Latched Detection of Excited States in an Isolated Double Quantum Dot
arXiv:cond-mat/0312717 · doi:10.1103/PhysRevB.71.115333
Abstract
Pulsed electrostatic gating combined with capacitive charge sensing is used to perform excited state spectroscopy of an electrically isolated double-quantum-dot system. The tunneling rate of a single charge moving between the two dots is affected by the alignment of quantized energy levels; measured tunneling probabilities thereby reveal spectral features. Two pulse sequences are investigated, one of which, termed latched detection, allows measurement of a single tunneling event without repetition. Both provide excited-state spectroscopy without electrical contact to the double-dot system.
arXiv commentrelated papers available at http://marcuslab.harvard.edu
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- Simultaneous readout of two charge qubits
- Nonequilibrium electron spin polarization in a double quantum dot. Lande mechanism