Atomtronics: Ultracold-atom analogs of electronic devices
- JILA, National Institute of Standards and Technology and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440 (United States)
Atomtronics focuses on atom analogs of electronic materials, devices, and circuits. A strongly interacting ultracold Bose gas in a lattice potential is analogous to electrons in solid-state crystalline media. As a consequence of the gapped many-body energy spectrum, cold atoms in a lattice exhibit insulatorlike or conductorlike properties. P-type and N-type material analogs are created by introducing impurity sites into the lattice. Current through an atomtronic wire is generated by connecting the wire to an atomtronic battery which maintains the two contacts at different chemical potentials. The design of an atomtronic diode with a strongly asymmetric current-voltage curve exploits the existence of superfluid and insulating regimes in the phase diagram. The atom analog of a bipolar junction transistor exhibits large negative gain. Our results provide the building blocks for more advanced atomtronic devices and circuits such as amplifiers, oscillators, and fundamental logic gates.
- OSTI ID:
- 20982166
- Journal Information:
- Physical Review. A, Vol. 75, Issue 2; Other Information: DOI: 10.1103/PhysRevA.75.023615; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ASYMMETRY
ATOMS
BOSE-EINSTEIN GAS
COMPARATIVE EVALUATIONS
CRYSTAL LATTICES
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRONS
ENERGY SPECTRA
JUNCTION TRANSISTORS
MANY-BODY PROBLEM
PHASE DIAGRAMS
POTENTIALS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR MATERIALS
SOLIDS
SUPERFLUIDITY
TEMPERATURE RANGE 0000-0013 K
TRANSISTOR AMPLIFIERS