caa a22 4500 445886331 CHVBK 20180317145601.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s11128-011-0301-7 doi (NATIONALLICENCE)springer-10.1007/s11128-011-0301-7 Quantum information processing in self-assembled crystals of cold polar molecules [Elektronische Daten] [M. Ortner, Y. Zhou, P. Rabl, P. Zoller] We discuss the implementation of quantum gate operations in a self-assembled 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 position with 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 Quantum information processing nationallicence Cold polar molecules nationallicence Self-assembled crystals of polar molecules nationallicence Molecular dipolar crystals nationallicence Enhanced phonon mediated interaction nationallicence Marker qubits nationallicence Local phonon modes nationallicence Molecular spin qubits nationallicence Ortner M. Institute for Theoretical Physics, University of Innsbruck, 6020, Innsbruck, Austria aut Zhou Y. College of Science, National University of Defense Technology, 410073, Changsha, China aut Rabl P. Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, 6020, Innsbruck, Austria aut Zoller P. Institute for Theoretical Physics, University of Innsbruck, 6020, Innsbruck, Austria aut Quantum Information Processing Springer US; http://www.springer-ny.com 10/6(2011-12-01), 793-819 1570-0755 10:6<793 2011 10 11128 https://doi.org/10.1007/s11128-011-0301-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11128-011-0301-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ortner M. Institute for Theoretical Physics, University of Innsbruck, 6020, Innsbruck, Austria aut NATIONALLICENCE 700 1- Zhou Y. College of Science, National University of Defense Technology, 410073, Changsha, China aut NATIONALLICENCE 700 1- Rabl P. Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, 6020, Innsbruck, Austria aut NATIONALLICENCE 700 1- Zoller P. Institute for Theoretical Physics, University of Innsbruck, 6020, Innsbruck, Austria aut NATIONALLICENCE 773 0- Quantum Information Processing Springer US; http://www.springer-ny.com 10/6(2011-12-01), 793-819 1570-0755 10:6<793 2011 10 11128 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer