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Terhal Group

The theory group led by Barbara Terhal works, in collaboration with experimental teams, on the realization of quantum error correction in various hardware platforms. Besides work on error correction, the group is interested in the theoretical description of superconducting qubit devices in general and the design of `different’ superconducting qubits. Other strands of theoretical research in which group members engage in is the use of quantum and classical algorithms for (approximate) optimization problems.

 

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Research Themes:

+ Quantum Error Correction and Fault-Tolerance

+ Superconducting Qubits

+ Quantum Computational Advantage, Algorithms and Complexity

The current work on quantum error correction in the group is funded by a ERC consolidator grant. In addition, we are part of European Quantum Code Design and Architecture Consortium.

Significant Publications

B.M. Terhal, “Bell Inequalities and The Separability Criterion”, Physics Letters A 271, 319 (2000)

B.M. Terhal and D.P. DiVincenzo, “Adaptive quantum computation, constant depth quantum circuits, and Arthur Merlin games”, Quant. Inf. and Comp. 4:2, pp. 134-145 (2004)

R. Oliveira and B.M. Terhal, “The Complexity of Quantum Spin Systems on a Two-dimensional Square Lattice”, Quant. Inf. Comp. Volume 8, No. 10, pp. 0900-0924 (2008)

S. Bravyi and B.M. Terhal, “A No-Go Theorem for a Two-Dimensional Self-Correcting Memory Based on Stabilizer Codes”, New J. Phys. 11 (2009) 043029

B.M. Terhal, F. Hassler and D.P. DiVincenzo, “From Majorana Fermions to Topological Order”, Phys. Rev. Lett. 108, 260504 (2012)

B.M. Terhal, “Quantum Error Correction for Quantum Memories”, Rev. Mod. Phys. 87, 307 (2015)

K. Duivenvoorden, B.M. Terhal and D. Weigand, “Single-mode Displacement Sensor”, Phys. Rev. A 95, 012305 (2017)

E.T. Campbell, B.M. Terhal and C. Vuillot, “Roads towards fault-tolerant universal quantum computation”, Nature 549, 172 (2017)