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Casabone B, Friebe K, Brandstätter B, et al. Enhanced quantum interface with collective ion-cavity coupling. Phys Rev Lett. 2015;114(2):023602doi: 10.1103/PhysRevLett.114.023602.
Casabone, B., Friebe, K., Brandstätter, B., Schüppert, K., Blatt, R., & Northup, T. E. (2015). Enhanced quantum interface with collective ion-cavity coupling. Physical review letters, 114(2), 023602. https://doi.org/10.1103/PhysRevLett.114.023602
Casabone, B, et al. "Enhanced quantum interface with collective ion-cavity coupling." Physical review letters vol. 114,2 (2015): 023602. doi: https://doi.org/10.1103/PhysRevLett.114.023602
Casabone B, Friebe K, Brandstätter B, Schüppert K, Blatt R, Northup TE. Enhanced quantum interface with collective ion-cavity coupling. Phys Rev Lett. 2015 Jan 16;114(2):023602. doi: 10.1103/PhysRevLett.114.023602. Epub 2015 Jan 14. PMID: 25635546.
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Phys Rev Lett. 2015 Jan 16;114(2):023602. doi: 10.1103/PhysRevLett.114.023602. Epub 2015 Jan 14.

Enhanced quantum interface with collective ion-cavity coupling.

Physical review letters

B Casabone, K Friebe, B Brandstätter, K Schüppert, R Blatt, T E Northup

Affiliations

  1. Institut für Experimentalphysik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria.
  2. Institut für Experimentalphysik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria and Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Technikerstraße 21a, 6020 Innsbruck, Austria.

PMID: 25635546 DOI: 10.1103/PhysRevLett.114.023602

Abstract

We prepare a maximally entangled state of two ions and couple both ions to the mode of an optical cavity. The phase of the entangled state determines the collective interaction of the ions with the cavity mode, that is, whether the emission of a single photon into the cavity is suppressed or enhanced. By adjusting this phase, we tune the ion-cavity system from sub- to superradiance. We then encode a single qubit in the two-ion superradiant state and show that this encoding enhances the transfer of quantum information onto a photon.

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