Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Roberts, Brenden"'
We explore a deep connection between fracton order and product codes. In particular, we propose and analyze conditions on classical seed codes which lead to fracton order in the resulting quantum product codes. Depending on the properties of the inpu
Externí odkaz:
http://arxiv.org/abs/2312.08462
The Pancharatnam phase is a generalization of the Berry phase that applies to discrete sequences of quantum states. Here, we show that the Pancharatnam phase is a natural invariant for a wide class of quantum many-body dynamics involving measurements
Externí odkaz:
http://arxiv.org/abs/2312.04500
Autor:
Block, Maxwell, Ye, Bingtian, Roberts, Brenden, Chern, Sabrina, Wu, Weijie, Wang, Zilin, Pollet, Lode, Davis, Emily J., Halperin, Bertrand I., Yao, Norman Y.
Publikováno v:
Nature Physics 20, 1575-1581 (2024)
Spin squeezing is a form of entanglement that reshapes the quantum projection noise to improve measurement precision. Here, we provide numerical and analytic evidence for the following conjecture: any Hamiltonian exhibiting finite temperature, easy-p
Externí odkaz:
http://arxiv.org/abs/2301.09636
Autor:
Roberts, Brenden Carlisle
Several investigations are presented around the general topic of the ground state and low-energy behavior of models for many-body quantum physics in one dimension (1d). We develop a novel numerical method for the ground and low-energy sectors of loca
Autor:
Roberts, Brenden, Motrunich, Olexei I.
We study the antiferromagnetic XYZ spin chain with quenched bond randomness, focusing on a critical line between localized Ising magnetic phases. A previous calculation using the spectrum-bifurcation renormalization group, and assuming marginal many-
Externí odkaz:
http://arxiv.org/abs/2107.12937
Publikováno v:
Phys. Rev. B 103, 155143 (2021)
We continue recent efforts to discover examples of deconfined quantum criticality in one-dimensional models. In this work we investigate the transition between a $\mathbb{Z}_3$ ferromagnet and a phase with valence bond solid (VBS) order in a spin cha
Externí odkaz:
http://arxiv.org/abs/2010.07917
Publikováno v:
Phys. Rev. B 99, 165143 (2019)
We perform a numerical study of a spin-1/2 model with $\mathbb{Z}_2 \times \mathbb{Z}_2$ symmetry in one dimension which demonstrates an interesting similarity to the physics of two-dimensional deconfined quantum critical points (DQCP). Specifically,
Externí odkaz:
http://arxiv.org/abs/1904.00010
Akademický článek
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Publikováno v:
Phys. Rev. B 96, 214203 (2017)
The practical success of polynomial-time tensor network methods for computing ground states of certain quantum local Hamiltonians has recently been given a sound theoretical basis by Arad, Landau, Vazirani, and Vidick. The convergence proof, however,
Externí odkaz:
http://arxiv.org/abs/1703.01994
Publikováno v:
Phys. Rev. B 91, 094505 (2015)
Motivated by a recent experiment in which zero-bias peaks have been observed in scanning tunneling microscopy (STM) experiments performed on chains of magnetic atoms on a superconductor, we show, by generalizing earlier work, that a multichannel ferr
Externí odkaz:
http://arxiv.org/abs/1410.5412