News Division Pfeifer

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José R. Crespo López-Urrutia elected into DFG review board

MPIK scientist successful in DFG review board election

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Oxygen dissociation time-resolved with the first combination of extreme-ultraviolet light sources

For the first time, researchers have succeeded in selectively exciting a molecule using a combination of two extreme-ultraviolet light sources and…

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Highly charged Xenon ions as probes of fifth forces

A comprehensive spectroscopic study identified highly charged xenon ions as an excellent candidate for probing new physics. Thirteen atomic…

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How cosmic rays influence space chemistry - cold molecular ions measured in the Laboratory

Scientists from the Max-Planck-Institut für Kernphysik and other institutions have obtained a significantly higher ionization rate in dilute molecular…

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Precise testing of quantum electrodynamics

Measurement of the g factor of the electron in hydrogen-like tin confirms the standard model of particle physics under extremely high electric field…

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Electron recollision tracked in real-time in one shot

The motion of an electron in a strong infrared laser field is tracked in real time by means of a novel method developed by MPIK physicists and applied…

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X-ray analysis without doubt

Four-decade enigma of cosmic X-rays solved

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Electrons and photons in a twin pack

Resonant two-photon ionisation of helium measured with angular resolution

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World's first optical atomic clock with highly charged ions

Optical atomic clocks are the most accurate measuring instruments ever built and are becoming key tools for basic and applied research, for example to…

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José R. Crespo López-Urrutia Fellow of the American Physical Society

“For groundbreaking experiments on sympathetic cooling of highly charged ions and many contributions to spectroscopy for astrophysics, plasma physics,…

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Intense laser light modifies the pairing of electrons

The quantum-mechanical exchange interaction between electrons, a consequence of the Pauli exclusion principle, can be specifically modified with…

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Explosion in a biomolecule

When cells are exposed to ionising radiation, more destructive chain reactions may occur than previously thought. An international team led by…

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Quantum algorithms bring ions to a standstill

Laser beams can do more than just heat things up; they can cool them down too. That is nothing new for physicists who have devoted themselves to…

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MPIK twice among the finalists for “Breakthrough of the Year 2021“

Both the work on coherent control of nuclear excitations with suitably shaped X-ray light and the new method for sympathetic laser cooling of protons…

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Professorship for Anne Harth

Dr. Anne Harth, head of a junior research group in the Pfeifer department at MPIK, has accepted a professorship for “Computational Optics & Light…

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Dissertation Prize of DPG for Peter Micke

For his dissertation and lecture entitled „Quantum Logic Spectroscopy of Highly Charged Ions“, Dr. Peter Micke has been awarded the Dissertation Prize…

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New BMBF quantum technology project VAUQSI launched at MPIK

The quantum technology project Many-Frequency Control of Ultrastable Qubits in Superconducting Ion Traps (Viel-Frequenz-Ansteuerung Ultrastabiler…

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Novel superconducting trap for precise frequency measurements

The group led by José Crespo López-Urrutia at MPIK in collaboration with the Physikalisch-Technische Bundesanstalt has built and successfully tested a…

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Timing molecular structural dynamics both excited and probed by extreme ultraviolet light

MPIK physicists of the group around Christian Ott (division of Thomas Pfeifer) demonstrated for the first time an all-XUV (extreme ultraviolet)…

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Determining the structure of a molecule with laser-induced electron diffraction

Researchers show how laboratory-frame photoelectron spectra can be used directly to determine the molecular structure with atomic precision from…

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X-ray double flashes control atomic nuclei

A team of researchers from the Max Planck Institute for Nuclear Physics in Heidelberg has coherently controlled nuclear excitations using suitably…

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Measuring chirps at extremely high frequencies

A new method provides an ultrafast plasma switch, which temporally cuts off parts of high-frequency light flashes. Carried trillions of times faster…

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No longer “faster than permitted by our galaxy” ...

A collaboration between the groups of Maurice Leutenegger, José Crespo and Sven Bernitt from NASA Goddard Space Flight Center, MPIK, Helmholtz…

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Rotation of a molecule as an "internal clock"

Using a new method, physicists at the Heidelberg Max Planck Institute for Nuclear Physics have investigated the ultrafast fragmentation of hydrogen…

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New measurement exacerbates old problem

Two prominent X-ray emission lines of highly charged iron have puzzled astrophysicists for decades: their measured and calculated brightness ratios…

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Quantum jump tipping the balance

Measuring tiny differences in mass between different quantum states provides new insights into heavy atoms

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Laura Cattaneo new research group leader at the MPIK

Dr. Laura Cattaneo was selected by the MPG for a position as an independent Max Planck Research Group (MPRG) leader. She will set up her group from…

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Water stimulates break-up of molecular rings

On the basis of experiments and theoretical calculations, researchers identified a new reaction in pairs of one water and one organic molecule which…

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Quantum logic spectroscopy unlocks potential of highly charged ions

Atomic frequencies measured with 100 million times higher resolution

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