Linear-Optical Generation of Eigenstates of the Two-Site XY Model

Autor(en)

Stefanie Barz, Borivoje Dakic, Yannick Ole Lipp, Frank Verstraete, James D. Whitfield, Philip Walther

Abstrakt

Much of the anticipation accompanying the development of a quantum computer relates to its application to simulating dynamics of another quantum system of interest. Here, we study the building blocks for simulating quantum spin systems with linear optics. We experimentally generate the eigenstates of the XY Hamiltonian under an external magnetic field. The implemented quantum circuit consists of two CNOT gates, which are realized experimentally by harnessing entanglement from a photon source and applying a CPHASE gate. We tune the ratio of coupling constants and the magnetic field by changing local parameters. This implementation of the XY model using linear quantum optics might open the door to future studies of quenching dynamics using linear optics.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Österreichische Akademie der Wissenschaften (ÖAW)

Journal

Physical Review X

Band

5

Anzahl der Seiten

6

ISSN

2160-3308

DOI

https://doi.org/10.1103/PhysRevX.5.021010

Publikationsdatum

04-2015

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/44cc087f-f766-4199-bc2a-bc6cbb29b8fc