4 papers
RING: Rabi oscillations induced by nonresonant geometric drive
Baksa Kolok, András Pályi
Coherent control of two-level quantum systems is typically achieved using resonant driving fields, forming the basis for qubit operations. Here, we report a mechanism for inducing…
Acoustic phonons, spin-phonon coupling and spin relaxation via the lattice reorientation mechanism in hexagonal germanium nanowires
Baksa Kolok, György Frank, András Pályi
Spin relaxation via electron-phonon interaction is an important decoherence mechanism for spin qubits. In this work, we study spin relaxation in hexagonal (2H) germanium, a novel d…
Protocols to measure the non-Abelian Berry phase by pumping a spin qubit through a quantum-dot loop
Baksa Kolok, András Pályi
A quantum system constrained to a degenerate energy eigenspace can undergo a nontrival time evolution upon adiabatic driving, described by a non-Abelian Berry phase. This type of d…
Classification and magic magnetic-field directions for spin-orbit-coupled double quantum dots
Aritra Sen, György Frank, Baksa Kolok +2
The spin of a single electron confined in a semiconductor quantum dot is a natural qubit candidate. Fundamental building blocks of spin-based quantum computing have been demonstrat…