Conférences  >  Physique  >  Mécanique quantique et technologie quantique  >  Allemagne

Wilhelm and Else Heraeus-Foundation

Active research collaboration between German and Latvian scientists currently spans a number of exciting research areas of quantum science and technology including single-electron nanoelectronics, novel 2D materials, quantum magnetometry with levitated, atomic, and colour - centre magnets, and single-photon emitters among others. This Workshop will bring together representatives of the diverse research communities with a goal of fostering cross-topic “fertilization” and strengthening and broadening the bi-national cooperation, as well as expanding international collaboration beyond the two nations, in particular to the Baltic scene on synergetic topics. The workshop, open to international participation beyond Baltics and Germany, will feature overview talks by top experts in the respective fields, contributed talks and posters, and plentiful opportunities for informal interactions in a beautiful setting of the Bad Honnef Physics Center.

Wilhelm and Else Heraeus-Foundation

The Einstein-Podolsky-Rosen (EPR) paradox, introduced in 1935, challenged the completeness of quantum mechanics and reshaped our understanding of reality and nonlocality. It inspired key breakthroughs in the field, including Schr¨odinger’s concept of entanglement and Bell’s theorem, which proved the incompatibility of quantum mechanics with both realism and locality. This seminar will bring together leading experts, early-career researchers, and PhD students to explore the foundational significance, recent developments, and future directions of the EPR paradox. By fostering scientific exchange between senior and junior researchers, the event aims to inspire new research directions and collaborations. Contributed talks and poster sessions will provide a platform for young scientists to engage with leading experts, ensuring a dynamic and productive exchange of ideas.

Wilhelm and Else Heraeus-Foundation

Physics-based computing explores alternatives to traditional transistor-based electronics, leveraging nonlinear phenomena in various physical domains to solve real-world problems. This approach extends the concept of analog computing, offering potential for sustainable, energy-efficient solutions in information and communication technologies. The demand for machine learning has surged, driven by advancements like ChatGPT, but the energy cost of digital, transistor-based computing remains high, particularly in large-scale data centers. In contrast, physics-based computing, such as physical reservoir computing, harnesses nonlinear dynamics in systems like magnetic skyrmions, photons, and spin waves to enable more efficient data classification, pattern recognition, and time series predictions. By operating in the nonlinear regime, these physical systems convert input signals into measurable outputs, offering a promising route to edge computing applications in fields like medical diagnostics, autonomous mobility, and smart energy grids. The strength of physical computing lies in its ability to process complex data with minimal energy consumption, without relying on traditional deep learning algorithms. Magnonics, spintronics, and photonics are key fields in this emerging area, offering systems that can serve as powerful, interconnected computational reservoirs. Spintronics, harnessing the electrons’ spin, enables the design of energy-efficient neural networks, while magnonics and photonics provide high-frequency platforms for wave-based computing. The integration of these fields, alongside other platforms such as superconductors, presents new opportunities for developing complex, scalable computing systems that can meet the growing demands of machine learning while advancing sustainable technologies.

Matériel informatique,    Théorie de l'information quantique et informatique quantique

Max Planck Institute for the Physics of Complex Systems, Dresden

Physique mathématique,    Matériaux quantiques, basses températures

Wilhelm and Else Heraeus-Foundation

Since the first experimental realization of Bose-Einstein condensation in ultracold atomic gases in 1995, there have been several substantial breakthroughs. Today, systems of bosonic or fermionic quantum gases allow for an unprecedented high level of experimental control concerning all ingredients of the underlying many-body Hamiltonian. Therefore, ultracold atomic or molecular quantum gases are considered to be ideal both for quantum simulators and quantum computations. Thus, they are best capable to simulate difficult problems in quantum many-body physics as they occur in condensed matter physics and other fields of physics and at the same time allow for developing architectures for quantum computers, which will ultimately surpass classical computers.

Since the first experimental realization of Bose-Einstein condensation in ultracold atomic gases in 1995, there have been several substantial breakthroughs. Today, systems of bosonic or fermionic quantum gases allow for an unprecedented high level of experimental control concerning all ingredients of the underlying many-body Hamiltonian. Therefore, ultracold atomic or molecular quantum gases are considered to be ideal both for quantum simulators and quantum computations. Thus, they are best capable to simulate difficult problems in quantum many-body physics as they occur in condensed matter physics and other fields of physics and at the same time allow for developing architectures for quantum computers, which will ultimately surpass classical computers. In response to the occurrence of many new research directions in recent years, it is highly desirable to give a coherent overview over the diverse facets which are now appearing, and to reflect upon the future perspectives of the field.

Max Planck Institute for the Physics of Complex Systems, Dresden

Wilhelm and Else Heraeus-Foundation

This workshop will unite leading theorists and experimentalists to chart the next phase of moiré research, foster collaboration, and spark new directions at the forefront of quantum materials.

Max Planck Institute for the Physics of Complex Systems, Dresden

Max Planck Institute for the Physics of Complex Systems, Dresden

Cours et événements pour étudiants en physique,    Théorie de l'information quantique et informatique quantique

Wilhelm and Else Heraeus-Foundation

System-agnostic black box methods in quantum information include contextuality, communication matrices, device-independent cryptography, and any other approach to quantum information where quantum devices are described as uncharacterized black boxes with inputs and outputs. Some of these approaches, such as contextuality, were developed to address problems in foundations of quantum theory and they are currently finding their way towards applications in quantum information. Others were already developed with applications in mind.

Wilhelm and Else Heraeus-Foundation

In topology, properties of a geometric object are identified which remain unchanged under continuous deformations. Those properties are then referred to as topological invariants. This mathematical concept gains ever more importance in many branches of physics, comprising general relativity, quantum field theory, quantum chromodynamics, condensed matter, strongly correlated many-body system, magnetism, soft matter physics, and symmetry classification issues. Topological phases of matter have emerged as a far-reaching scientific breakthrough in the 21st century. The topological states were initially conceived as exotic states that are labeled by topological invariants interpreted as quantum numbers. Furthermore, the exotic transport properties exhibited by topological materials have been harnessed for applications in quantum technologies, making topology a very active research topic in quantum information theory and quantum computing. More recently, topological concepts have been studied in an increasingly diverse list of disciplines, also including applications in classical physics such as mechanics of elastic and deformable bodies, nonlinear dynamics, and biophysics. There are also considerable activites in mathematical physics.

Wilhelm and Else Heraeus-Foundation

The chirality induced spin selectivity effect is a quantum phenomenon that is based on chirality, spin-orbit coupling, particle-particle interactions, and compositeness. However, exactly how these aspects are brought together and results in the CISS effect is a work under construction and much debate. While the outstanding issue of the foundations of the chirality induced spin selectivity effect has yet to be solved, novel direction are outlined in the community, new implications of the effect are being discovered Hence, within the scope of the workshop, these questions, among several others, will be discussed, with the aim to reach some clarification. Leading experts working in the field of the chirality induced spin selectivity effect as well as expert physicists, chemists, engineering and biology-oriented scientists aiming to focus research in this direction will provide lectures with a broad scope to facilitate a wider comprehension and open discussions of this enigmatic issue.

Wilhelm and Else Heraeus-Foundation

The goal of this seminar is an inspiring exchange of new ideas based on latest results on quantum entanglement in experiment and theory, followed by discussions of potential future research directions and the promotion of new collaborations. To this end, the seminar will bring together leading experimentalists and theoreticians in the field, as well as young researchers and students.

This seminar covers several aspects of recent developments of quantum entanglement, ranging from theoretical concepts for high-dimensional systems as well as multi-partite effects like superactivation, over computational aspects of entanglement, to the implementation of entangled states in different experimental platforms like ion traps, superconducting qubits or photonic systems.

Wilhelm and Else Heraeus-Foundation

The goal of the meeting is to

- Facilitate knowledge exchange: Provide a platform for experts and young scientists to share recent findings and theoretical advancements in macroscopic quantum superpositions.

- Highlight the best of the state-of-the-art: We will showcase recent breakthroughs in creating and observing cat states in various physical systems.

Wilhelm and Else Heraeus-Foundation

In quantum computing, the use of multiple ion species holds promise for instance by mitigating crosstalk, enabling efficient sympathetic cooling, thereby providing a path toward large-scale trapped-ion quantum computers. Recently other applications such as quantum logic detection of chemical reactions or reduction of uncertainty in multi-species clocks have been demonstrated. This seminar aims to bring together experts from these diverse research areas to explore synergies and foster collaboration in the control of multi-species trapped-ion quantum systems. By addressing shared challenges, such as mixed-species crystal dynamics and the development of efficient quantum logic protocols, we seek to identify synergy and foster collaboration in this rapidly evolving field.

Wilhelm and Else Heraeus-Foundation

The purpose of this seminar is to bring together young and experienced researchers in the rapidly developing field of neutral-atom quantum information processing, and to give them the opportunity to interact and develop new ideas in a pleasant scientific environment. We will target and discuss the latest developments and major challenges on the way to controlling large-scale quantum systems.