BIOMAT Database Logo BIOMAT Database Logo

Observation of coherent oscillation in single-passage Landau-Zener transitions. 2015

Guozhu Sun, and Xueda Wen, and Ming Gong, and Dan-Wei Zhang, and Yang Yu, and Shi-Liang Zhu, and Jian Chen, and Peiheng Wu, and Siyuan Han
1] National Laboratory of Solid State Microstructures and Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China [2] Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China [3] Department of Physics and Astronomy, University of Kansas, Lawrence, KS 66045, USA.

Landau-Zener transition (LZT) has been explored in a variety of physical systems for coherent population transfer between different quantum states. In recent years, there have been various proposals for applying LZT to quantum information processing because when compared to the methods using ac pulse for coherent population transfer, protocols based on LZT are less sensitive to timing errors. However, the effect of finite range of qubit energy available to LZT based state control operations has not been thoroughly examined. In this work, we show that using the well-known Landau-Zener formula in the vicinity of an avoided energy-level crossing will cause considerable errors due to coherent oscillation of the transition probability in a single-passage LZT experiment. The data agree well with the numerical simulations which take the transient dynamics of LZT into account. These results not only provide a closer view on the issue of finite-time LZT but also shed light on its effects on the quantum state manipulation.

UI MeSH Term Description Entries

Related Publications

Guozhu Sun, and Xueda Wen, and Ming Gong, and Dan-Wei Zhang, and Yang Yu, and Shi-Liang Zhu, and Jian Chen, and Peiheng Wu, and Siyuan Han
Dephasing of interference in Landau-Zener transitions.
April 1993, Physical review. B, Condensed matter,
Guozhu Sun, and Xueda Wen, and Ming Gong, and Dan-Wei Zhang, and Yang Yu, and Shi-Liang Zhu, and Jian Chen, and Peiheng Wu, and Siyuan Han
Landau-Zener transitions in frozen pairs of Rydberg atoms.
April 2010, Physical review letters,
Guozhu Sun, and Xueda Wen, and Ming Gong, and Dan-Wei Zhang, and Yang Yu, and Shi-Liang Zhu, and Jian Chen, and Peiheng Wu, and Siyuan Han
Spin-transistor action via tunable Landau-Zener transitions.
July 2012, Science (New York, N.Y.),
Guozhu Sun, and Xueda Wen, and Ming Gong, and Dan-Wei Zhang, and Yang Yu, and Shi-Liang Zhu, and Jian Chen, and Peiheng Wu, and Siyuan Han
Landau-Zener transitions and dissipation in a mesoscopic ring.
February 1996, Physical review. B, Condensed matter,
Guozhu Sun, and Xueda Wen, and Ming Gong, and Dan-Wei Zhang, and Yang Yu, and Shi-Liang Zhu, and Jian Chen, and Peiheng Wu, and Siyuan Han
Symmetry-Breaking Assisted Landau-Zener Transitions in Rydberg Atoms.
February 2018, Physical review letters,
Guozhu Sun, and Xueda Wen, and Ming Gong, and Dan-Wei Zhang, and Yang Yu, and Shi-Liang Zhu, and Jian Chen, and Peiheng Wu, and Siyuan Han
Observation of Landau-Zener dynamics in classical optical systems.
January 1995, Physical review. A, Atomic, molecular, and optical physics,
Guozhu Sun, and Xueda Wen, and Ming Gong, and Dan-Wei Zhang, and Yang Yu, and Shi-Liang Zhu, and Jian Chen, and Peiheng Wu, and Siyuan Han
Enhancement of macroscopic quantum tunneling by Landau-Zener transitions.
July 2003, Physical review letters,
Guozhu Sun, and Xueda Wen, and Ming Gong, and Dan-Wei Zhang, and Yang Yu, and Shi-Liang Zhu, and Jian Chen, and Peiheng Wu, and Siyuan Han
Characterization of Landau-Zener transitions in systems with complex spectra.
November 1996, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics,
Guozhu Sun, and Xueda Wen, and Ming Gong, and Dan-Wei Zhang, and Yang Yu, and Shi-Liang Zhu, and Jian Chen, and Peiheng Wu, and Siyuan Han
Landau-Zener transitions in a dissipative environment: numerically exact results.
November 2009, Physical review letters,
Guozhu Sun, and Xueda Wen, and Ming Gong, and Dan-Wei Zhang, and Yang Yu, and Shi-Liang Zhu, and Jian Chen, and Peiheng Wu, and Siyuan Han
Temperature can enhance coherent oscillations at a Landau-Zener transition.
November 2011, Physical review letters,
Copied contents to your clipboard!