Dissipative Landau-Zener Tunneling in Quantum Systems
Author Information
Author(s): X. Dai, R. Trappen, H. Chen, D. Melanson, M. A. Yurtalan, D. M. Tennant, A. J. Martinez, Y. Tang, E. Mozgunov, J. Gibson, J. A. Grover, S. M. Disseler, J. I. Basham, S. Novikov, R. Das, A. J. Melville, B. M. Niedzielski, C. F. Hirjibehedin, K. Serniak, S. J. Weber, J. L. Yoder, W. D. Oliver, K. M. Zick, D. A. Lidar, A. Lupascu
Primary Institution: University of Waterloo
Hypothesis
How does the coupling to the environment affect Landau-Zener tunneling in quantum systems?
Conclusion
The study reveals a crossover from weak to strong coupling in Landau-Zener tunneling, affecting the transition probabilities.
Supporting Evidence
- The study confirms previous theoretical predictions about the effects of dissipation on Landau-Zener tunneling.
- A spin bath model was developed to explain the observed crossover in coupling regimes.
- Experimental results showed a non-monotonic dependence of transition probabilities on sweep time in the weak coupling limit.
Takeaway
This study looks at how quantum systems behave when they interact with their surroundings, showing that this interaction can change how they tunnel between states.
Methodology
The researchers used a tunable superconducting flux qubit to observe Landau-Zener tunneling across different coupling strengths.
Limitations
The study may not account for all types of noise or environmental factors that could influence the results.
Digital Object Identifier (DOI)
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