Demonstration of conditional quantum phase shift between ions in a solid.

@article{Longdell2004DemonstrationOC,
  title={Demonstration of conditional quantum phase shift between ions in a solid.},
  author={J. Longdell and M. Sellars and N. Manson},
  journal={Physical review letters},
  year={2004},
  volume={93 13},
  pages={
          130503
        }
}
Because of their long coherence times, dopant ions have been considered promising candidates for scalable solid state quantum computing. Here we demonstrate a conditional phase shift between two qubits based on an optical transition of europium ions. The demonstration uses ensembles that have been selected from a randomly doped sample using spectral hole burning techniques. The electron dipole-dipole interaction between the ions that usually causes instantaneous spectral diffusion is used to… Expand

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References

SHOWING 1-8 OF 8 REFERENCES
Experimental demonstration of quantum-state tomography and qubit-qubit interactions for rare-earth-metal-ion-based solid-state qubits
We report on the implementation of quantum state tomography for an ensemble of ${\text{Eu}}^{3+}$ dopant ions in a ${\mathrm{Y}}_{2}{\text{SiO}}_{5}$ crystal. The tomography was applied to a qubitExpand
Solid state coherent transient measurements using hard optical pulses
TLDR
With the narrow feature it is shown that it is feasible to apply complex optical pulse sequences analogous to rf pulse sequences used extensively in NMR. Expand
APPL
Statistical packages have been used for decades to analyze large datasets or to perform mathematically intractable statistical methods. These packages are not capable of working with random variablesExpand
Phys
  • Rev. Lett. 92, 0077601
  • 2004
Phys
  • Rev. A 69, 032307
  • 2004
Phys
  • Rev. Lett. 84, 1152
  • 2000
Phys
  • Rev. Lett. 72, 2179
  • 1997
Phys
  • Rev. Lett. 63, 78
  • 1989