261 citations · 760 across the 21 of their papers we have counts for
10 papers · 1 filter
Initialisation of single spin dressed states using shortcuts to adiabaticity
Johannes Kölbl, Arne Barfuss, Mark Kaspercyzk +4
We demonstrate the use of shortcuts to adiabaticity protocols for initialisation, readout, and coherent control of dressed states generated by closed-contour, coherent driving of a…
Finite time Stückelberg interferometry with nanomechanical modes
Maximilian J. Seitner, Hugo Ribeiro, Johannes Kölbl +2
Stückelberg interferometry describes the interference of two strongly coupled modes during a double passage through an avoided energy level crossing. In this work, we experimentall…
Accelerated quantum control using superadiabatic dynamics in a solid-state lambda system
Brian B. Zhou, Alexandre Baksic, Hugo Ribeiro +7
Adiabatic evolutions find widespread utility in applications to quantum state engineering, geometric quantum computation, and quantum simulation. Although offering robustness to ex…
Classical Stückelberg interferometry of a nanomechanical two-mode system at room temperature
Maximilian J. Seitner, Hugo Ribeiro, Johannes Kölbl +3
The transition from classical to quantum mechanics has intrigued scientists in the past and remains one of the most fundamental conceptual challenges in state-of-the-art physics. B…
Nuclear Spin Diffusion Mediated by Heavy Hole Hyperfine Non-Collinear Interactions
Hugo Ribeiro, Franziska Maier, Daniel Loss
We show that the hyperfine mediated dynamics of heavy hole states confined in neutral self- assembled quantum dots leads to a nuclear spin diffusion mechanism. It is found that the…
Quantum limit for nuclear spin polarization in semiconductor quantum dots
Julia Hildmann, Eleftheria Kavousanaki, Guido Burkard +1
A recent experiment [E. A. Chekhovich et al., Phys. Rev. Lett. 104, 066804 (2010)] has demonstrated that high nuclear spin polarization can be achieved in self-assembled quantum do…
Interplay of charge and spin coherence in Landau-Zener-Stückelberg-Majorana interferometry
Hugo Ribeiro, J. R. Petta, Guido Burkard
We study Landau-Zener dynamics in a double quantum dot filled with two electrons, where the spin states can become correlated with charge states and the level velocity can be tuned…
Coherent Adiabatic Spin Control in the Presence of Charge Noise Using Tailored Pulses
Hugo Ribeiro, Guido Burkard, J. R. Petta +2
We study finite-time Landau-Zener transitions at a singlet-triplet level crossing in a GaAs double quantum dot, both experimentally and theoretically. Sweeps across the anticrossin…
Harnessing the GaAs quantum dot nuclear spin bath for quantum control
Hugo Ribeiro, J. R. Petta, Guido Burkard
We theoretically demonstrate that nuclear spins can be harnessed to coherently control two-electron spin states in a double quantum dot. Hyperfine interactions lead to an avoided c…
Nuclear State Preparation via Landau-Zener-Stueckelberg transitions in Double Quantum Dots
Hugo Ribeiro, Guido Burkard
We theoretically model a nuclear-state preparation scheme that increases the coherence time of a two-spin qubit in a double quantum dot. The two-electron system is tuned repeatedly…