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RESEARCH PRODUCT
Quantum interference and the time-dependent radiation of nanojunctions
Michael RidleyRobert Van LeeuwenLev KantorovichRiku TuovinenRiku Tuovinensubject
CURRENTSElectromagnetic field116 Chemical sciencesFOS: Physical sciences02 engineering and technologyEffective radiated power114 Physical sciences01 natural sciencesCARBONELECTRONICSsymbols.namesake0103 physical sciencesMesoscale and Nanoscale Physics (cond-mat.mes-hall)OSCILLATIONSkvanttifysiikka010306 general physicsPHOTONICSPhysicsCondensed Matter - Mesoscale and Nanoscale Physicsnanoelektroniikkabusiness.industryBIOT-SAVARTsähkömagneettiset kentätCharge (physics)021001 nanoscience & nanotechnologyCondensed Matter::Mesoscopic Systems and Quantum Hall EffectTRANSPORT3. Good healthMagnetic fieldBiot–Savart lawMolecular geometryMaxwell's equationsQuantum electrodynamicsJUNCTIONsymbolsPhotonics0210 nano-technologybusinessdescription
Using the recently developed time-dependent Landauer-B\"uttiker formalism and Jefimenko's retarded solutions to the Maxwell equations, we show how to compute the time-dependent electromagnetic field produced by the charge and current densities in nanojunctions out of equilibrium. We then apply this formalism to a benzene ring junction, and show that geometry-dependent quantum interference effects can be used to control the magnetic field in the vicinity of the molecule. Then, treating the molecular junction as a quantum emitter, we demonstrate clear signatures of the local molecular geometry in the non-local radiated power.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-03-26 |