Coherently Controlled Asymmetric Synthesis with Achiral Light

Shapiro, Moshe; Frishman, Einat; Brumer, Paul

doi:10.1103/physrevlett.84.1669

Cited by 164 publications

(195 citation statements)

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“…The possibility of achieving purification solely by optical means has been also theorized [5,6,7,8]. In particular, this goal could be realized via a "laser distillation" scheme [8], in which a repetitive use of three light pulses [9] gradually purifies the system.…”

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confidence: 99%

Two-Step Enantio-Selective Optical Switch

et al. 2003

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We present an optical "enantio-selective switch", that, in two steps, turns a ("racemic") mixture of left-handed and right-handed chiral molecules into the enantiomerically pure state of interest. The optical switch is composed of an "enantio-discriminator" and an "enantio-converter" acting in tandem. The method is robust, insensitive to decay processes, and does not require molecular preorientation. We demonstrate the method on the purification of a racemate of (transiently chiral) D2S2 molecules, performed on the nanosecond timescale.

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confidence: 99%

Two-Step Enantio-Selective Optical Switch

et al. 2003

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“…1(a)]. 7 Figure 1. (a) Laser synthesis scenario from a racemic mixture of spatially aligned enantiomers with the use of two laser pulses with frequencies ω 1 and ω 2 .…”

Section: Possible Scenarios For Preferential Laser Synthesis Of Enantmentioning

confidence: 99%

“…Such synthesis is called laser distillation and, as was shown first in Ref. 7, may be efficient for practical applications it is worth noting also that methods of coherent control of chiral states allow one to prepare the chiral states (left-and righthanded) in a coherent superposition, which can be seen as an implementation of a quantum bit of information (qubit); therefore, molecular chiral states can be, in general, used for the purpose of quantum information processing, 9 in contrast with the preferential selection schemes that turned out to be inefficient. 1 -6 Although the methods of coherent control of molecular states have been known for a long time, 10 -12 their applications for controlling molecular chiral states are just at the development stage.…”

Section: Introductionmentioning

confidence: 96%

Laser coherent control of molecular chiral states via entanglement of the rotational and torsional degrees of freedom

Bychkov

Grishanin

Zadkov

et al. 2002

J Raman Spectroscopy

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A new mechanism for controlling chiral states in simple chiral molecules with internal rotation, which employs the coherent quantum entanglement of the rotational-torsional states of the molecules, is proposed. It requires no preliminary spatial alignment of the molecules in a solution. A novel scenario for the preferential laser synthesis of enantiomers from a racemic solution of chiral molecules employing this new mechanism of inducing chirality is proposed and analyzed in detail and experimental scheme realizing this scenario is discussed. It is suggested that a non-linear optical activity coherent anti-Stokes Raman scattering (NOA-CARS) spectroscopic technique is used for both inducing the gyration wave in the medium (vapor) of chiral molecules and detecting this photoinduced gyration wave in the medium by registering the NOA-CARS signal. All numerical estimates are made for the hydrogen peroxide and deuterated hydrogen peroxide chiral molecules.

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“…-18]. Numerical results using N-level Hamiltonians under long pulses and wave-packet calculations in reduced (1 or 2)-dimensional models for short pulse dynamics have also shown great promise in the possibility of driving isomerization reactions [19][20][21][22][23][24][25][26][27][28][29][30][31] and even distinguishing optical isomers or purifying a racemate mixture [32][33][34][35][36][37][38][39][40][41][42][43][44]. The most general models of population transfer were applied.…”

Section: Introductionmentioning

confidence: 99%

Geometrical Optimization Approach to Isomerization: Models and Limitations

et al. 2017

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We study laser-driven isomerization reactions through an excited electronic state using the recently developed Geometrical Optimization procedure [J. Phys. Chem. Lett. 6, 1724Lett. 6, (2015]. The goal is to analyze whether an initial wave packet in the ground state, with optimized amplitudes and phases, can be used to enhance the yield of the reaction at faster rates, exploring how the geometrical restrictions induced by the symmetry of the system impose limitations in the optimization procedure. As an example we model the isomerization in an oriented 2,2'-dimethyl biphenyl molecule with a simple quartic potential. Using long (picosecond) pulses we find that the isomerization can be achieved driven by a single pulse. The phase of the initial superposition state does not affect the yield. However, using short (femtosecond) pulses, one always needs a pair of pulses to force the reaction. High yields can only be obtained by optimizing both the initial state, and the wave packet prepared in the excited state, implying the well known pump-dump mechanism.

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Coherently Controlled Asymmetric Synthesis with Achiral Light

Cited by 164 publications

References 10 publications

Two-Step Enantio-Selective Optical Switch

Two-Step Enantio-Selective Optical Switch

Laser coherent control of molecular chiral states via entanglement of the rotational and torsional degrees of freedom

Geometrical Optimization Approach to Isomerization: Models and Limitations

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