88 citations · 206 across the 11 of their papers we have counts for
11 papers
Voltage-controlled electron tunnelling from a single self-assembled quantum dot embedded in a two-dimensional-electron-gas-based photovoltaic cell
J. D. Mar, X. L. Xu, J. J. Baumberg +3
We perform high-resolution photocurrent (PC) spectroscopy to investigate resonantly the neutral exciton ground-state (X0) in a single InAs/GaAs self-assembled quantum dot (QD) embe…
Ultrafast optical spin echo for electron spins in semiconductors
Susan M. Clark, Kai-Mei C. Fu, Qiang Zhang +3
Spin-based quantum computing and magnetic resonance techniques rely on the ability to measure the coherence time, T2, of a spin system. We report on the experimental implementation…
Millisecond spin-flip times of donor-bound electrons in GaAs
Kai-Mei C. Fu, Wenzheng Yeo, Susan Clark +4
We observe millisecond spin-flip relaxation times of donor-bound electrons in high-purity n-GaAs . This is three orders of magnitude larger than previously reported lifetimes in n-…
Coherent Population Trapping of Electron Spins in a Semiconductor
Kai-Mei C. Fu, Charles Santori, Colin Stanley +2
In high-purity n-type GaAs under strong magnetic field, we are able to isolate a lambda system composed of two Zeeman states of neutral-donor bound electrons and the lowest Zeeman…
Optical modulation at around 1550 nm in a InGaAlAs optical waveguide containing a InGaAs/AlAs resonant tunnelling diode
J. M. L. Figueiredo, A. R. Boyd, C. R. Stanley +3
We report electro-absorption modulation of light at around 1550 nm in a unipolar InGaAlAs optical waveguide containing a InGaAs/AlAs double-barrier resonant tunneling diode (DB-RTD…
Optical modulation in a resonant tunneling relaxation oscillator
J. M. L. Figueiredo, C. R. Stanley, A. R. Boyd +1
We report high speed optical modulation in a resonant tunneling relaxation oscillator consisting of a resonant tunneling diode (RTD) integrated with a unipolar optical waveguide an…