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Quantum Information Scrambling in a Trapped-Ion Quantum Simulator with Tunable Range Interactions.
Manoj K Joshi1,2, Andreas Elben1,2, Benoît Vermersch1,2,3
1Center for Quantum Physics, University of Innsbruck, Innsbruck A-6020, Austria.
Physical Review Letters
|July 9, 2020
Summary
Researchers experimentally demonstrated quantum information scrambling in a 10-qubit trapped-ion system. They used randomized measurements to estimate out-of-time ordered correlators, revealing insights into quantum chaos and thermalization.
Area of Science:
- Quantum physics
- Many-body quantum systems
- Quantum information science
Background:
- Locally encoded quantum information becomes inaccessible in ergodic many-body quantum systems over time.
- Quantum scrambling is key to understanding quantum chaos and thermalization.
- Experimental demonstration of scrambling is crucial for advancing quantum technologies.
Purpose of the Study:
- To experimentally demonstrate quantum information scrambling.
- To investigate the dynamics of chaos and thermalization in quantum systems.
- To analyze the impact of decoherence on quantum scrambling.
Main Methods:
- Utilized a 10-qubit trapped-ion quantum simulator with tunable long-range interactions.
- Estimated out-of-time ordered correlators (OTOCs) using randomized measurements.
- Measured Rényi entanglement entropies and compared results with numerical simulations.
Main Results:
- Achieved the first experimental demonstration of quantum information scrambling in a 10-qubit system.
- Quantified scrambling dynamics by estimating OTOCs.
- Analyzed the influence of decoherence by comparing experimental data with simulations.
Conclusions:
- The study provides experimental evidence for quantum information scrambling in a realistic quantum simulator.
- The findings deepen the understanding of many-body quantum dynamics, chaos, and thermalization.
- The research paves the way for exploring complex quantum phenomena and developing robust quantum technologies.
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