Quantum circuits for strongly correlated quantum systems

Autor(en)

Frank Verstraete, J. Ignacio Cirac, José Ignacio Latorre

Abstrakt

We present an approach to gain detailed control on the quantum simulation of strongly correlated quantum many-body systems by constructing the explicit finite quantum circuits that diagonalize their dynamics. As a particularly simple instance, the full dynamics of a one-dimensional Quantum Ising model in a transverse field with four spins is shown to be reproduced using a quantum circuit of only six local gates. This opens up the possibility of experimentally producing strongly correlated states, their time evolution at zero time, and even thermal superpositions at zero temperature. Our method also allows one to uncover the exact circuits corresponding to models that exhibit topological order and to stabilizer states.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Max-Planck-Institut für Quantenoptik, Universitat Autònoma de Barcelona

Journal

Physical Review A

Band

79

Anzahl der Seiten

5

ISSN

1050-2947

DOI

https://doi.org/10.1103/PhysRevA.79.032316

Publikationsdatum

03-2009

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/7a9b7c53-8f98-485a-bab3-fec7d615e25c