TY  - JOUR
AU  - Moro, Fabrizio
AU  - Turyanska, Lyudmila
AU  - Granwehr, Josef
AU  - Patanè, Amalia
TI  - Spin manipulation and spin-lattice interaction in magnetic colloidal quantum dots
JO  - Physical review / B
VL  - 90
IS  - 20
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2014-06182
SP  - 205428
PY  - 2014
AB  - We report on the spin-lattice interaction and coherent manipulation of electron spins in Mn-doped colloidal PbSquantum dots (QDs) by electron spin resonance.We show that the phase memory time, TM, is limited by Mn–Mndipolar interactions, hyperfine interactions of the protons (1H) on the QD capping ligands with Mn ions in theirproximity (<1 nm), and surface phonons originating from thermal fluctuations of the capping ligands. In the lowMn concentration limit and at low temperature, we achieve a long phase memory time constant TM ∼ 0.9μs,thus enabling the observation of Rabi oscillations. Our findings suggest routes to the rational design of magneticcolloidal QDs with phase memory times exceeding the current limits of relevance for the implementation of QDsas qubits in quantum information processing.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000345743000004
DO  - DOI:10.1103/PhysRevB.90.205428
UR  - https://juser.fz-juelich.de/record/172738
ER  -