34 research outputs found
Analysis of the radio-frequency single-electron transistor with large quality factor
We have analyzed the response and noise-limited sensitivity of the
radio-frequency single-electron transistor (RF-SET), extending the previously
developed theory to the case of arbitrary large quality factor Q of the RF-SET
tank circuit. It is shown that while the RF-SET response reaches the maximum at
Q roughly corresponding to the impedance matching condition, the RF-SET
sensitivity monotonically worsens with the increase of Q. Also, we propose a
novel operation mode of the RF-SET, in which an overtone of the incident rf
wave is in resonance with the tank circuit.Comment: 4 pages, submitted to Appl.Phys.Let
Numerical analysis of the radio-frequency single-electron transistor operation
We have analyzed numerically the response and noise-limited charge
sensitivity of a radio-frequency single-electron transistor (RF-SET) in a
non-superconducting state using the orthodox theory. In particular, we have
studied the performance dependence on the quality factor Q of the tank circuit
for Q both below and above the value corresponding to the impedance matching
between the coaxial cable and SET.Comment: 14 page