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Andre Petukhov

Andre Petukhov has been a member of the QuAIL team since 2014. He is currently working on macroscopic quantum tunneling in coupled ferromagnetic clusters for quantum annealing applications, and on qubit-qubit coupling via periodic patterned waveguides.

Bio

Petukhov joined the QuAIL team in 2014 as a senior scientist under the Intergovernmental Personnel Act (IPA) Mobility Program from the South Dakota School of Mines and Technology in Rapid City, where he is a professor of physics and department head. In the past, he served as a principle investigator under multiple NASA grants, worked as a summer faculty member at NASA Glenn Research Center, and spent a year at NASA Ames Research Center as a sabbatical visitor. He also worked as a summer faculty member and sabbatical fellow at the Naval Research Laboratory in Washington, D.C. Before joining the faculty at South Dakota Tech, he worked as a senior research associate at Case Western Reserve University in Cleveland, where he is currently an adjunct professor. He obtained his master's degree in theoretical physics at Odessa State University in Ukraine, and his Ph.D. in physics at St. Petersburg State Polytechnical University (Leningrad Polytechnic Institute) in St. Petersburg, Russia. He has coauthored more than hundred papers in peer-reviewed international physics journals.

Research Interests

Petukhov's scientific interests include quantum many-body theory, density functional theory, quantum information processing, and spintronics. He developed a theory of spin-dependent resonant tunneling in various types of quantum spintronic devices such as magnetic resonant tunneling diodes and tunnel junctions. He also explained giant magnetoresistance of paramagnetic quantum dot arrays in terms of incoherent tunneling (nearest-neighbor and variable range hopping) of magnetic polarons. This resulted in further studies of many-body effects and spin fluctuations in semiconductor magnetic quantum dots, for example, emergence of magnetic bipolarons. In collaboration with his NASA colleagues, he proposed a new quantum computing scheme based on long-lived states of a lithium donor in silicon, and investigated the large spin Stark effect in these systems. His work with the QuAIL team will concentrate on studying the complexity of quantum annealing in various multi-qubit settings, such as coupled ferromagnetic clusters, central spin models, and linear Ising chains with disorder.

Selected Publications

Andre Petukhov Andre Petukhov
Senior Scientist, NASA Ames Research Center
andre.g.petukhov@nasa.gov

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