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Lab for Cavity Quantum Electrodynamics 1984-2015 |
Research
• Manipulation of Single Neutral Atoms
• Polarized-squeezed state quantum magnetometer system
Research Project
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Cavity QED based on F-P Micro-Cavity for Quantum information
Cavity quantum electrodynamics(QED) provides an enhanced interaction between single atoms and the cavity. The strongly coupled cavity QED system enables us to track and even control the position of single atoms in real time by feedback.[1–3]With the symmetric TEM10 cavity modes,[4] trajectory of single atoms can be determined with an improved spatial resolution.In our previous work, we have demonstrated the elimination of the degenerate trajectory of a single atom by the tilted TEM10 mode.[5] Taking this forward, one may expect that by employing even higher-order cavity modes, further improvement of trajectory measurement could be realized, provided that the atom-cavity interaction is still in strong coupling regime. |
Precision measurement of single atoms strongly coupled to
We have experimentally demonstrated the strong coupling between single atoms and the higherorder Hermite-Gaussian transverse modes in a high-finesse optical microcavity. Compared to the usual low-order symmetric transverse modes, multiple lobes and the asymmetric spatial pattern of the titled modes provide more information about the motion of single atoms in the cavity. The motional information can be extracted from the measured transmission spectra, which includes the velocities and the positions of the atoms in vertical and off-axis directions. The scheme has great potential in time-resolved atom-cavity microscopy and in tracking the three-dimensional single atom trajectory in real time.
More information can be found in [6].
References:
[1]C. J. Hood, T. W. Lynn, A. C. Doherty, A. S. Parkins, and H. J. Kimble,Science 287, 1447 (2000).
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