Energetics of Microwaves Probed by Double Quantum Dot Absorption.

Autor:	Haldar S; NanoLund and Solid State Physics, Lund University, Box 118, 22100 Lund, Sweden., Havir H; NanoLund and Solid State Physics, Lund University, Box 118, 22100 Lund, Sweden., Khan W; NanoLund and Solid State Physics, Lund University, Box 118, 22100 Lund, Sweden.; Center for Analysis and Synthesis, Lund University, Box 124, 22100 Lund, Sweden., Lehmann S; NanoLund and Solid State Physics, Lund University, Box 118, 22100 Lund, Sweden., Thelander C; NanoLund and Solid State Physics, Lund University, Box 118, 22100 Lund, Sweden., Dick KA; NanoLund and Solid State Physics, Lund University, Box 118, 22100 Lund, Sweden.; Center for Analysis and Synthesis, Lund University, Box 124, 22100 Lund, Sweden., Maisi VF; NanoLund and Solid State Physics, Lund University, Box 118, 22100 Lund, Sweden.
Jazyk:	angličtina
Zdroj:	Physical review letters [Phys Rev Lett] 2023 Feb 24; Vol. 130 (8), pp. 087003.
DOI:	10.1103/PhysRevLett.130.087003
Abstrakt:	We explore the energetics of microwaves interacting with a double quantum dot photodiode and show wave-particle aspects in photon-assisted tunneling. The experiments show that the single-photon energy sets the relevant absorption energy in a weak-drive limit, which contrasts the strong-drive limit where the wave amplitude determines the relevant-energy scale and opens up microwave-induced bias triangles. The threshold condition between these two regimes is set by the fine-structure constant of the system. The energetics are determined here with the detuning conditions of the double dot system and stopping-potential measurements that constitute a microwave version of the photoelectric effect.
Databáze:	MEDLINE
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