Title
Quantum information processing in self-assembled crystals of cold polar molecules
Abstract
We discuss the implementation of quantum gate operations in a selfassembled dipolar crystal of polar molecules. Here qubits are encoded in long-lived spin states of the molecular ground state and stabilized against collisions by repulsive dipole-dipole interactions. To overcome the single site addressability problem in this high density crystalline phase, we describe a new approach for implementing controlled single and two-qubit operations based on resonantly enhanced spin-spin interactions mediated by a localized phonon mode. This local mode is created at a specified lattice positionwith the help of an additional marker molecule such that individual qubits can be manipulated by using otherwise global static and microwave fields only. We present a general strategy for generating state and time dependent dipole moments to implement a universal set of gate operations for molecular qubits and we analyze the resulting gate fidelities under realistic conditions. Our analysis demonstrates the experimental feasibility of this approach for scalable quantum computing or digital quantum simulation schemes with polar molecules. © Springer Science+Business Media, LLC 2011.
Year
DOI
Venue
2011
10.1007/s11128-011-0301-7
Quantum Information Processing
Keywords
DocType
Volume
Cold polar molecules,Enhanced phonon mediated interaction,Local phonon modes,Marker qubits,Molecular dipolar crystals,Molecular spin qubits,Quantum information processing,Self-assembled crystals of polar molecules
Journal
10
Issue
ISSN
Citations 
6
null
0
PageRank 
References 
Authors
0.34
1
4
Name
Order
Citations
PageRank
M. Ortner100.34
Y. L. Zhou200.34
P. Rabl300.34
P. Zoller4124.79