CRISTOBAL PEREZ AMANDA L STEBER SERGIO R DOMINGOS ANNA KRIN DAVID SCHMITZ MELANIE SCHNELL MaxPlanck Institute for the Structure a nd Dynamics of Matter Hamburg ID: 632589
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COHERENT POPULATION TRANSFER IN CHIRAL MOLECULES USING TAILORED MICROWAVE PULSESCRISTOBAL PEREZ, AMANDA L. STEBER, SERGIO R. DOMINGOS, ANNA KRIN, DAVID SCHMITZ, MELANIE SCHNELL. Max-Planck-Institute for the Structure and Dynamics of Matter, Hamburg, Germany.Slide2
Three-wave mixing2S-carvoneR-carvone
D. Patterson, M. Schnell, J.M. Doyle
,
Nature.
497
, 475 (2013)
D. Patterson, J.M. Doyle,
Phys.
Rev
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111
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Cycle
of
three
dipole-allowed
transitions (a-, b- and c-
type
) between
rotational
states
Two orthogonally polarized resonant
fileds
Third mutually orthogonal field encoding the chiral signal and shifted 180 degrees between enantiomers
Mirror reflection: sign of mambmc changesSlide3
Three-wave mixing3
Broadcast horn
Recording horn
RF electrode
Ground electrode
AWG
TWT Amp
RF Amp
V. A. Shubert et al. J
. Chem. Phys.
142
, 214201 (2015)
LN AmpSlide4
Three-wave mixing4Unambiguous differentiation of enantiomers in the time domain.Determination of the enantiomeric excess (Signal proportional to EE)Reference samples of know EEAbsolute configuration from the phase of the observed signal.Careful measurement of the phase will allow for absolute configuration determinationEnantiomeric-selective population transfer.Slide5
Three-wave mixing and Population Transfer5
Population
evolution
I
II
IIISlide6
6
Dual polarization
horn
Recording horn
RF electrode
Ground electrode
AWG
TWT Amp
RF Amp
SSA
2w
Three-wave mixing and Population
T
ransfer
Switch
LN AmpSlide7
7Three-wave mixing and Population Transfer1 photon2 +1 photonsInterference3 photonsPopulationTransfer
RAP pulseSlide8
8Three-wave mixing and Population TransferEnantiomer in excessEE determinationDetection of weak 3w-mixing signalsSlide9
Population Transfer9Slide10
Summary and Future Experiments10Basic application of three-wave mixing experiments for population transferPopulation enrichment of 6% vs 0.6% in a buffer-gas cell.More sophisticated pulse sequences to increase the enrichment.Expand the frequency range up to 12GHz for all involved transitions. (50MHz-12GHz)Enantiomer enrichment in racemic mixtures of molecular complexes.Slide11
AcknowledgementThank you for your attention!
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