¡Nos trasladamos! E-Prints cerrará el 7 de junio.

En las próximas semanas vamos a migrar nuestro repositorio a una nueva plataforma con muchas funcionalidades nuevas. En esta migración las fechas clave del proceso son las siguientes:

Es muy importante que cualquier depósito se realice en E-Prints Complutense antes del 7 de junio. En caso de urgencia para realizar un depósito, se puede comunicar a docta@ucm.es.

Adiabatic quantum metrology with strongly correlated quantum optical systems



Downloads per month over past year

Ivanov, P. A. and Porras Torres, Diego (2013) Adiabatic quantum metrology with strongly correlated quantum optical systems. Physical review A, 88 (2). ISSN 1050-2947

[thumbnail of PorrasTorreDiego 03 LIBRE.pdf]

Official URL: http:// dx.doi.org/10.1103/PhysRevA.88.023803


We show that the quasiadiabatic evolution of a system governed by the Dicke Hamiltonian can be described in terms of a self-induced quantum many-body metrological protocol. This effect relies on the sensitivity of the ground state to a small symmetry-breaking perturbation at the quantum phase transition, which leads to the collapse of the wave function into one of two possible ground states. The scaling of the final-state properties with the number of atoms and with the intensity of the symmetry-breaking field can be interpreted in terms of the precession time of an effective quantum metrological protocol. We show that our ideas can be tested with spin-phonon interactions in trapped ion setups. Our work points to a classification of quantum phase transitions in terms of the capability of many-body quantum systems for parameter estimation.

Item Type:Article
Additional Information:

©2013 American Physical Society
We thank K. Singer, S. Dawkins, and P. O. Schmidt for useful discussions. This work was supported by Bulgarian NSF Grants No. DMU-03/107 and No. NSF D002-90/08, Spanish projects QUITEMAD (S2009-ESP-1594), RyC Contract No. Y200200074, and European COST Action MP IOTA 1001.

Uncontrolled Keywords:Trapped ions; Phase-transition; Dicke-model; States; Spectroscopy; Simulations; Atoms; Field
Subjects:Sciences > Physics
ID Code:47329
Deposited On:08 May 2018 11:11
Last Modified:09 May 2018 08:51

Origin of downloads

Repository Staff Only: item control page