Quantum interference in resonant tunneling and single spin measurements
arXiv:cond-mat/0406010 · doi:10.1109/TNANO.2004.840151
Abstract
We consider the resonant tunneling through a multi-level system. It is demonstrated that the resonant current displays quantum interference effects due to a possibility of tunneling through different levels. We show that the interference effects are strongly modulated by a relative phase of states carrying the current. This makes it possible to use these effects for measuring the phase difference between resonant states in quantum dots. We extend our model for a description of magnetotransport through the Zeeman doublets. It is shown that, due to spin-flip transitions, the quantum interference effects generate a distinct peak in the shot-noise power spectrum at the frequency of Zeeman splitting. This mechanism explains modulation in the tunneling current at the Larmor frequency observed in scanning tunneling microscope experiments and can be utilized for a single spin measurement.
Some corrections are made. This paper is based on work presented at the 2004 IEEE NTC Quantum Device Technology Workshop
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Cited by in corpus (15)
- Transport Statistics of Interacting Double Dot Systems: Coherent and Non-Markovian Effects
- Calculation of the current noise spectrum in mesoscopic transport: an efficient quantum master equation approach
- Full counting statistics of transport through two-channel Coulomb blockade systems
- Coherent effects in magneto-transport through Zeeman split levels
- Qubit measurements with a double-dot detector
- Quantum mechanical approach to decoherence and relaxation generated by fluctuating environment
- Resonance fluorescence in driven quantum dots: electron and photon correlations
- Steps and dips in the ac conductance and noise of mesoscopic structures
- Interference through quantum dots
- The role of the indirect tunneling processes and asymmetry in couplings in orbital Kondo transport through double quantum dots
- Kondo effects and shot noise enhancement in a laterally coupled double quantum dot
- Finite-frequency current (shot) noise in coherent resonant tunneling through a coupled-quantum-dot interferometer
- Phase and amplitude of Aharonov-Bohm oscillations in nonlinear three-terminal transport through a double quantum dot
- Magnetic-flux-controlled giant Fano factor for the coherent tunneling through a parallel double-quantum-dot
- Shot noise of charge and spin transport in a junction with a precessing molecular spin