Quantum simulator enables first microscopic observation of charge carriers pairing

Using a quantum simulator, researchers at the Max Planck Institute of Quantum Optics (MPQ) have observed pairs of charge carriers that may be responsible for the resistance-free transport of electric current in high-temperature superconductors. So far, the exact physical mechanisms in these complex materials are still largely unknown. Theories assume that... more

Physics Breakthrough of the Year 2022: The Speed Limits of Optoelectronics

The physicsworld magazine has chosen the recent research of Dr. Marcus Ossiander and Dr. Martin Schultze as one of the top ten breakthroughs of 2022. With their paper "The speed limit of optoelectronics" published in March 2022, they have explored the limits of optoelectronic circuits. more

NISQ-Computer: Quantum entanglement can be a double-edged sword

NISQ computers need quantum entanglement as a key resource to perform computations. But the presence of entanglement can also in some cases be a threat to their accuracy, like a recently published paper shows. more

More control over plasma accelerators

LMU Physicists at the Centre for Advanced Laser Applications (CALA) have combined two plasma-based methods of particle acceleration for electron beams: a laser-driven wakefield accelerator (LWFA) with a particle-beam-driven wakefield accelerator (PWFA). With this combination, they achieve better stability and higher particle density for electron beams than with just a single plasma accelerator. more

Erbium atoms in silicon: A prime candidate for quantum networks

A team of researchers at the Max Planck Institute of Quantum Optics has laid the foundation for the development of future quantum networks. The scientists embedded individual erbium atoms in crystalline silicon, creating ideal conditions for storing and passing on quantum information. more

New Hardware for Quantum Networking

Researchers at the Max-Planck-Institute of Quantum Optics and the Technical University of Munich have demonstrated that individual atoms in a thin crystalline slab can be resolved and individually controlled using light of a precisely adjusted color. This will enable the exchange of quantum information between them in order to create extended quantum networks. more

Light-driven molecular swing

Scientists at the Ludwig-Maximilians-Universität München (LMU) and the Max Planck Institute of Quantum Optics (MPQ) have used ultrashort laser pulses to make the atoms of molecules in a solution vibrate and have gained a precise understanding of the dynamics of energy transfer that take place in the process. more

Entangled photons tailor-made

In order to effectively use a quantum computer, a larger number of specially entangled basic building blocks are needed to carry out computational operations. A team of physicists at MPQ has now for the very first time demonstrated this task with photons emitted by a single atom. Following a novel technique, the researchers generated up to 14 entangled photons in an optical resonator, which ... more

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