Entanglement of polar symmetric top molecules as candidate qubits

Qi Wei, Sabre Kais, Bretislav Friedrich, Dudley Herschbach

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Proposals for quantum computing using rotational states of polar molecules as qubits have previously considered only diatomic molecules. For these the Stark effect is second-order, so a sizable external electric field is required to produce the requisite dipole moments in the laboratory frame. Here we consider use of polar symmetric top molecules. These offer advantages resulting from a first-order Stark effect, which renders the effective dipole moments nearly independent of the field strength. That permits use of much lower external field strengths for addressing sites. Moreover, for a particular choice of qubits, the electric dipole interactions become isomorphous with NMR systems for which many techniques enhancing logic gate operations have been developed. Also inviting is the wider chemical scope, since many symmetric top organic molecules provide options for auxiliary storage qubits in spin and hyperfine structure or in internal rotation states.

Original languageEnglish
Article number154102
JournalJournal of Chemical Physics
Volume135
Issue number15
DOIs
Publication statusPublished - 21 Oct 2011
Externally publishedYes

Fingerprint

Stark effect
Molecules
field strength
Dipole moment
dipole moments
molecules
rotational states
quantum computation
diatomic molecules
hyperfine structure
electric dipoles
logic
proposals
Logic gates
nuclear magnetic resonance
electric fields
Electric fields
Nuclear magnetic resonance
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Entanglement of polar symmetric top molecules as candidate qubits. / Wei, Qi; Kais, Sabre; Friedrich, Bretislav; Herschbach, Dudley.

In: Journal of Chemical Physics, Vol. 135, No. 15, 154102, 21.10.2011.

Research output: Contribution to journalArticle

Wei, Qi ; Kais, Sabre ; Friedrich, Bretislav ; Herschbach, Dudley. / Entanglement of polar symmetric top molecules as candidate qubits. In: Journal of Chemical Physics. 2011 ; Vol. 135, No. 15.
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