Manipulation and detection of a trapped Yb+ hyperfine qubit

@article{Olmschenk2007ManipulationAD,
  title={Manipulation and detection of a trapped Yb+ hyperfine qubit},
  author={Steven Matthew Olmschenk and Kelly Cooper Younge and David L. Moehring and Dzmitry Matsukevich and Peter Maunz and Christopher R. Monroe},
  journal={Physical Review A},
  year={2007},
  volume={76},
  pages={052314}
}
We demonstrate the use of trapped ytterbium ions as quantum bits for quantum information processing. We implement fast, efficient state preparation and state detection of the first-order magnetic field-insensitive hyperfine levels of $^{171}\mathrm{Yb}^{+}$, with a measured coherence time of $2.5\phantom{\rule{0.3em}{0ex}}\mathrm{s}$. The high efficiency and high fidelity of these operations is accomplished through the stabilization and frequency modulation of relevant laser sources. 

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References

SHOWING 1-10 OF 59 REFERENCES

Near-perfect simultaneous measurement of a qubit register

Improvements in readout speed and fidelity are discussed in the context of scalable quantum computation architectures.

Speed optimized two-qubit gates with laser coherent control techniques for ion trap quantum computing.

A new concept for a two-qubit gate operating on a pair of trapped ions based on laser coherent control techniques is proposed, which is insensitive to the temperature of the ions, works also outside the Lamb-Dicke regime, and can be orders of magnitude faster than the trap period.

Self-learning estimation of quantum states

We report the experimental estimation of arbitrary qubit states using a succession of N measurements on individual qubits, where the measurement basis is changed during the estimation procedure

Experimental Issues in Coherent Quantum-State Manipulation of Trapped Atomic Ions

Some experimental issues in the proposal for trappedion quantum computation by J. I. Cirac and P. Zoller (University of Innsbruck) are discussed and several possible decoherence mechanisms are examined.

Quantum Computing with Trapped Ion Hyperfine Qubits

AbstractWe discuss the basic aspects of quantum information processing with trapped ions, including the principles of ion trapping, preparation and detection of hyperfine qubits, single-qubit

Electrodynamically trapped Yb + ions for quantum information processing

When investigating fundamental questions related to quantum mechanics, experiments are called for where individual quantum systems can be accessed and deterministically manipulated. The interaction

Ultrafast coherent excitation of a trapped ion qubit for fast gates and photon frequency qubits.

This work demonstrates ultrafast coherent excitation of an atomic qubit stored in the hyperfine levels of a single trapped cadmium ion, crucial for entangling networks of remotely located trapped ions through the interference of photon frequency qubits.

Laser cooling of trapped ytterbium ions using a four-level optical-excitation scheme.

Forescence line shapes of the cooling transition indicate that small numbers of Yb + ions were cooled in this way to kinetic temperatures below 1 K, which is much more attractive than the 2.438 μm radiation used previously.

Population trapping in excited Yb ions.

Resonant laser excitation of Yb ions confined in an rf ion trap is found to result in perfect population trapping in the highly metastable $^{2}\mathrm{F}_{7/2}$ state. The lifetime of this level is

Quantum Computations with Cold Trapped Ions.

A quantum computer can be implemented with cold ions confined in a linear trap and interacting with laser beams, where decoherence is negligible, and the measurement can be carried out with a high efficiency.
...