State-dependent lattices for quantum computing with alkaline-earth-metal atoms

A. J. Daley, J. Ye, P. Zoller

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Recent experimental progress with Alkaline-Earth atoms has opened the door to quantum computing schemes in which qubits are encoded in long-lived nuclear spin states, and the metastable electronic states of these species are used for manipulation and readout of the qubits. Here we discuss a variant of these schemes, in which gate operations are performed in nuclear-spin-dependent optical lattices, formed by near-resonant coupling to the metastable excited state. This provides an alternative to a previous scheme [Phys. Rev. Lett. 101, 170504 (2008)], which involved independent lattices for different electronic states. As in the previous case, we show how existing ideas for quantum computing with Alkali atoms such as entanglement via controlled collisions can be freed from important technical restrictions. We also provide additional details on the use of collisional losses from metastable states to perform gate operations via a lossy blockade mechanism.
LanguageEnglish
Pages207-217
Number of pages11
JournalEuropean Physical Journal D: Atomic, Molecular, Optical and Plasma Physics
Volume65
Issue number1-2
DOIs
Publication statusPublished - Nov 2011

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alkaline earth metals
quantum computation
nuclear spin
electronics
metastable state
atoms
readout
manipulators
alkalies
constrictions
collisions
excitation

Keywords

  • state-dependent lattices
  • quantum computing
  • alkaline-earth-metal atoms
  • quantum computing schemes

Cite this

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State-dependent lattices for quantum computing with alkaline-earth-metal atoms. / Daley, A. J.; Ye, J.; Zoller, P.

In: European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics, Vol. 65, No. 1-2, 11.2011, p. 207-217.

Research output: Contribution to journalArticle

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