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.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.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"]]

[["dc.bibliographiccitation.artnumber","FM4F.1"],["dc.contributor.author","Feist, Armin"],["dc.contributor.author","Priebe, Katharina E."],["dc.contributor.author","Rathje, Christopher"],["dc.contributor.author","Rittmann, Thomas"],["dc.contributor.author","Yalunin, Sergey Valerevich"],["dc.contributor.author","Hohage, Thorsten"],["dc.contributor.author","Schäfer, Sascha"],["dc.contributor.author","Ropers, Claus"],["dc.date.accessioned","2020-02-03T09:11:31Z"],["dc.date.available","2020-02-03T09:11:31Z"],["dc.date.issued","2018"],["dc.description.abstract","We demonstrate coherent control of free-electron momentum states in the longitudinal and transverse dimensions, including a temporal shaping of electron densities. A novel quantum state reconstruction scheme is employed to measure attosecond electron pulse trains."],["dc.identifier.doi","10.1364/CLEO_QELS.2018.FM4F.1"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62934"],["dc.language.iso","en"],["dc.publisher","OSA - The Optical Society"],["dc.publisher.place","Washington, D.C."],["dc.relation.conference","CLEO: QELS_Fundamental Science 2018"],["dc.relation.eventend","2018-05-18"],["dc.relation.eventlocation","San Jose, California United States"],["dc.relation.eventstart","2018-05-13"],["dc.relation.isbn","978-1-943580-42-2"],["dc.relation.ispartof","CLEO: QELS_Fundamental Science, part of CLEO: 2018 : 13-18 May 2018, San Jose, California, United States"],["dc.title","Quantum Coherent Transverse and Longitudinal Control for Attosecond Shaping of Free Electron Beams"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Reviews of Modern Physics"],["dc.bibliographiccitation.volume","92"],["dc.contributor.author","Dombi, Péter"],["dc.contributor.author","Pápa, Zsuzsanna"],["dc.contributor.author","Vogelsang, Jan"],["dc.contributor.author","Yalunin, Sergey Valerevich"],["dc.contributor.author","Sivis, Murat"],["dc.contributor.author","Herink, Georg"],["dc.contributor.author","Schäfer, Sascha"],["dc.contributor.author","Groß, Petra"],["dc.contributor.author","Ropers, Claus"],["dc.contributor.author","Lienau, Christoph"],["dc.date.accessioned","2020-07-20T14:16:38Z"],["dc.date.available","2020-07-20T14:16:38Z"],["dc.date.issued","2020"],["dc.description.abstract","The present status and development of strong-field nano-optics, an emerging field of nonlinear optics, is discussed. A nonperturbative regime of light-matter interactions is reached when the amplitude of the external electromagnetic fields that are driving a material approach or exceed the field strengths that bind the electrons inside the medium. In this strong-field regime, light-matter interactions depend on the amplitude and phase of the field, rather than its intensity, as in more conventional perturbative nonlinear optics. Traditionally such strong-field interactions have been intensely investigated in atomic and molecular systems, and this has resulted in the generation of high-harmonic radiation and laid the foundations for contemporary attosecond science. Over the past decade, however, a new field of research has emerged, the study of strong-field interactions in solid-state nanostructures. By using nanostructures, specifically those made out of metals, external electromagnetic fields can be localized on length scales of just a few nanometers, resulting in signficantly enhanced field amplitudes that can exceed those of the external field by orders of magnitude in the vicinity of the nanostructures. This leads not only to dramatic enhancements of perturbative nonlinear optical effects but also to significantly increased photoelectron yields. It resulted in a wealth of new phenomena in laser-solid interactions that have been discovered in recent years. These include the observation of above-threshold photoemission from single nanostructures, effects of the carrier-envelope phase on the photoelectron emission yield from metallic nanostructures, and strong-field acceleration of electrons in optical near fields on subcycle timescales. The current state of the art of this field is reviewed, and several scientific applications that have already emerged from the fundamental discoveries are discussed. These include, among others, the coherent control of localized electromagnetic fields at the surface of solid-state nanostructures and of free-electron wave packets by such optical near fields, resulting in the creation of attosecond electron bunches, the coherent control of photocurrents on nanometer length and femtosecond timescales by the electric field of a laser pulse, and the development of new types of ultrafast electron microscopes with unprecedented spatial, temporal, and energy resolution. The review concludes by highlighting possible future developments, discussing emerging topics in photoemission and potential strong-field nanophotonic devices, and giving perspectives for coherent ultrafast microscopy techniques. More generally, it is shown that the synergy between ultrafast science, plasmonics, and strong-field physics holds promise for pioneering scientific discoveries in the upcoming years."],["dc.identifier.doi","10.1103/RevModPhys.92.025003"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/67300"],["dc.language.iso","en"],["dc.relation.eissn","1539-0756"],["dc.relation.issn","0034-6861"],["dc.title","Strong-field nano-optics"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]