Kathy-Anne Brickman Soderberg et al 2009 New J. Phys. 11 055022 doi:10.1088/1367-2630/11/5/055022
Ultracold molecules: vehicles to scalable quantum information processing
Focus on Cold and Ultracold MoleculesKathy-Anne Brickman Soderberg, Nathan Gemelke and Cheng Chin1
Show affiliationsPart of Focus on Cold and Ultracold Molecules
In this paper, we describe a novel scheme to implement scalable quantum information processing using Li–Cs molecular states to entangle 6Li and 133Cs ultracold atoms held in independent optical lattices. The 6Li atoms will act as quantum bits to store information and 133Cs atoms will serve as messenger bits that aid in quantum gate operations and mediate entanglement between distant qubit atoms. Each atomic species is held in a separate optical lattice and the atoms can be overlapped by translating the lattices with respect to each other. When the messenger and qubit atoms are overlapped, targeted single-spin operations and entangling operations can be performed by coupling the atomic states to a molecular state with radio-frequency pulses. By controlling the frequency and duration of the radio-frequency pulses, entanglement can be either created or swapped between a qubit messenger pair. We estimate operation fidelities for entangling two distant qubits and discuss scalability of this scheme and constraints on the optical lattice lasers. Finally we demonstrate experimental control of the optical potentials sufficient to translate atoms in the lattice.
- PACS
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03.67.Mn Entanglement measures, witnesses, and other characterizations
42.50.Dv Quantum state engineering and measurements
37.10.Mn Slowing and cooling of molecules
03.67.Lx Quantum computation architectures and implementations
- Subjects
- Dates
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Issue 5 (May 2009)
Received 2 December 2008
Published 14 May 2009
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Ultracold molecules: vehicles to scalable quantum information processing
Kathy-Anne Brickman Soderberg et al 2009 New J. Phys. 11 055022
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Ultracold molecules: new probes on the variation of fundamental constants
Cheng Chin et al 2009 New J. Phys. 11 055048
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