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We show that congruent electric, magnetic and non-resonant optical fields acting concurrently on a polar paramagnetic (and polarisable) molecule offer possibilities to both amplify and control the directionality of the ensuing molecular…

Chemical Physics · Physics 2016-01-12 Ketan Sharma , Bretislav Friedrich

The mixed-field orientation of an asymmetric-rotor molecule with its permanent dipole moment non-parallel to the principal axes of polarizability is investigated experimentally and theoretically. We find that for the typical case of a…

We show that combined permanent and induced electric dipole interactions of polar and polarizable molecules with collinear electric fields lead to a sui generis topology of the corresponding Stark energy surfaces and of other observables -…

Chemical Physics · Physics 2023-02-09 Burkhard Schmidt , Bretislav Friedrich

We use an optical centrifuge to align asymmetric top $\mathrm{SO_2}$ molecules by adiabatically spinning their most polarizable O-O axis. The effective centrifugal potential in the rotating frame confines sulfur atoms to the plane of the…

Chemical Physics · Physics 2016-05-11 A. Korobenko , V. Milner

We show that the electric dipole-dipole interaction between a pair of polar molecules undergoes an all-out transformation when superimposed by a far-off resonant optical field. The combined interaction potential becomes tunable by variation…

Atomic Physics · Physics 2015-05-30 Mikhail Lemeshko , Bretislav Friedrich

We examine the potential-energy curves and polarization of the dipole moments of two static polar molecules under the influence of an external dc electric field and their anisotropic dipole-dipole interaction. We model the molecules as…

Quantum Physics · Physics 2024-09-24 Felipe Isaule , Robert Bennett , Jörg B. Götte

We made use of supersymmetric (SUSY) quantum mechanics to find a condition under which the Stark effect problem for a polar and polarizable closed-shell diatomic molecule subject to collinear electrostatic and nonresonant radiative fields…

Chemical Physics · Physics 2011-06-24 Mikhail Lemeshko , Mustafa Mustafa , Sabre Kais , Bretislav Friedrich

The induced polarization of a beam of polar clusters or molecules passing through an electric or magnetic field region differs from the textbook Langevin-Debye susceptibility. This distinction, which is important for the interpretation of…

Atomic and Molecular Clusters · Physics 2008-07-09 J. Bulthuis , J. A. Becker , R. Moro , V. V. Kresin

Proposals for quantum computing using rotational states of polar molecules as qubits have previously considered only diatomic molecules. For these the Stark effect is second-order, so a sizable external electric field is required to produce…

Quantum Physics · Physics 2015-05-30 Qi Wei , Sabre Kais , Bretislav Friedrich , Dudley Herschbach

The properties of molecule-optical elements such as lenses or prisms based on the interaction of molecules with optical fields depend in a crucial way on the molecular quantum state and its alignment created by the optical field. However,…

Chemical Physics · Physics 2016-08-02 Lee Yeong Kim , Ju Hyeon Lee , Hye Ah Kim , Sang Kyu Kwak , Bretislav Friedrich , Bum Suk Zhao

We present a theoretical study of recent laser-alignment and mixed-field-orientation experiments of asymmetric top molecules. In these experiments, pendular states were created using linearly polarized strong ac electric fields from pulsed…

A class of bistable "stator-rotor" molecules is proposed, where a stationary bridge (stator) connects the two electrodes and facilitates electron transport between them. The rotor part, which has a large dipole moment, is attached to an…

Soft Condensed Matter · Physics 2009-11-07 P. E. Kornilovitch , A. M. Bratkovsky , R. S. Williams

We explore the possibility of forming a oriented polar molecule directly from a pair of colliding atoms. The process comprises the photoassociation and vibrational stabilization along with the molecular orientation. These processes are…

Quantum Physics · Physics 2026-01-14 Murilo D. Forlevesi , Edson Denis Leonel , Emanuel F. de Lima

We theoretically consider the phenomenon of field-free long-lasting orientation of symmetric-top molecules ionized by two-color laser pulses. The anisotropic ionization produces a significant long-lasting orientation of the surviving…

Chemical Physics · Physics 2023-03-08 Long Xu , Ilia Tutunnikov , Yehiam Prior , Ilya Sh. Averbukh

Impulsive orientation of symmetric-top molecules excited by two-color femtosecond pulses is considered. In addition to the well-known transient orientation appearing immediately after the pulse and then reemerging periodically due to…

Optics · Physics 2021-07-22 Long Xu , Ilia Tutunnikov , Yehiam Prior , Ilya Sh. Averbukh

Entanglement generated from polar molecules of two-dimensional rotation is investigated in a static electric field. The electric field modulates the rotational properties of molecules, leading to distinctive entanglement. The concurrence is…

Quantum Physics · Physics 2017-11-22 Ying-Yen Liao

Molecular rotation spectra, generated by the coupling of the molecular electric-dipole moments to an external time-dependent electric field, are discussed in a few particular conditions which can be of some experimental interest. First, the…

Other Condensed Matter · Physics 2015-12-15 M. Apostol , L. C. Cune

We report a theoretical study of electron transport along helical molecules under an external electric field, which is perpendicular to the helix axis of the molecule. Our results reveal that the topological states could appear in…

Mesoscale and Nanoscale Physics · Physics 2017-04-19 Ai-Min Guo , Qing-Feng Sun

We have experimentally and theoretically investigated the mixed-field orientation of rotational-state-selected OCS molecules and we achieve strong degrees of alignment and orientation. The applied moderately intense nanosecond laser pulses…

We present a theoretical study of the mixed-field-orientation of asymmetric top molecules in tilted static electric field and non-resonant linearly polarized laser pulse by solving the time-dependent Schr\"odinger equation. Within this…

Chemical Physics · Physics 2016-12-21 Juan J. Omiste , Rosario González-Férez
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