Designing quantum dots for solotronics

Abstract

Solotronics, optoelectronics based on solitary dopants, is an emerging field of research and technology reaching the ultimate limit of miniaturization. It aims at exploiting quantum properties of individual ions or defects embedded in a semiconductor matrix. As already shown, optical control of a spin of a magnetic ion is feasible employing photo-generated carriers confined in a quantum dot. A non-radiative recombination, regarded as a severe problem, limited development of quantum dots with magnetic ions. Our photoluminescence studies on, so far unexplored, individual CdTe dots with single cobalt ions and individual CdSe dots with single manganese ions show, however, that even if energetically allowed, the single ion related non-radiative recombination is negligible in such zero-dimensional structures. This opens solotronics for a wide range of even not yet considered systems. Basing on the results of our single spin relaxation experiments and on the material trends, we identify optimal magnetic ion-quantum dot systems for implementation of a single-ion based spin memory.

Main text and supplementary information: 15 pages, 6 figures, 3 tables

References in corpus (9)

• Tunable magnetic exchange interactions in manganese-doped inverted core/shell ZnSe/CdSe nanocrystals
• Optically probing the fine structure of a single Mn atom in an InAs quantum dot
• Effect of the s,p-d exchange interaction on the excitons in (Zn,Co)O epilayers
• Single Electron Transport in electrically tunable nanomagnets
• Brightening of dark excitons in a single quantum dot containing a single magnetic ion
• In-plane radiative recombination channel of a dark exciton in self-assembled quantum dots
• Magnetic polaron formation and exciton spin relaxation in single CdMnTe quantum dots
• Magnetization dynamics down to zero field in dilute (Cd,Mn)Te quantum wells
• Electron-nuclei spin dynamics in II-VI semiconductor quantum dots

Cited by in corpus (42)

• Families of magnetic semiconductors -- an overview
• Magnetic Ground State of an Individual Fe2+ Ion in Strained Semiconductor Nanostructure
• Light-hole transitions in quantum dots: realizing full control by highly focused optical-vortex beams
• Direct Measurements of Magnetic Polarons in Cd${}_{1-x}$Mn${}_x$Se Nanocrystals from Resonant Photoluminescence
• Individual Cr atom in a semiconductor quantum dot: optical addressability and spin-strain coupling
• Coherent precession of an individual 5/2 spin
• Strain induced coherent dynamics of coupled carriers and Mn spins in a quantum dot
• Strong coupling and polariton lasing in Te based microcavities embedding (Cd,Zn)Te quantum wells
• Dynamics of a Mn spin coupled to a single hole confined in a quantum dot
• Time-resolved magnetophotoluminescence studies of magnetic polaron dynamics in type-II quantum dots
• Long-range p-d exchange interaction in a ferromagnet-semiconductor Co/CdMgTe/CdTe quantum well hybrid structure
• Origin of luminescence quenching in structures containing CdSe/ZnSe quantum dots with a few Mn${}^{2+}$ ions
• Spin dynamics of an individual Cr atom in a semiconductor quantum dot under optical excitation
• MBE grown microcavities based on selenium and tellurium compounds
• Direct determination of zero-field splitting for single Co${}^{2+}$ ion embedded in a CdTe/ZnTe quantum dot
• Optically controlled spin-polarization memory effect on Mn delta-doped heterostrucutres
• Resonant optical control of the spin of a single Cr atom in a quantum dot
• A hole-Cr${}^{+}$ nano-magnet in a semiconductor quantum dot
• Introducing single Mn2+ ions into spontaneously coupled quantum dot pairs
• Comparison of magneto-optical properties of various excitonic complexes in CdTe and CdSe self-assembled quantum dots
• Optical control of an individual Cr spin in a semiconductor quantum dot
• Resonant photoluminescence and dynamics of a hybrid Mn-hole spin in a positively charged magnetic quantum dot
• Fine structure of an exciton coupled to a single Fe2+ ion in a CdSe/ZnSe quantum dot
• Coherent dynamics of a single Mn-doped quantum dot revealed by four-wave mixing spectroscopy
• Effect of electron-hole separation on optical properties of individual Cd(Se,Te) Quantum Dots
• Single-color, in situ photolithography marking of individual CdTe/ZnTe Quantum Dots containing a single Mn2+ ion
• Angle-resolved optically detected magnetic resonance as a tool for strain determination in nanostructures
• Charge fluctuations of a Cr atom probed in the optical spectra of a quantum dot
• Epitaxial growth and Photoluminescence Excitation spectroscopy of CdSe Quantum Dots in (Zn,Cd)Se barrier
• CdSe/ZnSe quantum dot with a single Mn${}^{2+}$ ion - a new system for a single spin manipulation
• Light-hole exciton mixing and dynamics in Mn-doped quantum dots
• Single vanadium ion magnetic dopant in an individual CdTe/ZnTe quantum dot
• Anisotropy of in-plane hole g-factor in CdTe/ZnTe quantum dots
• Coupling of the triplet states of a negatively charged exciton in a quantum dot with the spin of a magnetic atom
• Spin dynamics of positively charged excitons in Cr${}^{+}$-doped quantum dots probed by resonant photoluminescence
• Deterministic photon storage and readout in a semimagnetic quantum-dot--cavity system doped with a single Mn ion
• Non-equilibrium Green's functions and their relation to the negative differential conductance in the interacting resonant level model
• Mechanisms of optical orientation of an individual Mn${}^{2+}$ ion spin in a II-VI quantum dot
• Exchange interaction-driven dynamic nuclear polarization in Mn-doped InGaAs/GaAs quantum dots
• Readout of a dopant spin in the anisotropic quantum dot with a single magnetic ion
• Excitonic Zeeman Splittings in Colloidal CdSe Quantum Dots Doped with Single Magnetic Impurities
• Magnetic-field-induced abrupt spin state transition in a quantum dot containing magnetic ions