Yalunin, Sergey Valerevich

[["dc.contributor.author","Feist, Armin"],["dc.contributor.author","Yalunin, Sergey Valerevich"],["dc.contributor.author","Schäfer, Sascha"],["dc.contributor.author","Ropers, Claus"],["dc.date.accessioned","2020-05-29T09:51:23Z"],["dc.date.available","2020-05-29T09:51:23Z"],["dc.date.issued","2020"],["dc.identifier.arxiv","2003.01938"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/66023"],["dc.title","High-purity free-electron momentum states prepared by three-dimensional optical phase modulation"],["dc.type","preprint"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","08012"],["dc.contributor.author","Feist, Armin"],["dc.contributor.author","Priebe, Katharina E."],["dc.contributor.author","Rathje, Christopher"],["dc.contributor.author","Bach, Nora"],["dc.contributor.author","Rubiano da Silva, Nara"],["dc.contributor.author","Danz, Thomas"],["dc.contributor.author","Möller, Marcel"],["dc.contributor.author","Domröse, Till"],["dc.contributor.author","Rittmann, Thomas"],["dc.contributor.author","Yalunin, Sergey Valerevich"],["dc.contributor.author","Hohage, Thorsten"],["dc.contributor.author","Sivis, Murat"],["dc.contributor.author","Schäfer, Sascha"],["dc.contributor.author","Ropers, Claus"],["dc.date.accessioned","2020-05-15T12:39:40Z"],["dc.date.available","2020-05-15T12:39:40Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1051/epjconf/201920508012"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65455"],["dc.relation.conference","XXI International Conference on Ultrafast Phenomena 2018 (UP 2018)"],["dc.relation.eventend","2018-07-20"],["dc.relation.eventlocation","Hamburg"],["dc.relation.eventstart","2018-07-15"],["dc.relation.ispartof","XXI International Conference on Ultrafast Phenomena 2018 (UP 2018)"],["dc.title","Generation and attosecond shaping of high coherence free-electron beams for ultrafast TEM"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","200"],["dc.bibliographiccitation.issue","7551"],["dc.bibliographiccitation.journal","Nature"],["dc.bibliographiccitation.lastpage","+"],["dc.bibliographiccitation.volume","521"],["dc.contributor.author","Feist, Armin"],["dc.contributor.author","Echternkamp, Katharina E."],["dc.contributor.author","Schauss, Jakob"],["dc.contributor.author","Yalunin, Sergey V."],["dc.contributor.author","Schäfer, Sascha"],["dc.contributor.author","Ropers, Claus"],["dc.date.accessioned","2018-11-07T09:57:15Z"],["dc.date.available","2018-11-07T09:57:15Z"],["dc.date.issued","2015"],["dc.description.abstract","Coherent manipulation of quantum systems with light is expected to be a cornerstone of future information and communication technology, including quantum computation and cryptography(1). The transfer of an optical phase onto a quantum wavefunction is a defining aspect of coherent interactions and forms the basis of quantum state preparation, synchronization and metrology. Light-phase-modulated electron states near atoms and molecules are essential for the techniques of attosecond science, including the generation of extreme-ultraviolet pulses and orbital tomography(2,3). In contrast, the quantum-coherent phase-modulation of energetic free-electron beams has not been demonstrated, although it promises direct access to ultrafast imaging and spectroscopy with tailored electron pulses on the attosecond scale. Here we demonstrate the coherent quantum state manipulation of free-electron populations in an electron microscope beam. We employ the interaction of ultrashort electron pulses with optical nearfields(4-9) to induce Rabi oscillations in the populations of electron momentum states, observed as a function of the optical driving field. Excellent agreement with the scaling of an equal-Rabi multi-level quantum ladder is obtained(10), representing the observation of a light-driven 'quantum walk'(5) coherently reshaping electron density in momentum space(11). We note that, after the interaction, the optically generated superposition of momentum states evolves into a train of attosecond electron pulses. Our results reveal the potential of quantum control for the precision structuring of electron densities, with possible applications ranging from ultrafast electron spectroscopy and microscopy to accelerator science and free-electron lasers."],["dc.identifier.doi","10.1038/nature14463"],["dc.identifier.isi","000354377800054"],["dc.identifier.pmid","25971512"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/37119"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area A | A05 Nanoskalige Untersuchung raumzeitlicher Relaxation in heterogenen Systemen mit ultraschneller Transmissionselektronenmikroskopie"],["dc.relation.issn","1476-4687"],["dc.relation.issn","0028-0836"],["dc.title","Quantum coherent optical phase modulation in an ultrafast transmission electron microscope"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","UNSP 80"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Applied Physics B"],["dc.bibliographiccitation.volume","122"],["dc.contributor.author","Echternkamp, Katharina E."],["dc.contributor.author","Herink, Georg"],["dc.contributor.author","Yalunin, Sergey V."],["dc.contributor.author","Rademann, K."],["dc.contributor.author","Schaefer, S."],["dc.contributor.author","Ropers, Claus"],["dc.date.accessioned","2018-11-07T10:16:24Z"],["dc.date.available","2018-11-07T10:16:24Z"],["dc.date.issued","2016"],["dc.description.abstract","Metallic nanotips exhibit large electric field enhancements over an extremely broad bandwidth spanning from the optical domain down to static fields. They therefore constitute ideal model systems for the investigation of the inherent frequency scalings of highly nonlinear and strong-field phenomena. Here, we present a comprehensive study of strong-field photoemission from individual metallic nanotips. Combining high local fields and variable-wavelength mid-infrared pulses, we investigate electron dynamics governed by the nanoscale confinement of the optical near-field. In particular, we characterize a transition to sub-cycle, field-driven electron acceleration. The experimental findings are corroborated by semiclassical calculations within a two-step model."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft [SPP 1391, SFB 1073]"],["dc.identifier.doi","10.1007/s00340-016-6351-x"],["dc.identifier.isi","000372894600013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41031"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area A | A05 Nanoskalige Untersuchung raumzeitlicher Relaxation in heterogenen Systemen mit ultraschneller Transmissionselektronenmikroskopie"],["dc.relation.issn","1432-0649"],["dc.relation.issn","0946-2171"],["dc.title","Strong-field photoemission in nanotip near-fields: from quiver to sub-cycle electron dynamics"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","793"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Nature Photonics"],["dc.bibliographiccitation.lastpage","797"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Priebe, Katharina E."],["dc.contributor.author","Rathje, Christopher"],["dc.contributor.author","Yalunin, Sergey V."],["dc.contributor.author","Hohage, Thorsten"],["dc.contributor.author","Feist, Armin"],["dc.contributor.author","Schäfer, Sascha"],["dc.contributor.author","Ropers, Claus"],["dc.date.accessioned","2019-11-15T11:12:06Z"],["dc.date.available","2019-11-15T11:12:06Z"],["dc.date.issued","2017"],["dc.identifier.arxiv","1706.03680"],["dc.identifier.doi","10.1038/s41566-017-0045-8"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62634"],["dc.language.iso","en"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area A | A05 Nanoskalige Untersuchung raumzeitlicher Relaxation in heterogenen Systemen mit ultraschneller Transmissionselektronenmikroskopie"],["dc.relation.issn","1749-4885"],["dc.relation.issn","1749-4893"],["dc.relation.orgunit","Institut für Numerische und Angewandte Mathematik"],["dc.title","Attosecond electron pulse trains and quantum state reconstruction in ultrafast transmission electron microscopy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.lastpage","1"],["dc.contributor.author","Feist, Armin"],["dc.contributor.author","Rittmann, Thomas"],["dc.contributor.author","Harvey, Tyler"],["dc.contributor.author","Priebe, Katharina E."],["dc.contributor.author","Rathje, Christopher"],["dc.contributor.author","Kfir, Ofer"],["dc.contributor.author","Henke, Jan-Wilke"],["dc.contributor.author","Yalunin, Sergey Valerevich"],["dc.contributor.author","Schäfer, Sascha"],["dc.contributor.author","Ropers, Claus"],["dc.date.accessioned","2019-11-15T12:40:59Z"],["dc.date.available","2019-11-15T12:40:59Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1109/CLEOE-EQEC.2019.8872437"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62636"],["dc.notes.preprint","yes"],["dc.relation.conference","2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)"],["dc.relation.eventend","2019-06-27"],["dc.relation.eventlocation","München"],["dc.relation.eventstart","2019-06-23"],["dc.relation.isbn","978-1-7281-0469-0"],["dc.relation.iserratumof","yes"],["dc.title","Probing Nanoscale Optical Fields and Phase-Shaping Electron Beams by Inelastic Electron-Light Scattering"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","195426"],["dc.bibliographiccitation.issue","19"],["dc.bibliographiccitation.journal","PHYSICAL REVIEW B"],["dc.bibliographiccitation.volume","84"],["dc.contributor.author","Yalunin, Sergey Valerevich"],["dc.contributor.author","Gulde, Max"],["dc.contributor.author","Ropers, Claus"],["dc.date.accessioned","2018-11-07T08:49:57Z"],["dc.date.available","2018-11-07T08:49:57Z"],["dc.date.issued","2011"],["dc.description.abstract","The problem of highly nonlinear photoemission from a metal surface is considered using analytical and numerical approaches. Descriptions are found which cover both the weak-field and the strong-field regimes and the transition between them. The results of a time-dependent perturbation theory are in very good agreement with those from more numerically involved schemes, including a variational version of the Floquet method and a Crank-Nicolson-like numerical scheme. The implemented Crank-Nicolson variant uses transparent boundary conditions and an incident plane-wave state in the metal. Both numerical approaches give very similar results for weak and intermediate fields, while in the strong-field regime the Crank-Nicolson scheme is more effective than the Floquet method. We find an enhancement in the effective nonlinearity in the weak-field regime, which is caused by surface scattering of the final state. The presented theory also covers angular emission probabilities as a function of light intensity and explains an increase toward forward emission with growing field strength."],["dc.identifier.doi","10.1103/PhysRevB.84.195426"],["dc.identifier.isi","000296865800011"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/21577"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1098-0121"],["dc.title","Strong-field photoemission from surfaces: Theoretical approaches"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1203"],["dc.bibliographiccitation.issue","S3"],["dc.bibliographiccitation.journal","Microscopy and Microanalysis"],["dc.bibliographiccitation.lastpage","1204"],["dc.bibliographiccitation.volume","21"],["dc.contributor.author","Feist, Armin"],["dc.contributor.author","Echternkamp, Katharina E."],["dc.contributor.author","Schauss, Jakob"],["dc.contributor.author","Yalunin, Sergey Valerevich"],["dc.contributor.author","Schäfer, Sascha"],["dc.contributor.author","Ropers, Claus"],["dc.date.accessioned","2020-02-03T09:01:44Z"],["dc.date.available","2020-02-03T09:01:44Z"],["dc.date.issued","2015"],["dc.identifier.doi","10.1017/S1431927615006807"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62929"],["dc.language.iso","en"],["dc.relation.issn","1431-9276"],["dc.relation.issn","1435-8115"],["dc.title","Ultrafast Transmission Electron Microscopy with nanoscale Photoemitters"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","115408"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Physical Review. B"],["dc.bibliographiccitation.volume","93"],["dc.contributor.author","Schröder, Benjamin"],["dc.contributor.author","Ropers, Claus"],["dc.contributor.author","Yalunin, Sergey Valerevich"],["dc.date.accessioned","2020-12-10T18:20:24Z"],["dc.date.available","2020-12-10T18:20:24Z"],["dc.date.issued","2016"],["dc.description.abstract","We present an analytical description of the electron energy loss near plasmonic nanostructures with cylindrical symmetry as a three-step process: (i) electron-induced excitation of surface plasmon modes, (ii) their propagation and reflection, and (iii) the backaction on the electrons. The model incorporates relativistic effects, retardation, and light emission, and can treat arbitrary tilted electron trajectories. Convincing agreement with recent experimental data is demonstrated."],["dc.identifier.doi","10.1103/PhysRevB.93.115408"],["dc.identifier.eissn","2469-9969"],["dc.identifier.isi","000371734300006"],["dc.identifier.issn","2469-9950"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75552"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area C | C04 Untersuchung und Kontrolle photochemischer Reaktionen durch lokale optische Anregung im Rastertunnelmikroskop"],["dc.relation.issn","2469-9969"],["dc.relation.issn","2469-9950"],["dc.title","Theory of electron energy loss near plasmonic wires, nanorods, and cones"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.contributor.author","Feist, A."],["dc.contributor.author","Echternkamp, K. E."],["dc.contributor.author","Schauss, J."],["dc.contributor.author","Yalunin, Sergey Valerevich"],["dc.contributor.author","Schäfer, Sascha"],["dc.contributor.author","Ropers, Claus"],["dc.date.accessioned","2020-06-02T12:23:08Z"],["dc.date.available","2020-06-02T12:23:08Z"],["dc.date.issued","2015"],["dc.identifier.doi","10.1109/PN.2015.7292467"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/66059"],["dc.notes.preprint","yes"],["dc.relation.conference","2015 Photonics North"],["dc.relation.eventstart","2015"],["dc.relation.isbn","978-1-4673-6805-6"],["dc.relation.iserratumof","yes"],["dc.title","Quantum coherent interaction of electrons with optical near-fields in an ultrafast electron microscope"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]