Laser spectroscopy of individual quantum dots charged with a single hole
arXiv:1109.4392 · doi:10.1063/1.3665951
Abstract
We characterize the positively charged exciton (X1+) in single InGaAs quantum dots using resonant laser spectroscopy. Three samples with different dopant species (Be or C as acceptors, Si as a donor) are compared. The p-doped samples exhibit larger inhomogeneous broadening (x3) and smaller absorption contrast (x10) than the n-doped sample. For X1+ in the Be-doped sample, a dot dependent non-linear Fano effect is observed, demonstrating coupling to degenerate continuum states. However, for the C-doped sample the X1+ lineshape and saturation broadening follows isolated atomic transition behaviour. This C-doped device structure is useful for single hole spin initialization, manipulation, and measurement.
12 pages including 5 figures
References in corpus (8)
- Spin decoherence of a heavy hole coupled to nuclear spins in a quantum dot
- Coherent control and suppressed nuclear feedback of a single quantum dot hole qubit
- Observation of extremely slow hole spin relaxation in self-assembled quantum dots
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- Fast high fidelity hole spin initialization in a single InGaAs quantum dot
Cited by in corpus (6)
- High resolution coherent population trapping on a single hole spin in a semiconductor
- Strong Hyperfine-Induced Modulation of an Optically-Driven Hole Spin in an InAs Quantum Dot
- Approaching transform-limited photons from nanowire quantum dots excited above-band
- Magneto-optical spectroscopy of single charge-tunable InAs/GaAs quantum dots emitting at telecom wavelengths
- Generating indistinguishable photons from a quantum dot in a noisy environment
- Photocreation of a dark electron-hole pair in a quantum dot