1.2k 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 ScientifiqueFR44 papers
- Philipps University of MarburgDE30 papers
- Deutsches Elektronen-Synchrotron DESYDE27 papers
- Freie Universität BerlinDE24 papers
- European X-Ray Free-Electron LaserDE22 papers
- Goethe University FrankfurtDE22 papers
- University of FreiburgDE20 papers
- Hebrew University of JerusalemIL17 papers
- Fritz Haber Institute of the Max Planck SocietyDE16 papers
- Helmholtz-Zentrum Berlin für Materialien und EnergieDE16 papers
- Johannes Gutenberg University MainzDE14 papers
- Universität HamburgDE14 papers
101 papers · 1 filter
High-fidelity control of a C nuclear spin coupled to a tin-vacancy center in diamond
Jeremias Resch, Ioannis Karapatzakis, Mohamed Elshorbagy +9
Nuclear spins near group-IV defects in diamond are promising candidates for quantum memories in quantum network applications. Here, we demonstrate high-fidelity control of a single…
Security Analysis of Ensemble-Based Quantum Token Protocol Under Advanced Attacks
Bernd Bauerhenne, Lucas Tsunaki, Jan Thieme +2
We present and characterize advanced attacks on an ensemble-based quantum token protocol that allows for implementing non-clonable quantum coins. Multiple differently initialized t…
Spectroscopic footprints of quantum friction in nonreciprocal and chiral media
O. J. Franca, Fabian Spallek, Steffen M. Giesen +4
We investigate how the quantum friction experienced by a polarizable atom moving with constant velocity parallel to a planar interface is modified when the latter consists of chira…
Ensemble-Based Quantum Token Protocol Benchmarked on IBM Quantum Processors
Lucas Tsunaki, Bernd Bauerhenne, Malwin Xibraku +3
Quantum tokens envision to store unclonable quantum states in a physical device, with the goal of being used for personal authentication protocols, as required by banks. Still, the…
High-precision minmax solution of the two-center Dirac equation
Ossama Kullie
We present a high-precision solution of Dirac equation by numerically solving the minmax two-center Dirac equation with the finite element method (FEM). The minmax FEM provide a hi…
Rotational excitation in sympathetic cooling of diatomic molecular ions by laser-cooled atomic ions
J. Martin Berglund, Michael Drewsen, Christiane P. Koch
Sympathetic cooling of molecular ions through the Coulomb interaction with laser-cooled atomic ions is an efficient tool to prepare translationally cold molecules without, ideally,…
Multi-channel, tunable quantum photonic devices on a fiber-integrated platform
Woong Bae Jeon, Dong Hyun Park, Jong Sung Moon +3
Scalable, reliable quantum light sources are essential for increasing quantum channel capacity and advancing quantum protocols based on photonic qubits. Although recent development…
Purcell effect in chiral environments
C. S. Rapp, Janine C. Franz, S. Y. Buhmann +1
The Purcell effect describes the modification of the spontaneous decay rate in the presence of electromagnetic media and bodies. In this work, we shed light on the dependencies and…
Generation of entanglement using a short-wavelength seeded free-electron laser
Saikat Nandi, Axel Stenquist, Asimina Papoulia +25
Quantum entanglement between the degrees of freedom encountered in the classical world is challenging to observe due to the surrounding environment. To elucidate this issue, we inv…
Purcell-induced suppression of superradiance for molecular overlayers on noble atom surfaces
Johannes Fiedler, Kristian Berland, Stefan Yoshi Buhmann
We study the impact of an environment on the electromagnetic responses of a molecule in the presence of a dielectric medium. By applying the dipole-dipole coupling between the mole…
Macroscopic quantum electrodynamics theory of resonance energy transfer involving chiral molecules
Janine Christine Franz, Stefan Yoshi Buhmann, A. Salam
Resonance energy transfer between chiral molecules can be used to discriminate between different enantiomers. The transfer rate between chiral molecules consists of a non-discrimin…
Shape optimizations for body-assisted light-matter interactions
Jonas Matuszak, Stefan Yoshi Buhmann, Robert Bennett
We implement a shape optimization algorithm for body-assisted light-matter interactions described by the formalism of macroscopic quantum electrodynamics. The approach uses the lev…
Optimizing for an arbitrary Schrödinger cat state
Matthias G. Krauss, Christiane P. Koch, Daniel M. Reich
We derive a set of functionals for optimization towards an arbitrary cat state and demonstrate their application by optimizing the dynamics of a Kerr-nonlinear Hamiltonian with two…
Quantized fields for optimal control in the strong coupling regime
Frieder Lindel, Edoardo G. Carnio, Stefan Yoshi Buhmann +1
We tailor the quantum statistics of a bosonic field to deterministically drive a quantum system into a target state. Experimentally accessible states of the field achieve good cont…
Rational pulse design for enantiomer-selective microwave three-wave mixing
Monika Leibscher, Jonas Kalveram, Christiane P. Koch
Microwave three-wave mixing allows for enantiomer-selective excitation of randomly oriented chiral molecules into rotational states with different energy. The random orientation of…
Solution of the two-center Dirac equation with 20 digits precision using the finite-element technique
O. Kullie, S. Schiller
We present a precise fully relativistic numerical solution of the two-center Coulomb problem. The special case of unit nuclear charges is relevant for the accurate description of t…
Nested Open Quantum Systems Approach to Photonic BoseEinstein Condensation
Andris Erglis, Stefan Yoshi Buhmann
The photonic BoseEinstein condensate is a recently observed collective ground state of a coupled light-matter system. We describe this quantum state based on macroscopic quantum…
Optimal control and selectivity of qubits in contact with a structured environment
Quentin Ansel, Jonas Fischer, Dominique Sugny +1
We present a theoretical study of the optimal control of a qubit interacting with a structured environment. We consider a model system in which the bath is a bosonic reservoir at z…
Studying ultrafast Rabi dynamics with a short-wavelength seeded free-electron laser
Saikat Nandi, Edvin Olofsson, Mattias Bertolino +26
Rabi oscillations are periodic modulations of populations in two-level systems interacting with a time-varying field. They are ubiquitous in physics with applications in different…
Detection of quantum-vacuum field correlations outside the light cone
Francesca Fabiana Settembrini, Frieder Lindel, Alexa Marina Herter +2
According to quantum field theory, empty space -- the ground state of the theory with all real excitations removed -- is not empty at all, but filled with quantum-vacuum fluctuatio…
Engineering Strong Beamsplitter Interaction between Bosonic Modes via Quantum Optimal Control Theory
Daniel Basilewitsch, Yaxing Zhang, S. M. Girvin +1
In continuous-variable quantum computing with qubits encoded in the infinite-dimensional Hilbert space of bosonic modes, it is a difficult task to realize strong and on-demand inte…
Purcell modification of Auger and interatomic Coulombic decay
Janine Franz, Stefan Yoshi Buhmann
An excited two-atom system can decay via different competing relaxation processes. If the excess energy is sufficiently high the system may not only relax via spontaneous emission…
Lie algebra for rotational subsystems of a driven asymmetric top
Eugenio Pozzoli, Monika Leibscher, Mario Sigalotti +2
We present an analytical approach to construct the Lie algebra of finite-dimensional subsystems of the driven asymmetric top rotor. Each rotational level is degenerate due to the i…
Resource-efficient dissipative entanglement of two trapped-ion qubits
Daniel C. Cole, Stephen D. Erickson, Giorgio Zarantonello +7
We demonstrate a simplified method for dissipative generation of an entangled state of two trapped-ion qubits. Our implementation produces its target state faster and with higher f…