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Majorana fermions in superconducting nanowires without spin-orbit coupling
Morten Kjaergaard, Konrad Wölms, Karsten Flensberg
We show that confined Majorana fermions can exist in nanowires with proximity induced s-wave superconducting pairing if the direction of an external magnetic field rotates along th…
Spin-orbit-induced strong coupling of a single spin to a nanomechanical resonator
András Pályi, P. R. Struck, Mark Rudner +2
We theoretically investigate the deflection-induced coupling of an electron spin to vibrational motion due to spin-orbit coupling in suspended carbon nanotube quantum dots. Our est…
Nonequilibrium transport through a spinful quantum dot with superconducting leads
B. M. Andersen, K. Flensberg, V. Koerting +1
We study the nonlinear cotunneling current through a spinful quantum dot contacted by two superconducting leads. Applying a general nonequilibrium Green function formalism to an ef…
Dephasing and Hyperfine Interaction in Carbon Nanotubes Double Quantum Dots: The Clean Limit
Andres A. Reynoso, Karsten Flensberg
We consider theoretically C-hyperfine interaction induced dephasing in carbon nanotubes double quantum dots with curvature induced spin-orbit coupling. For two electrons i…
Quantum information transfer between topological and spin qubit systems
Martin Leijnse, Karsten Flensberg
We propose a method to coherently transfer quantum information, and to create entanglement, between topological qubits and conventional spin qubits. Our suggestion uses gated contr…
A number conserving theory for topologically protected degeneracy in one-dimensional fermions
Jay D. Sau, B. I. Halperin, K. Flensberg +1
Semiconducting nanowires in proximity to superconductors are among promising candidates to search for Majorana fermions and topologically protected degeneracies which may ultimatel…