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13 papers · 2 filters
Doping of C-induced electronic states in BN nanopeapods
Vladimir Timoshevskii, Michel Cote
We report the results of \textit{ab initio} simulations of the electronic properties of a chain of C molecules encapsulated in a boron nitride nanotube - so called BN-nanope…
Damping of a nanomechanical oscillator strongly coupled to a quantum dot
Steven D. Bennett, Lynda Cockins, Yoichi Miyahara +2
We present theoretical and experimental results on the mechanical damping of an atomic force microscope cantilever strongly coupled to a self-assembled InAs quantum dot. When the c…
Inelastic Backaction due to Quantum Point Contact Charge Fluctuations
C. E. Young, A. A. Clerk
We study theoretically transitions of a double quantum-dot qubit caused by nonequilibrium charge fluctuations in a nearby quantum point contact (QPC) used as a detector. We show th…
Energy levels of few electron quantum dots imaged and characterized by atomic force microscopy
Lynda Cockins, Yoichi Miyahara, Steven D. Bennett +5
Strong confinement of charges in few electron systems such as in atoms, molecules and quantum dots leads to a spectrum of discrete energy levels that are often shared by several de…
Gate Adjustable Coherent Three and Four Level Mixing in a Vertical Quantum Dot Molecule
C. Payette, S. Amaha, T. Hatano +6
We study level mixing in the single particle energy spectrum of one of the constituent quantum dots in a vertical double quantum dot by performing magneto-resonant-tunneling spectr…
Scattering Mechanism in Modulation-Doped Shallow Two-Dimensional Electron Gases
D. Laroche, S. Das Sarma, G. Gervais +2
We report on a systematic investigation of the dominant scattering mechanism in shallow two-dimensional electron gases (2DEGs) formed in modulation-doped GaAs/Al_{x}Ga_{1-x}As hete…