Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Colmenarez, Luis"'
The realization of large-scale quantum computers requires not only quantum error correction (QEC) but also fault-tolerant operations to handle errors that propagate into harmful errors. Recently, flag-based protocols have been introduced that use anc
Externí odkaz:
http://arxiv.org/abs/2402.17761
Quantum error correcting (QEC) codes protect quantum information from decoherence, as long as error rates fall below critical error thresholds. In general, obtaining thresholds implies simulating the QEC procedure using, in general, sub-optimal decod
Externí odkaz:
http://arxiv.org/abs/2312.06664
Autor:
Hahn, Dominik, Colmenarez, Luis
Publikováno v:
Physical Review B 109, 094207 (2024)
We present a family of Floquet circuits that can interpolate between non-interacting qubits, free propagation, generic interacting, and dual-unitary dynamics. We identify the operator entanglement entropy of the two-qubit gate as a good quantitative
Externí odkaz:
http://arxiv.org/abs/2311.02197
Publikováno v:
Phys. Rev. B 109, L081117 (2024)
We investigate the effect of ergodic inclusions in putative many-body localized systems. To this end, we consider the random field Heisenberg chain, which is many-body localized at strong disorder and we couple it to an ergodic bubble, modeled by a r
Externí odkaz:
http://arxiv.org/abs/2308.01350
Autor:
Hong, Cheng-Lin, Colmenarez, Luis, Ding, Lexin, Benavides-Riveros, Carlos L., Schilling, Christian
The weighted subspace-search variational quantum eigensolver (SSVQE) is a prominent algorithm for calculating excited-state properties of molecular quantum systems. In this work, we elaborate on some of its fundamental features with the aim of improv
Externí odkaz:
http://arxiv.org/abs/2306.11844
Publikováno v:
Phys. Rev. B105, 174207 (2022)
The scaling of the Thouless time with system size is of fundamental importance to characterize dynamical properties in quantum systems. In this work, we study the scaling of the Thouless time in the Anderson model on random regular graphs with on-sit
Externí odkaz:
http://arxiv.org/abs/2201.04673
Publikováno v:
Phys. Rev. B 105, 174205 (2022)
We numerically study both the avalanche instability and many-body resonances in strongly-disordered spin chains exhibiting many-body localization (MBL). We distinguish between a finite-size/time MBL regime, and the asymptotic MBL phase, and identify
Externí odkaz:
http://arxiv.org/abs/2107.05642
Autor:
Colmenarez, Luis, Luitz, David J.
Publikováno v:
Phys. Rev. Research 2, 043047 (2020)
Lieb Robinson bounds quantify the maximal speed of information spreading in nonrelativistic quantum systems. We discuss the relation of Lieb Robinson bounds to out of time order correlators, which correspond to different norms of commutators $C(r,t)
Externí odkaz:
http://arxiv.org/abs/2005.10257
Publikováno v:
Phys. Rev. B 99, 085411 (2019)
We introduce a $p_{z}-d$ coupling model Hamiltonian for the $\pi$-graphene/Au bands that predicts a rather large intrinsic spin-orbit (SO) coupling as are being reported in recent experiments and DFT studies. Working within the analytical Slater-Kost
Externí odkaz:
http://arxiv.org/abs/1910.01110
Publikováno v:
SciPost Phys. 7, 064 (2019)
Ergodic quantum many-body systems satisfy the eigenstate thermalization hypothesis (ETH). However, strong disorder can destroy ergodicity through many-body localization (MBL) -- at least in one dimensional systems -- leading to a clear signal of the
Externí odkaz:
http://arxiv.org/abs/1906.10701