Compressed simulation of evolutions of the XY model

Autor(en)

W. L. Boyajian, V. Murg, B. Kraus

Abstrakt

We extend the notion of compressed quantum simulation to the XY model. We derive a quantum circuit processing log(n) qubits which simulates the one-dimensional XY model describing n qubits. In particular, we demonstrate how the adiabatic evolution can be realized on this exponentially smaller system and how the magnetization, which witnesses a quantum phase transition, can be observed. Furthermore, we analyze several dynamical processes, like quantum quenching and finite time evolution, and derive the corresponding compressed quantum circuit.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Leopold-Franzens-Universität Innsbruck

Journal

Physical Review A

Band

88

Anzahl der Seiten

18

ISSN

1050-2947

DOI

https://doi.org/10.1103/PhysRevA.88.052329

Publikationsdatum

11-2013

Peer-reviewed

Ja

ÖFOS 2012

103036 Theoretische Physik, 103026 Quantenoptik

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/b7ca2c0d-69da-4d6b-ad7d-cf70c9dde767