3 papers
quant-ph2025
Persistent oscillation of a Cooper-pair condensate of topological defects in a nonintegrable quantum Ising chain
Francis A. Bayocboc, Jacek Dziarmaga, Marek M. Rams +1
We identify persistent oscillations in a nonintegrable quantum Ising chain. In the integrable chain with nearest-neighbor interactions, the nature, origin, and decay of post-transi…
quant-ph2025
Inhomogeneous adiabatic preparation of a quantum critical ground state in two dimensions
Ihor Sokolov, Francis A. Bayocboc, Marek M. Rams +1
Adiabatic preparation of a critical ground state is hampered by the closing of its energy gap as the system size increases. However, this gap is directly relevant only for a unifor…
quant-ph2024
Bang-bang preparation of quantum many-body ground states in two dimensions: optimization of the algorithm with a two-dimensional tensor network
Yintai Zhang, Jacek Dziarmaga
A bang-bang (BB) algorithm prepares the ground state of a two-dimensional (2D) quantum many-body Hamiltonian by evolving an initial product state alternating between $H…