The Simplest Double Slit: Interference and Entanglement in Double Photoionization of H
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Akoury, D.; Kreidi, K.; Jahnke, T.; Weber, Thorsten; Staudte, A.; Schöffler, M. S.; Neumann, N.; Titze, J.; Schmidt, L. Ph. H.; Czasch, A.; Jagutzki, O.; Fraga, R. A. Costa; Grisenti, R. E.; Muiño, R. Dı́ez; Cherepkov, N. A.; Semenov, S.; Ranitovic, Predrag; Cocke, C. L.; Osipov, T.; Adaniya, Hidehito; Thompson, J.C.; Prior, M. H.; Belkacem, A.; Landers, A. L.; Schmidt‐Böcking, H.; Dørner, R.

doi:10.1126/science.1144959

Cited by 246 publications

(224 citation statements)

References 33 publications

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“…The agreement between theory and experiment is very good. The oscillations observed in the N 2 photoionization cross sections as well as in other ionization processes involving homonuclear diatomic molecules [155][156][157][158][159][160][161][162][163][164] are the fingerprint of coherent two-center electron emission. Cohen and Fano gave in 1966 82 a physical interpretation of these oscillations in the case of H 2 photoionization by assuming that the 1sσ g and 1sσ u orbitals can be approximately written…”

Section: Core Photoionization At High Photon Energiesmentioning

confidence: 99%

Vibrational branching ratios in the photoelectron spectra of N2 and CO: interference and diffraction effects

Plésiat

Decleva

Martín

2012

Phys. Chem. Chem. Phys.

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Esta es la versión de autor del artículo publicado en: This is an author produced version of a paper published in: We present a detailed account of existing theoretical methods specially designed to provide vibrationally resolved photoionization cross sections of simple molecules within the Born-Oppenheimer approximation, with emphasis on newly developed methods based on density functional theory. The performance of these methods is shown for the case of N 2 and CO photoionization. Particular attention is paid to the region of high photon energies, where the electron wavelength is comparable to the bond length and, therefore, two-center interferences and diffraction are expected to occur. As shown in a recent work [Canton et al., Proc. Natl. Acad. Sci., 2011, 108, 73027306], the main experimental difficulty, which is to extract the relatively small diffraction features from the rapidly decreasing cross section, can be easily overcome by determining ratios of vibrationally resolved photoelectron spectra and existing theoretical calculations. From these ratios, one can thus get direct information about the molecular geometry. In this work, results obtained in a wide range of photon energies and for many different molecular orbitals of N 2 and CO are discussed and compared with the available experimental measurements. From this comparison, limitations and further possible improvements of the existing theoretical methods are discussed. The new results presented in the manuscript confirm that the conclusions reported in the above reference are of general validity.

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Section: Core Photoionization At High Photon Energiesmentioning

confidence: 99%

Vibrational branching ratios in the photoelectron spectra of N2 and CO: interference and diffraction effects

Plésiat

Decleva

Martín

2012

Phys. Chem. Chem. Phys.

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“…This is possible if ionization leads to fragmentation of the molecule and the electrons can be measured in coincidence with fragment ions recoiling in directions that directly reflect the molecular orientation at the moment of ionization, a condition often referred to as the axial recoil limit. Such coincidence methods have been applied successfully, predominantly to small molecules where synchrotron radiation removes an inner shell electron [6][7][8][9] but also to situations where valence electrons are removed by UV radiation [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Ionization of one- and three-dimensionally-oriented asymmetric-top molecules by intense circularly polarized femtosecond laser pulses

et al. 2011

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We present a combined experimental and theoretical study on strong-field ionization of a three-dimensionallyoriented asymmetric top molecule, benzonitrile (C 7 H 5 N), by circularly polarized, nonresonant femtosecond laser pulses. Prior to the interaction with the strong field, the molecules are quantum-state selected using a deflector and three-dimensionally (3D) aligned and oriented adiabatically using an elliptically polarized laser pulse in combination with a static electric field. A characteristic splitting in the molecular frame photoelectron momentum distribution reveals the position of the nodal planes of the molecular orbitals from which ionization occurs. The experimental results are supported by a theoretical tunneling model that includes and quantifies the splitting in the momentum distribution. The focus of the present article is to understand strong-field ionization from 3D-oriented asymmetric top molecules, in particular the suppression of electron emission in nodal planes of molecular orbitals. In the preceding article [Dimitrovski et al., Phys. Rev. A 83, 023405 (2011)] the focus is to understand the strong-field ionization of one-dimensionally-oriented polar molecules, in particular asymmetries in the emission direction of the photoelectrons.

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“…Different recent studies have realized the probably smallest double slits and analogs to this Einstein-Bohr debate using diatomic molecules as the diffraction elements in a photoionization process [24][25][26]. They were destroyed in the diffraction process and therefore were capable of car- rying away path information.…”

Section: Resultsmentioning

confidence: 99%

An atomically thin matter-wave beamsplitter

et al. 2015

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Matter-wave interferometry has become an essential tool in studies on the foundations of quantum physics [1] and for precision measurements [2][3][4][5][6]. Mechanical gratings have played an important role as coherent beamsplitters for atoms [7], molecules and clusters [8,9] since the basic diffraction mechanism is the same for all particles. However, polarizable objects may experience van der Waals shifts when they pass the grating walls [10,11] and the undesired dephasing may prevent interferometry with massive objects [12]. Here we explore how to minimize this perturbation by reducing the thickness of the diffraction mask to its ultimate physical limit, i.e. the thickness of a single atom. We have fabricated diffraction masks in single-layer and bilayer graphene as well as in 1 nm thin carbonaceous biphenyl membrane. We identify conditions to transform an array of single layer graphene nanoribbons into a grating of carbon nanoscrolls. We show that all these ultra-thin nanomasks can be used for high-contrast quantum diffraction of massive molecules. They can be seen as a nanomechanical answer to the question debated by Bohr and Einstein [13] whether a softly suspended double slit would destroy quantum interference. In agreement with Bohr's reasoning we show that quantum coherence prevails even in the limit of atomically thin gratings.

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The Simplest Double Slit: Interference and Entanglement in Double Photoionization of H ₂

Abstract: While, at the same time, the correlated momenta of the entangled electron pair continue to exhibit quantum interference.

Cited by 246 publications

References 33 publications

Vibrational branching ratios in the photoelectron spectra of N2 and CO: interference and diffraction effects

Vibrational branching ratios in the photoelectron spectra of N2 and CO: interference and diffraction effects

Ionization of one- and three-dimensionally-oriented asymmetric-top molecules by intense circularly polarized femtosecond laser pulses

An atomically thin matter-wave beamsplitter

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The Simplest Double Slit: Interference and Entanglement in Double Photoionization of H 2

Abstract: While, at the same time, the correlated momenta of the entangled electron pair continue to exhibit quantum interference.

Cited by 246 publications

References 33 publications

Vibrational branching ratios in the photoelectron spectra of N2 and CO: interference and diffraction effects

Vibrational branching ratios in the photoelectron spectra of N2 and CO: interference and diffraction effects

Ionization of one- and three-dimensionally-oriented asymmetric-top molecules by intense circularly polarized femtosecond laser pulses

An atomically thin matter-wave beamsplitter

Contact Info

Product

Resources

About

The Simplest Double Slit: Interference and Entanglement in Double Photoionization of H ₂