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UpTEMPO SIGNED

Ultrafast tunneling microscopy by optical field control of quantum currents

Total Cost €

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EC-Contrib. €

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Partnership

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 UpTEMPO project word cloud

Explore the words cloud of the UpTEMPO project. It provides you a very rough idea of what is the project "UpTEMPO" about.

nonlinear    probe    vi    designed    light    vacuum    infrared    femtosecond    imaging    experiments    electron    excite    junction    tunneling    maximum    wavefunctions    charge    independent    magnitude    profile    setup    nanojunctions    boundary    fact    fiber    net    er    semiconductors    sensitivity    solely    temporal    relies    coupled    packets    radiation    standard    exhibit    electronic    map    establishing    ultrabroadband    induce    pulses    guarantee    stm    pump    tip    precision    energies    generate    core    follows    resolution    basic    interval    optically    enhanced    single    currents    optics    combination    scanning    scheme    photoexcitation    cycle    onto    wave    impulsive    experimental    operate    dynamics    laser    resonantly    electric    molecules    sub    transport    atomic    optical    off    repetition    voltage    pulse    ultra    near    time    technique    few    mhz    rate    microscope    microscopy    direct    density    trains    locked    bias    cosine    stability    passively    ultrafast    nanosystems    coherent    evolution    mid    resonant    flow    orders    transition    harnessed   

Project "UpTEMPO" data sheet

The following table provides information about the project.

Coordinator
UNIVERSITE DU LUXEMBOURG 

Organization address
address: 2 AVENUE DE L'UNIVERSITE
city: ESCH-SUR-ALZETTE
postcode: 4365
website: http://wwwen.uni.lu

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Luxembourg [LU]
 Total cost 1˙999˙509 €
 EC max contribution 1˙999˙509 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2018-COG
 Funding Scheme ERC-COG
 Starting year 2019
 Duration (year-month-day) from 2019-09-01   to  2024-08-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITE DU LUXEMBOURG LU (ESCH-SUR-ALZETTE) coordinator 1˙999˙509.00

Map

 Project objective

The project aims at imaging electronic dynamics in molecules with atomic precision and sub-femtosecond temporal resolution. This result will be achieved by establishing new experiments at the boundary of ultrafast optics and scanning probe microscopy where the electric field of single-cycle light pulses is harnessed to control currents in nanojunctions. The basic concept relies on the fact that state-of-the-art femtosecond optical wave packets exhibit only one cycle of radiation with a defined electric field maximum. These pulses need to be phase locked to a “cosine-like” electric field profile. If such radiation is focused onto a junction with a nonlinear current-voltage characteristics, a net charge flow results solely due to the bias induced by the optical field. In detail, we want to exploit the time resolution provided by this new technique and induce electron transport at the probe tip of a scanning tunneling microscope (STM). The optical control of the current over a sub-optical-cycle interval will guarantee a temporal resolution better that one femtosecond, thus improving by several orders of magnitude what can be achieved with standard electronic bias. The core of the experimental system will be an ultrabroadband and passively phase-locked Er:fiber laser that is designed to generate single-cycle optical pulses in the near/mid-infrared, i.e. off resonant to the transition energies of III-V and II-VI semiconductors and large molecules. This laser will operate at 80-MHz repetition rate for enhanced sensitivity and stability when coupled to an ultra-high-vacuum STM. The setup will allow for the direct combination of independent pulse trains to resonantly excite few-femtosecond dynamics and then probe the electron density via the optically driven tunneling. In this pump-probe scheme it will be possible to map with atomic resolution the coherent evolution of electronic wavefunctions that in molecules and nanosystems follows an impulsive photoexcitation.

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The information about "UPTEMPO" are provided by the European Opendata Portal: CORDIS opendata.

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