Principles of an atomtronic transistor
arXiv:1512.04422 · doi:10.1088/1367-2630/18/1/015012
Abstract
A semiclassical formalism is used to investigate the transistor-like behavior of ultracold atoms in a triple-well potential. Atom current flows from the source well, held at fixed chemical potential and temperature, into an empty drain well. In steady-state, the gate well located between the source and drain is shown to acquire a well-defined chemical potential and temperature, which are controlled by the relative height of the barriers separating the three wells. It is shown that the gate chemical potential can exceed that of the source and have a lower temperature. In electronics terminology, the source-gate junction can be reverse-biased. As a result, the device exhibits regimes of negative resistance and transresistance, indicating the presence of gain. Given an external current input to the gate, transistor-like behavior is characterized both in terms of the current gain, which can be greater than unity, and the power output of the device.
15 pages, 5 figures, accepted for publication in NJP
References in corpus (7)
- Experimental demonstration of painting arbitrary and dynamic potentials for Bose-Einstein condensates
- A high-accuracy algorithm for designing arbitrary holographic atom traps
- Negative differential conductivity in an interacting quantum gas
- Integrated coherent matter wave circuits
- Spin Field Effect Transistors with Ultracold Atoms
- Matter wave scattering on an amplitude-modulated optical lattice
- Numerical model for atomtronic circuit analysis
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