Quantum harmonic oscillator state synthesis and analysis

@inproceedings{Itano1997QuantumHO,
title={Quantum harmonic oscillator state synthesis and analysis},
author={Wayne M. Itano and Christopher R. Monroe and D. M. Meekhof and Dietrich Leibfried and B. E. King and David J. Wineland},
booktitle={Photonics West},
year={1997}
}
• Published in Photonics West 19 February 1997
• Physics
We laser-cool single beryllium ions in a Paul trap to the ground (n equals 0) quantum harmonic oscillator state with greater than 90% probability. From this starting point, we can put the atom into various quantum states of motion by application of optical and rf electric fields. Some of these states resemble classical states (the coherent states), while others are intrinsically quantum, such as number states or squeezed states. We have created entangled position and spin superposition states…

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References

SHOWING 1-10 OF 40 REFERENCES

Experimental preparation and measurement of quantum states of motion of a trapped atom

• Physics
• 1997
Abstract We report the creation and full determination of several quantum states of motion of a 9Be+ ion bound in a RF (Paul) trap. The states are coherently prepared from an ion which has been

A “Schrödinger Cat” Superposition State of an Atom

• Physics
Science
• 1996
A “Schrödinger cat''-like state of matter was generated at the single atom level by application of a sequence of laser pulses, which entangles internal and external states of the ion.

Experimental Determination of the Motional Quantum State of a Trapped Atom.

Using novel reconstruction schemes, both the density matrix in the number state basis and the Wigner function are determined, which are sensitive indicators of decoherence in the system.

Unbalanced homodyning for quantum state measurements.

• Physics
Physical review. A, Atomic, molecular, and optical physics
• 1996
The reconstruction of the quantum state of light from the homodyne photocounting statistics of a single, realistic photodetector is proposed and it is shown that perturbing effects due to classical noise of the local oscillator are small.

Generation of nonclassical motional states of a trapped atom.

The creation of thermal, Fock, coherent, and squeezed states of motion of a harmonically bound Be ion, which is trapped in the regime where the coupling between its motional and internal states can be described by a Jaynes-Cummings-type interaction.

Quantum-limited cooling and detection of radio-frequency oscillations by laser-cooled ions.

• Physics
Physical review. A, Atomic, molecular, and optical physics
• 1990
A single trapped ion, laser cooled into its quantum ground state of motion, may be used as a very-low-temperature detector of radio-frequency signals applied to the trap end caps of single trapped electron and proton spectroscopy.

Reduction of the wave packet: Preferred observable and decoherence time scale.

• Paz
• Physics
Physical review. D, Particles and fields
• 1993
Decoherence in the low-tem temperature regime is analyzed and it is shown that the usual "high-temperature" approximation is remarkably accurate in its domain of applicability.

Wigner functions in the Paul trap

• Physics
• 1995
The authors review the theory of the harmonic oscillator with time-dependent frequency by means of an approach based on an operator constant of the motion. With the help of this operator constant we

Resolved-sideband Raman cooling of a bound atom to the 3D zero-point energy.

• Monroe
• Physics
Physical review letters
• 1995
We report laser cooling of a single $^{9}\mathrm{Be}^{+}$ ion held in a rf (Paul) ion trap to where it occupies the quantum-mechanical ground state of motion. With the use of resolved-sideband

Endoscopy in the Paul Trap: Measurement of the Vibratory Quantum State of a Single Ion.

• Physics
Physical review letters
• 1996
We reconstruct the density operator of the center-of-mass motion of an ion stored in a Paul trap by mapping the dynamics of the motion onto the internal dynamics of the ion. Our technique takes into