrangem…
Time crystal platform: from quasi-crystal structures in time to systems with exotic interactions
Krzysztof Giergiel, Artur Miroszewski, Krzysztof Sacha
Time crystals are quantum many-body systems which, due to interactions between particles, are able to spontaneously self-organize their motion in a periodic way in time by analogy…
Many-body localization caused by temporal disorder
Marcin Mierzejewski, Krzysztof Giergiel, Krzysztof Sacha
The many-body localization (MBL) is commonly related to a strong spatial disorder. We show that MBL may alternatively be generated by adding a temporal disorder to periodically dri…
Anderson localization of a Rydberg electron along a classical orbit
Krzysztof Giergiel, Krzysztof Sacha
Anderson localization is related to exponential localization of a particle in the configuration space in the presence of a disorder potential. Anderson localization can be also obs…
Determination of the map of efficiency of the J-PET detector with the GATE package
P. Kowalski, L. Raczyński, T. Bednarski +27
A novel PET detector consisting of strips of polymer scintillators is being developed by the J-PET Collaboration. The map of efficiency and the map of geometrical acceptance of the…
Calibration of photomultipliers gain used in the J-PET detector
T. Bednarski, E. Czerwiński, P. Moskal +27
Photomultipliers are commonly used in commercial PET scanner as devices which convert light produced in scintillator by gamma quanta from positron-electron annihilation into electr…