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Published on: November 11, 2013
NMR quantum simulation of localization effects induced by decoherence
Gonzalo A Alvarez1, Dieter Suter
1Fakultät Physik, Universität Dortmund, Otto-Hahn-Strasse 4, D-44221 Dortmund, Germany. galvarez@e3.physik.uni-dortmund.de
Physical Review Letters
|September 28, 2010
Summary
Quantum information coherence is limited by decoherence. This study shows that a dynamic equilibrium in spin clusters, influenced by perturbation strength, can localize quantum information transmission.
Area of Science:
- Quantum mechanics
- Quantum information science
- Condensed matter physics
Background:
- Quantum superposition states are fragile and susceptible to decoherence.
- Decoherence limits the utility and transmission distance of quantum information.
- Controlling decoherence is crucial for advancing quantum technologies.
Purpose of the Study:
- To investigate the localization of spin clusters in a quantum simulator.
- To understand how a perturbation affects information transmission dynamics.
- To determine the relationship between perturbation strength and cluster size.
Main Methods:
- Utilized a nuclear spin-based quantum simulator.
- Employed a Hamiltonian to drive information transmission.
- Introduced a variable-strength perturbation to counteract spreading.
- Measured the size of generated spin clusters.
Main Results:
- Observed the formation of spin clusters during information transmission.
- Identified a dynamic equilibrium in cluster size.
- Found that equilibrium cluster size decreases with the square of perturbation strength.
Conclusions:
- Dynamic equilibrium in spin clusters can localize quantum information.
- Perturbation strength is a key parameter in controlling quantum information spread.
- This work offers insights into mitigating decoherence in quantum systems.
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