Journal Article

FZJ-2014-06182

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Spin manipulation and spin-lattice interaction in magnetic colloidal quantum dots

Moro, F. (Corresponding Author) ; Turyanska, L. ; Granwehr, J.FZJ* ; Patanè, A.

2014
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/8327  doi:10.1103/PhysRevB.90.205428

Abstract: 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.

Keyword(s): Condensed Matter Physics (2nd)

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Contributing Institute(s):

1. Grundlagen der Elektrochemie (IEK-9)

Research Program(s):

1. 123 - Fuel Cells (POF2-123) (POF2-123)

Appears in the scientific report 2014

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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