Optimization of Yb{sup +} fluorescence and hyperfine-qubit detection

Journal Article · Wed Dec 15 04:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.063419· OSTI ID:21528919

Ejtemaee, S; Thomas, R; Haljan, P C ^[1]

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1. Department of Physics, Simon Fraser University, 8888 University Dr., Burnaby, British Columbia, V5A 1S6 (Canada)

Fluorescence of single, trapped {sup 171}Yb{sup +} ions has been experimentally studied as a function of laser polarization, power, and detuning and as a function of magnetic field strength. The suppression of efficient fluorescence by coherent population trapping and the counteracting effect of the magnetic field are found to agree with theoretical predictions. For comparison, a fluorescence study has also been made of the isotope {sup 174}Yb{sup +} for which coherent population trapping is absent on the main fluorescence and laser cooling transition. Finally, state-sensitive fluorescence detection of the {sup 171}Yb{sup +} hyperfine qubit is studied, including the role of coherent population trapping in the optimization of detection parameters. A qubit detection fidelity of greater than 97% is achieved.

• OSTI ID: 21528919
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
CHARGED PARTICLES
COMPARATIVE EVALUATIONS
DETECTION
EMISSION
EVALUATION
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FLUORESCENCE
INFORMATION
INTERMEDIATE MASS NUCLEI
IONS
ISOTOPES
LUMINESCENCE
MAGNETIC FIELDS
NUCLEI
OPTIMIZATION
PHOTON EMISSION
POLARIZATION
QUANTUM INFORMATION
QUBITS
RARE EARTH NUCLEI
STABLE ISOTOPES
TRAPPING
YTTERBIUM 171
YTTERBIUM 174
YTTERBIUM IONS
YTTERBIUM ISOTOPES