3 papers
cond-mat.mes-hall2021
Magnetic gradient free two axis control of a valley spin qubit in SiGe
Y. -Y. Liu, L. A. Orona, Samuel F. Neyens +3
Spins in SiGe quantum dots are promising candidates for quantum bits but are also challenging due to the valley degeneracy which could potentially cause spin decoherence and weak s…
cond-mat.mes-hall2021
Radio frequency reflectometry in silicon-based quantum dots
Y. -Y. Liu, S. G. J. Philips, L. A. Orona +6
RF reflectometry offers a fast and sensitive method for charge sensing and spin readout in gated quantum dots. We focus in this work on the implementation of RF readout in accumula…
cond-mat.mes-hall2018
Readout Of Singlet-Triplet Qubits At Large Magnetic Field Gradients
Lucas A. Orona, John M. Nichol, Shannon P. Harvey +5
Visibility of singlet-triplet qubit readout is reduced to almost zero in large magnetic field gradients due to relaxation processes. Here we present a new readout technique that is…