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Entanglement generation using discrete solitons in Coulomb crystals
H Landa1, A Retzker2, T Schaetz3
1School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel-Aviv University, Tel-Aviv 69978, Israel and Université Paris Sud, CNRS, LPTMS, UMR 8626, Orsay 91405, France.
Physical Review Letters
|August 16, 2014
Summary
Discrete solitons in laser-cooled ion crystals can generate quantum entanglement. This method, applicable to large 2D and 3D systems, utilizes unique motional modes for entanglement generation and system-environment interaction studies.
Area of Science:
- Quantum physics
- Atomic physics
- Condensed matter physics
Background:
- Laser-cooled and trapped ions form Coulomb crystals with discrete solitons.
- Discrete solitons are topologically protected nonlinear configurations with unique motional modes.
- These localized modes are separated from the main spectrum, offering potential for quantum control.
Purpose of the Study:
- To propose and analyze a method for generating quantum entanglement using discrete solitons in ion crystals.
- To investigate the feasibility of this method using state-of-the-art experimental techniques.
- To explore the application of discrete solitons in large-scale, multi-dimensional ion trap systems.
Main Methods:
- Studying the interaction of periodically driven planar ion crystals with optical forces.
- Analyzing the effects of micromotion in radio-frequency traps for planar crystals.
- Proposing a cooling scheme involving Doppler cooling and sideband cooling of localized modes.
Main Results:
- Discrete solitons exhibit a gap-separated, localized motional mode.
- The proposed method is analyzed in the context of experimental limitations, including micromotion.
- The gap separation of the localized mode is found to be largely independent of crystal size.
Conclusions:
- Discrete solitons in ion crystals offer a promising platform for generating quantum entanglement.
- The proposed method is robust and potentially scalable to large 2D and 3D ion trap systems.
- This approach can facilitate studies of system-environment interactions in complex quantum systems.
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