I am interested in complex quantum phenomena and most of my research to date has centered on topological band-structures and their potential usefulness for quantum information processing. In this context I have focused primarily on superconducting nanowires, which have been proposed as a way to trap and manipulate Majorana bound-states. Other related research topics include the role played by quantum resonances in driven chaotic systems, and the relationship between quantum error-correction and topological spin-models. Currently I am examining what are called strong-zero modes, and the possibility that they can be enhanced to robustly store quantum information at high temperatures.
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Dr. Graham Kells
Contact
email: gkells@stp.dias.ie
phone: 01 – 6140135
address: Rm. 405, DIAS, 10 Burlington Rd, D04 C932.
Group Webpage
Biography
I am interested in complex quantum phenomena and most of my research to date has centered on topological band-structures and their potential usefulness for quantum information processing. In this context I have focused primarily on superconducting nanowires, which have been proposed as a way to trap and manipulate Majorana bound-states. Other related research topics include the role played by quantum resonances in driven chaotic systems, and the relationship between quantum error-correction and topological spin-models. Currently I am examining what are called strong-zero modes, and the possibility that they can be enhanced to robustly store quantum information at high temperatures.
Recent Publications
Selected Publications
Error generation and propagation in Majorana-based topological qubits
A. Conlon, D. Pellegrino, J. K. Slingerland, S. Dooley, and G. Kells, Phys. Rev. B 100, 134307 (2019)
Localisation enhanced and degraded topological order in interacting p-wave wires
G. Kells, N. Moran, and D. Meidan, Phys. Rev. B 97, 085425 (2018)
Many body Majoranas and the equivalence of parity sectors
G. Kells, Phys. Rev. B 92 081401(R) (2015)
Topological Blocking in Quantum Quench Dynamics
G. Kells, D. Sen, J. K. Slingerland and S. Vishweshwara, Phys. Rev. B, 89, 235130 (2014)
Near-zero-energy end-states in topologically trivial spin-orbit coupled superconducting nanowires with smooth confinement.
G. Kells, D. Meidan, and P. W. Brouwer , Phys. Rev. B 86, 100503(R) (2012)
Low-energy sub-gap states in multi-channel p-wave superconducting wires
G. Kells, D. Meidan and P. W. Brouwer Phys. Rev. B 85, 060507(R) (2012)
Exact results on the star lattice chiral spin liquid
G. Kells, D. Mehta, J.K. Slingerland and J. Vala Phys. Rev. B 81, 104429 (2010)
A description of Kitaev’s honeycomb model with toric-code stabilizers
G. Kells, J. K. Slingerland and J. Vala., Phys. Rev. B 80, 125415 (2009)
School of Theoretical Physics
Recent Posts
Precise Predictions and New Insights for the Migdal Effect
Constraints on Variation of the Weak Scale from Big Bang Nucleosynthesis
Geometric Semimetals and Their Simulation in Synthetic Matter
Gauged Permutation Invariant Matrix Quantum Mechanics: Path Integrals
Rigor with Machine Learning from Field Theory to the Poincaré Conjecture
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