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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.

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

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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