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IQUIST/ICMT Seminar: "Quantum control with accelerated adiabatic evolution"

Event Type
Deparatment of Physics
190 ESB
Mar 9, 2020   12:00 pm  
Hugo Ribeiro, Max Planck Institute for the Science of Light
Marjorie Gamel
Originating Calendar
IQUIST Seminar Series

Control schemes based on adiabatic evolution are a powerful tool to manipulate quantum systems because of their inherent robustness against parameter variations. However, due to their long evolution time they leave any experimental setting subject to decoherence. To remedy this issue several strategies, commonly called shortcuts-to-adiabaticity, have been put forward to accelerate adiabatic evolution. While in principle these techniques allow one to speed up adiabatic passage without loss of fidelity, they are oftentimes experimentally impractical as they may require complex experimental resources to realize interactions absent from the original Hamiltonian.

In this talk, I will present a framework that allows one to accelerate adiabatic evolution and predicts control sequences that are compatible with experimental constraints [1]. I will then discuss how the method can be used to speed-up state transfer based on stimulated Raman adiabatic passage (STIRAP) [2], high-fidelity single-qubit gates [3], and quantum state preparation [4]. 

[1] A. Baksic, H. Ribeiro, and A. A. Clerk, Phys. Rev. Lett. 116, 230503 (2016).

[2] B. B. Zhou, A. Baksic, H. Ribeiro, C. G. Yale, F. J Heremans, P. C. Jerger, A. Auer, G. Burkard, A. A. Clerk, D. D. Awschalom, Nat. Phys. 13, 330-334 (2017).

[3] H. Ribeiro and A. A. Clerk, Phys. Rev. A 100, 032323 (2019).

[4] J. Kölbl, A. Barfuss, M. S. Kasperczyk, L. Thiel, A. A. Clerk, H. Ribeiro, P. Maletinsky, Phys. Rev. Lett. 122, 090502 (2019).

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