Quantum noise in ac-driven resonant-tunneling double barrier structures: Photon-assisted tunneling vs. electron anti-bunching

Abstract

We study the quantum noise of electronic current in a double barrier system with a single resonant level. In the framework of the Landauer formalism we treat the double barrier as a quantum coherent scattering region that can exchange photons with a coupled electric field, e.g. a laser beam or a periodic ac-bias voltage. As a consequence of the manyfold parameters that are involved in this system, a complicated step-like structure arises in the non-symmetrized current-current auto correlation spectrum and a peak-like structure in the cross correlation spectrum with and without harmonic ac-driving. We present an analytic solution for these noise spectral functions by assuming a Breit-Wigner lineshape. In detail we study how the correlation functions are affected by photo-assisted tunneling (PAT) events and discuss the underlying elementary events of charge transfer where we identify a new kind of contribution to shot-noise. This enables us to clarify the influence of a not centered irradiation of such a structure with light in terms of contributions originating from different sets of coherent scattering channels. Moreover we show how the noise is influenced by acquiring a scattering phase due to the complex reflection amplitudes that are crucial in the Landauer approach.

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Cited by in corpus (14)

• Partition-free theory of time-dependent current correlations in nanojunctions in response to an arbitrary time-dependent bias
• Nonsymmetrized noise in a quantum dot: Interpretation in terms of energy transfer and coherent superposition of scattering paths
• Emission Noise in an Interacting Quantum Dot: Role of Inelastic Scattering and Asymmetric Coupling to the Reservoirs
• Emission Noise and High Frequency Cut-Off of the Kondo Effect in a Quantum Dot
• Zero-frequency noise in adiabatically driven, interacting quantum systems
• Mixed electrical-heat noise spectrum in a quantum dot
• Effects of Coulomb interaction on photon-assisted current noises through a quantum dot
• Scattering approach to frequency-dependent current noise in Fabry-Pérot graphene devices
• Quantum noise in carbon nanotubes as a probe of correlations in the Kondo regime
• Full counting statistics of ultrafast quantum transport
• Finite-frequency noise in a non-interacting quantum dot
• Non-classical current noise and light emission of an ac-driven tunnel junction
• Non-symmetrized quantum noise in a Kondo quantum dot
• Getting information from the mixed electrical-heat noise