Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Wellnitz, David"'
Autor:
Wellnitz, David, Domínguez-Castro, Gustavo A., Bilitewski, Thomas, Aidelsburger, Monika, Rey, Ana Maria, Santos, Luis
We investigate the quantum many-body dynamics of bosonic atoms hopping in a two-leg ladder with strong on-site contact interactions. We observe that when the atoms are prepared in a staggered pattern with pairs of atoms on every other rung, singlon d
Externí odkaz:
http://arxiv.org/abs/2409.05109
Autor:
Picard, Lewis R. B., Park, Annie J., Patenotte, Gabriel E., Gebretsadkan, Samuel, Wellnitz, David, Rey, Ana Maria, Ni, Kang-Kuen
Quantum computation (QC) and simulation rely on long-lived qubits with controllable interactions. Early work in quantum computing made use of molecules because of their readily available intramolecular nuclear spin coupling and chemical shifts, along
Externí odkaz:
http://arxiv.org/abs/2406.15345
Autor:
Carroll, Annette N., Hirzler, Henrik, Miller, Calder, Wellnitz, David, Muleady, Sean R., Lin, Junyu, Zamarski, Krzysztof P., Wang, Reuben R. W., Bohn, John L., Rey, Ana Maria, Ye, Jun
Long-range and anisotropic dipolar interactions profoundly modify the dynamics of particles hopping in a periodic lattice potential. Here, we report the realization of a generalized t-J model with dipolar interactions using a system of ultracold ferm
Externí odkaz:
http://arxiv.org/abs/2404.18916
Ultracold dipolar particles pinned in optical lattices or tweezers provide an excellent platform for studying out-of-equilibrium quantum magnetism with dipole-mediated couplings. Starting with an initial state with spins of opposite orientation in ea
Externí odkaz:
http://arxiv.org/abs/2311.18091
Autor:
Young, Dylan J., Chu, Anjun, Song, Eric Yilun, Barberena, Diego, Wellnitz, David, Niu, Zhijing, Schäfer, Vera M., Lewis-Swan, Robert J., Rey, Ana Maria, Thompson, James K.
Publikováno v:
Nature 625, 679-684 (2024)
In conventional Bardeen-Cooper-Schrieffer (BCS) superconductors, electrons with opposite momenta bind into Cooper pairs due to an attractive interaction mediated by phonons in the material. While superconductivity naturally emerges at thermal equilib
Externí odkaz:
http://arxiv.org/abs/2306.00066
Publikováno v:
Phys. Rev. A 108, 012616 (2023)
The dynamics of one-dimensional quantum many-body systems is often numerically simulated with matrix-product states (MPSs). The computational complexity of MPS methods is known to be related to the growth of entropies of reduced density matrices for
Externí odkaz:
http://arxiv.org/abs/2303.09426
Publikováno v:
Phys. Rev. A 108, 013313 (2023)
We study the temporal growth and spatial propagation of quantum correlations in a two-dimensional bilayer realising a spin-1/2 quantum XXZ model with couplings mediated by long-range and anisotropic dipolar interactions. Starting with an initial stat
Externí odkaz:
http://arxiv.org/abs/2302.09059
Publikováno v:
Phys. Rev. Research 6, L012025 (2024)
Entangled spin squeezed states generated via dipolar interactions in lattice models provide unique opportunities for quantum enhanced sensing and are now within reach of current experiments. A critical question in this context is which parameter regi
Externí odkaz:
http://arxiv.org/abs/2212.10470
Autor:
Wellnitz, David, Kekić, Armin, Heiss, Julian, Gertz, Michael, Weidemüller, Matthias, Spitz, Andreas
Network science provides a universal framework for modeling complex systems, contrasting the reductionist approach generally adopted in physics. In a prototypical study, we utilize network models created from spectroscopic data of atoms to predict mi
Externí odkaz:
http://arxiv.org/abs/2202.04342
Autor:
Wellnitz, David, Preisser, Guillermo, Alba, Vincenzo, Dubail, Jerome, Schachenmayer, Johannes
Publikováno v:
Phys. Rev. Lett. 129, 170401 (2022)
The operator space entanglement entropy, or simply 'operator entanglement' (OE), is an indicator of the complexity of quantum operators and of their approximability by Matrix Product Operators (MPO). We study the OE of the density matrix of 1D many-b
Externí odkaz:
http://arxiv.org/abs/2201.05099