.png){kind=icon}
Return
Quantum phases with differing computational power
.png){kind=icon}
OA
AI
DOI：10.1038/ncomms1809.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
The observation that concepts from quantum information has generated many alternative indicators of quantum phase transitions hints that quantum phase transitions possess operational significance with respect to the processing of quantum information. Yet, studies on whether such transitions lead to quantum phases that differ in their capacity to process information remain limited. Here we show that there exist quantum phase transitions that cause a distinct qualitative change in our ability to simulate certain quantum systems under perturbation of an external field by local operations and classical communication. In particular, we show that in certain quantum phases of the XY model, adiabatic perturbations of the external magnetic field can be simulated by local spin operations, whereas the resulting effect within other phases results in coherent non-local interactions. We discuss the potential implications to adiabatic quantum computation, where a computational advantage exists only when adiabatic perturbation results in coherent multi-body interactions.
Keywords:
XY-MODEL
ENTANGLEMENT
SYSTEMS
STATES
TRANSFORMATIONS
MATRIX
SPINS
Journal
IF:
15.7
Papers:
9.4W
Citations:
91.2W
Organization
View more organizations
Cited Papers
ShareSaveShareSaveShareSaveShareSaveDomain structure of human plasma and cellular fibronectin. Use of a monoclonal antibody and heparin affinity to identify three different subunit chains.png)
Biochemistry
BiochemistryIF0
PREAI
ShareSaveMatrix product states, projected entangled pair states, and variational renormalization group methods for quantum spin systemsADVANCES IN PHYSICSOAAI
ADVANCES IN PHYSICSIF13.8
OAAIShareSave
ShareSave View more