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Efficient Low-Noise Single Electron Source Theory

Learn about minimizing noise generation when exciting single particles, using Lorentzian pulses at the barrier for suppressed equilibrium noise. Dive into full counting statistics theory, understanding current, noise, and more. Discover a smooth method for barrier opening for a reliable source at low temperatures.

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Efficient Low-Noise Single Electron Source Theory

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  1. Low Noise Single Electron Source Jin Zhang , Y. Sherkunov, N. d’Ambrumenil, B. Muzykantskii University of Warwick, U.K.

  2. Noise Generation T Minimized when Single particle excitation: Ivanov et.al, 1997 for abrupt opening T ? T 0 0 t t

  3. Minimize Equilibrium Noise 1. Single Lorentzianpulse to the barrier 2. Double Lorentzian pulses to the barrier when

  4. Single Electron Sourcewith Suppressed Equilibrium Noise Total noise due to an MES: Probability Distribution arXiv:0812.4433v3YS JZ NdA BM

  5. Theory onFull Counting Statistics (I) Characteristic Function Current, Noise, etc... Understood with density matrix of outgoing states:

  6. Theory onFull Counting Statistics (II) Abanovet.al 2008

  7. Conclusion • We proposed a smooth way to open the barrier, which could be used as a single electron source at low temperatures without divergent equilibrium noise.

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