14.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR1.6k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.4k papers
- Heidelberg UniversityDE1.3k papers
- Max Planck SocietyDE1.1k papers
- University of ZurichCH1.1k papers
- European Organization for Nuclear ResearchCH1k papers
- Laboratoire de Physique Nucléaire et de Hautes ÉnergiesFR990 papers
- Institute of Nuclear Physics, Polish Academy of SciencesPL973 papers
- University of Maryland, College ParkUS940 papers
- Rutherford Appleton LaboratoryGB939 papers
- Institute for Nuclear ResearchRU922 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT912 papers
17 papers · 2 filters
Gravitational and Relativistic Deflection of X-Ray Superradiance
Wen-Te Liao, Sven Ahrens
Exploring Einstein's theories of relativity in quantum systems, for example by using atomic clocks at high speeds can deepen our knowledge in physics. However, many challenges stil…
Interferometric phase detection at x-ray energies via Fano resonance control
K. P. Heeg, C. Ott, D. Schumacher +4
Modern x-ray light sources promise access to structure and dynamics of matter in largely unexplored spectral regions. However, the desired information is encoded in the light inten…
Quantum dynamics of a two-level emitter with modulated transition frequency
Mihai Macovei, Christoph H. Keitel
The resonant quantum dynamics of an excited two-level emitter is investigated via classical modulation of its transition frequency while simultaneously the radiator interacts with…
Relativistic tunneling picture of electron-positron pair creation
Anton Wöllert, Michael Klaiber, Heiko Bauke +1
The common tunneling picture of electron-positron pair creation in a strong electric field is generalized to pair creation in combined crossed electric and magnetic fields. This en…
Electron-spin dynamics in elliptically polarized light waves
Heiko Bauke, Sven Ahrens, Rainer Grobe
We investigate the coupling of the spin angular momentum of light beams with elliptical polarization to the spin degree of freedom of free electrons. It is shown that this coupling…
Tunable sub-luminal propagation of narrowband x-ray pulses
K. P. Heeg, J. Haber, D. Schumacher +9
Group velocity control is demonstrated for x-ray photons of 14.4 keV energy via a direct measurement of the temporal delay imposed on spectrally narrow x-ray pulses. Sub-luminal li…
Tunneling dynamics in multiphoton ionization and attoclock calibration
M. Klaiber, K. Z. Hatsagortsyan, C. H. Keitel
The intermediate domain of strong-field ionization between the tunneling and the multiphoton regimes is investigated using the strong field approximation and the imaginary-time met…
Probing few-excitation eigenstates of interacting atoms on a lattice by observing their collective light emission in the far field
P. Longo, J. Evers
The collective emission from a one-dimensional chain of interacting two-level atoms coupled to a common electromagnetic reservoir is investigated. We derive the system's dissipativ…
Cavity-output-field control via interference effects
Viorel Ciornea, Mihai A. Macovei
We show how interference effects are responsible for manipulating the output electromagnetic field of an optical micro-resonator in the good-cavity limit. The system of interest co…
Magnetic Quantum-Phase Control between Two Entangled Macroscopic Nuclear Ensembles
Wen-Te Liao, Christoph H. Keitel, Adriana Pálffy
Heralded generation and manipulation of quantum entanglement between two macroscopic and spatially separated crystals at room temperature is theoretically studied. We show that by…
Temporal dynamics of stimulated emission with applications in nuclear quantum optics
Andreas Reichegger, Jörg Evers
The temporal dynamics of stimulated emission is studied, with the particular emphasis on stimulated emission induced by x-ray pulses interacting with nuclei. In typical nuclear for…
Controllable linear -phase modulation in a thermal atom vapor without diffraction or absorption
Lida Zhang, Jörg Evers
A scheme is proposed to achieve substantial controllable phase modulation for a probe field propagating through a thermal atomic vapor in double- configuration. The phase modula…
Far-Field Signatures of a Two-Body Bound State in Collective Emission from Interacting Two-Level Atoms on a Lattice
Paolo Longo, Jörg Evers
The collective emission from a one-dimensional chain of interacting two-level atoms is investigated. We calculate the light scattered by dissipative few-excitation eigenstates in t…
All-Electromagnetic Control of Broadband Quantum Excitations Using Gradient Photon Echoes
Wen-Te Liao, Christoph H. Keitel, Adriana Pálffy
A broadband quantum echo effect in a three level -type system interacting with two laser fields is investigated theoretically. Inspired by the emerging field of nuclear…
Relativistic spin operators in various electromagnetic environments
Heiko Bauke, Sven Ahrens, Christoph H. Keitel +1
Different operators have been suggested in the literature to describe the electron's spin degree of freedom within the relativistic Dirac theory. We compare concrete predictions of…
The Wigner time delay for laser induced tunnel-ionization via the electron propagator
Enderalp Yakaboylu, Michael Klaiber, Karen Z. Hatsagortsyan
Recent attoclock experiments using the attsecond angular streaking technique enabled the measurement of the tunneling time delay during laser induced strong field ionization. Theor…
Electron-spin dynamics induced by photon spins
Sven Ahrens, Heiko Bauke, Christoph H. Keitel +1
Strong rotating magnetic fields may cause a precession of the electron's spin around the rotation axis of the magnetic field. The superposition of two counterpropagating laser beam…