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.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"]]

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[["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","L032036"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Physical Review Research"],["dc.bibliographiccitation.lastpage","7"],["dc.bibliographiccitation.volume","3"],["dc.contributor.author","Yalunin, Sergey V."],["dc.contributor.author","Feist, Armin"],["dc.contributor.author","Ropers, Claus"],["dc.date.accessioned","2021-12-01T10:55:35Z"],["dc.date.available","2021-12-01T10:55:35Z"],["dc.date.issued","2021-03-19"],["dc.description.abstract","Temporally shaping the density of electron beams using light forms the basis for a wide range of established and emerging technologies, including free-electron lasers and attosecond electron microscopy. The modulation depth of compressed electron pulses is a key figure of merit limiting applications. In this work, we present an approach for generating background-free attosecond electron pulse trains by sequential inelastic electron-light scattering. Harnessing quantum interference in the fractional Talbot effect, we suppress unwanted background density in electron compression by several orders of magnitude. Our results will greatly enhance applications of coherent electron-light scattering, such as stimulated cathodoluminescence and streaking."],["dc.identifier.arxiv","2103.10921v2"],["dc.identifier.doi","10.1103/PhysRevResearch.3.L032036"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/94900"],["dc.language.iso","en"],["dc.relation","SFB 1456: Mathematik des Experiments: Die Herausforderung indirekter Messungen in den Naturwissenschaften"],["dc.relation","SFB 1456 | Cluster C | C01: Density matrix reconstructions in ultrafast free electron optics"],["dc.relation.issn","2643-1564"],["dc.rights","CC BY 4.0"],["dc.title","Tailored high-contrast attosecond electron pulses for coherent excitation and scattering"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["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.artnumber","17293457"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.lastpage","1"],["dc.contributor.author","Priebe, Katharina E."],["dc.contributor.author","Yalunin, Sergey Valerevich"],["dc.contributor.author","Rathje, Christopher"],["dc.contributor.author","Feist, Armin"],["dc.contributor.author","Schäfer, Sascha"],["dc.contributor.author","Ropers, Claus"],["dc.date.accessioned","2020-02-03T08:52:17Z"],["dc.date.available","2020-02-03T08:52:17Z"],["dc.date.issued","2017"],["dc.description.abstract","Summary form only given. Ultrafast transmission electron microscopy is a promising laser-pump electron-probe technique, which allows for studying ultrafast dynamics with both high spatial and temporal resolution [1]. Besides, the high spatial and temporal coherence of the pulsed electron beam enables a coherent manipulation of the free-electron quantum state [2] by inelastic scattering in optical near-fields [3-5]. Upon traversal of an intense optical near-field, the free-electron kinetic energy spectrum develops sidebands that are separated by the photon energy, which can be attributed to a sinusoidal phase modulation of the electron wavefunction. This coherent electron-light interaction opens up the new research field of free-electron quantum optics.In this contribution, we discuss the results and applications of two experiments [6,7] featuring the coherent interaction with dual near-fields that differ in position (a) or in frequency (b). Fig. 1a illustrates the first experimental scheme: The electron beam sequentially interacts with two phase-locked optical near-fields, separated by a few micrometres in space. The final electron energy distribution sensitively depends on the relative phase between the two fields, which can be precisely controlled. The cancellation or enhancement of the first phase modulation by the second, i.e. its reversibility demonstrates the quantum coherence of this process. This experimental geometry represents a free-electron analogue of a Ramsey interferometer scheme [8]."],["dc.identifier.doi","10.1109/CLEOE-EQEC.2017.8087599"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62925"],["dc.language.iso","en"],["dc.publisher","IEEE"],["dc.relation.conference","2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)"],["dc.relation.eventend","2017-06-29"],["dc.relation.eventlocation","Munich, Germany"],["dc.relation.eventstart","2017-06-25"],["dc.relation.isbn","978-1-5090-6736-7"],["dc.relation.ispartof","2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)"],["dc.title","Controlling the quantum state of free electrons by inelastic optical near-field scattering"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]