Moiré patterns emerge when two overlaid lattices misalign slightly, generating new physical properties that aren’t present in the individual layers. Historically, researchers have assumed that the magnetic order in these moiré materials directly mirrors the interference patterns generated by the lattice overlap. However, new evidence from cutting-edge research implies that this high expectation has been fundamentally misconstrued, unearthing a complex interplay of forces governing magnetism in these systems. The experimental study focusing on twisted double-bilayer chromium triiodide (CrI₃) demonstrates that magnetism is not simply a local phenomenon tied directly to the moiré pattern itself. Instead, it exhibits a broader dynamism, capable of extending into large, topological textures that can span hundreds of nanometers.

Utilizing scanning nitrogen-vacancy magnetometry, the researchers meticulously examined the magnetic fields produced by the twisted CrI₃ layers. This advanced method allowed the authors to visualize magnetic textures with unparalleled resolution, revealing phenomena that extend far beyond the confines of a single moiré cell. The findings indicated that these textures could stretch up to approximately 300 nanometers—far larger than the typical wavelength associated with moiré patterns. This observation prompts a reevaluation of long-held assumptions regarding the synchronization of magnetic order and moiré formations.

The research further details a counterintuitive relationship between twist angle and observed magnetic texture size. As the twist angle diminishes, theoretically, we expect the moiré wavelength to increase; however, the observed magnetic textures act contrary to this expectation. The results show that the size of the observable magnetic textures maximizes at approximately 1.1 degrees and then diminishes again at angles surpassing 2 degrees. Such unexpected findings lead to an important conclusion: magnetism does not merely follow the geometric template provided by the moiré structure. Rather, it emerges from a collective competition between various factors, including exchange interactions, magnetic anisotropy, and Dzyaloshinskii–Moriya interactions, all delicately adjusted by the relative rotation of the layers.

A hallmark achievement of this study is the introduction of the concept of “super-moiré spin order”. This innovative framework posits that aligning atomic layers not only gives rise to fascinating nanoscale properties but also lends itself to a more complex understanding of mesoscopic topological features. The degree of twist serves as a thermodynamic control parameter, manipulating the interactions that stabilize these robust topological phases. This concept transcends traditional views of moiré physics, which has long been regarded as a purely local phenomenon, illustrating that the geometry of atomic interactions plays a crucial role in the emergence of magnetic properties at larger lengths.

One of the most captivating aspects of this research is its potential application in spintronic technologies, where information is processed using the spins of electrons, rather than their charge. The discovered large-scale, Néel-type skyrmionic textures could offer significant advantages for future devices. These topologically protected magnetic states are compact, inherently stable, and can be manipulated with minimal energy—a vital characteristic for efficient spintronic architectures. The ability to create such textures merely by twisting layers, without the need for lithography or bulky materials, presents a revolutionary approach.

The implications of these findings extend beyond theoretical interest; they bear profound practical consequences for energy-efficient computing platforms. As researchers delve further into the rich interplay of geometrical configurations and quantum interactions, they may uncover new paradigms within the realm of magnetism. The understanding that twist can influence large-scale magnetic order opens doors to innovative designs, potentially driving forward the next generation of computing technologies poised to surpass conventional, silicon-based systems.

Dr. Elton Santos, a pivotal figure in this study and Reader in Theoretical/Computational Condensed Matter Physics at the University of Edinburgh, emphasized the transformative nature of this discovery. His assertion that twisting serves not only as an electronic knob but also as a magnetic control feature encapsulates the essence of the study. The legitimacy of this relationship allows for unprecedented design methodologies in topological magnetic states through mere angular adjustments, a tool that, despite its simplicity, possesses wide-ranging implications for the future of material science and technology.

As these new phenomena surface from layered materials, the scientific community is offered a fortuitous lens through which to explore broader concepts of order and disorder at the quantum scale. By developing a deeper understanding of how twisting parameters can instigate emergent magnetic states, researchers will empower a deeper engagement with materials that have hitherto remained enigmatic.

Thus, as this groundbreaking research propels forward the frontier of quantum materials and their applications, it frames a vivid picture of the future—one where magnetic properties are not relegated to traditional frameworks, but instead, flourish through innovative manipulations at the atomic level.

A new chapter in the study of magnetism is unfolding, spurred by the recognition that geometry and the angular relationships between layers play a critical role in the dynamics of spin order. By embracing the vast possibilities inherent in twist-controlled materials, the quest for next-generation technologies that are energy-efficient and effective may soon become a reality. Researchers and technologists alike will benefit from harnessing these newly discovered phenomena, gearing up toward what could be a remarkable leap in materials science and quantum technology.

With advancing techniques and theoretical models continually reshaping our interpretation of physical phenomena in low-dimensional materials, the horizon of possibility appears ever-expanding. Such pivotal findings will undoubtedly continue to stimulate discussions and discoveries in fundamental physics, addressing both the core scientific challenges and potential societal applications that lie ahead. Consequently, the magnetic landscapes shaped by these concepts may soon manifest as central components of advanced technological ecosystems.

Subject of Research: Twist-controlled magnetism in double-bilayer chromium triiodide
Article Title: Twist-controlled magnetism grows beyond the moiré
News Publication Date: 2-Feb-2026
Web References: Nature Nanotechnology
References: Nature Nanotechnology
Image Credits: Dr Elton Santos-University of Edinburgh

Keywords

Applied sciences and engineering, Mathematics

Traditional clocks, such as wristwatches, rely on consistent periodic motions—ticks occurring at regular, predictable intervals—to mark the passage of time. However, many natural phenomena do not conform to such orderly rhythms. Instead, they unfold as sequences of irregular, unpredictable events. The team at King’s College has demonstrated that even these stochastic processes can serve as reliable timers by leveraging the inherent statistical properties of the events’ intervals.

A fundamental concept underpinning this breakthrough is the idea of Markovian processes—systems where the probability of each event depends solely on the immediately preceding event, with no memory of the distant past. Markovian processes are ubiquitous in nature, manifesting in examples ranging from the fluctuations of stock market prices to the irregular beating of a human heart. By carefully analyzing the timing and frequency of these random “jumps,” the researchers have formalized methods to estimate elapsed time with unprecedented accuracy.

The core of the discovery lies in establishing strict mathematical bounds on how precisely a clock built from Markovian events can measure time. This bound represents the absolute classical limit to accuracy when relying on memoryless stochastic processes within the framework of classical physics. If a real-world clock exhibits timekeeping that surpasses this limit, it suggests the presence of fundamentally different underlying dynamics—namely, quantum mechanical effects.

Quantum clocks, such as atomic clocks based on transitions of electrons at the quantum scale, are famously capable of surpassing the precision limits dictated by classical physics. The King’s College findings provide a theoretical framework that explains why classical clocks cannot compete with their quantum counterparts, reinforcing the profound impact of quantum phenomena on the nature of time measurement.

Dr. Mark Mitchison, lead author and Proleptic Senior Lecturer in the Department of Physics at King’s College London, articulated the philosophical origins and practical implications of their research. He explained that the motivation was to distill the quintessential components necessary to build a clock under any circumstances—even in isolation from conventional instruments. By counting irregular, random events around oneself, whether the ebb and flow of ocean waves or the irregular beats of a heart, one could construct the best possible classical clock available.

These insights extend far beyond abstract theory. The team envisions applications in understanding how biological systems orchestrate orderly functions amidst noisy, fluctuating environments. Motor proteins such as kinesin, which “walk” along cellular microtubules transporting vital materials, transform chaotic thermal fluctuations into highly regular, directed movements. Such molecular machines act as natural clocks, their rhythmic stepping crucial to cellular health and implicated in diseases like motor neurone disease when malfunctioning.

Reinterpreting molecular biological processes as clocks offers a fresh lens through which to view the emergence of order from chaos in living systems. Not only does this approach provide rigorous mathematical tools for characterizing biological timekeeping, but it also bridges scales—from microscopic molecular motors to macroscopic ecosystems—where spontaneous generation of temporal order is essential.

Importantly, this breakthrough also touches on deep, unresolved mysteries at the heart of physics. The unidirectional flow of time, our incapacity to recall the future, and the debate over whether time itself is quantized akin to energy are questions that challenge our fundamental understanding of reality. By demarcating what classical clocks can achieve and highlighting how quantum clocks defy those bounds, the researchers hope their work will catalyze new insights into these profound enigmas.

Furthermore, the mathematical formalism developed may enable experimentalists to identify quantum effects by scrutinizing deviations from classical Markovian predictions. In other words, by closely measuring timekeeping performance in a system and comparing it to the classical limits, researchers could detect the “signature” of quantum behavior seeping into macroscopic phenomena.

This fusion of abstract mathematics, classical physics, and quantum theory not only revitalizes our conception of time but also holds transformative potential for technologies reliant on precise time measurement. Atomic clocks, which underpin global positioning systems (GPS), telecommunications, and fundamental tests of physics, exemplify how quantum-enabled precision reshapes technological horizons.

As Dr. Mitchison concluded, contemplating time through the prism of clocks built on random events, whether classical or quantum, may finally illuminate the essence of temporal flow itself. Their work charts a path toward uniting the practicalities of measurement with the philosophical and physical complexities of time—perhaps eventually answering why time marches irreversibly forward and whether it is composed of indivisible units.

By threading the needle between stochastic randomness and deterministic order, this research breathes new life into the age-old quest of defining time, anchoring it in the rhythms of nature’s randomness rather than solely in engineered mechanical regularity. The mathematical tools developed by King’s College physicists thus represent a landmark achievement with ramifications echoing from biology to quantum technology, and from practical timekeeping to the very fabric of space-time.

Subject of Research:
Mathematical frameworks for measuring time using stochastic Markovian processes; classical versus quantum limits of clock accuracy.

Article Title:
New Mathematical Equations Enable Precise Clocks from Random Events, Challenging Classical Limits

News Publication Date:
Not specified in the source content.

Web References:
Not provided.

References:
Published in Physical Review X.

Image Credits:
Not provided.

Keywords

Quantum mechanics, physics, mechanics, physical sciences, theoretical physics

Professor Boschini has made remarkable strides in quantum materials, which are characterized by their unique electronic, magnetic, and topological properties. These materials form the foundation for new technologies, with potential applications ranging from quantum computing to advanced telecommunications. The award highlights the significance of his work, which utilizes cutting-edge techniques that enable a deeper understanding of these complex systems.

The Alfred P. Sloan Fellowship is highly selective, supporting early-career scientists exhibiting creativity, ambition, and a commitment to scientific inquiry. Being honored as one of the 126 recipients this year positions Boschini amongst a league of distinguished researchers, many of whom have gone on to win Nobel Prizes. His commitment to advancing quantum science is reflected not only in his research outcomes but also in the collaborative efforts with his research team at INRS.

In a world increasingly reliant on technological advancements, the importance of quantum research is magnified. The award comes amid the United Nations’ declaration of 2025 as the International Year of Quantum Science and Technology, further underscoring the global focus on this interdisciplinary field. This recognition adds to the growing awareness of quantum materials’ pivotal role in shaping future technologies, ranging from renewable energy solutions to advanced computing processes.

Boschini’s research focus involves the dynamics of quantum materials, concentrating on the phenomena that define electronic interactions within these systems. His work employs state-of-the-art ultrafast techniques, such as time- and angle-resolved photoemission spectroscopy (TR-ARPES). This powerful methodology provides insights into electron dynamics, allowing scientists to investigate matter’s intricate behavior at ultrafast timescales. Such technology serves as a cornerstone for exploring new and unexplored scientific territories.

Since his appointment at INRS in 2020, Boschini has concentrated on unveiling the complex interactions that govern unconventional superconductors, among other areas of inquiry. This work not only contributes to theoretical understanding but also bridges the gap between fundamental research and practical applications. The outcomes hold promise for significant technological innovations that could transform industries such as telecommunications, energy, and materials science.

The notion of fostering a collaborative research environment is central to achieving high-quality results in scientific fields. INRS boasts state-of-the-art facilities that support the next generation of scientists. With this fellowship, Boschini not only showcases his talent but also highlights the institutional commitment to advancing quantum research. Isabelle Delisle, the Scientific Director at INRS, emphasized the pivotal nature of Boschini’s work, reinforcing his contributions’ importance to the university and the broader scientific community.

Furthermore, Boschini’s academic journey is as compelling as his research. After earning his PhD from Politecnico di Milano in Italy, he expanded his expertise as a postdoctoral fellow at the Quantum Matter Institute in Vancouver. His trajectory reflects the dynamism that characterizes modern scientific pursuit, where collaboration and innovative thinking are indispensable.

Building a career steeped in quantum research, Boschini has established himself as a leading figure in the field, particularly regarding the study of strongly correlated electronic systems. His contributions extend beyond physical experimentation; they delve into a theoretical understanding of complex phenomena arising from quantum mechanics. This dual focus enables a comprehensive approach to exploring quantum materials, leading to richer insights and innovative methodologies.

Moreover, Professor Boschini has recently published seminal reviews on advanced spectroscopic techniques in renowned journals, further solidifying his position as an authority in the field. Such publications facilitate knowledge dissemination, which is vital for nurturing the next generation of scientists who will continue this critical work.

As the world approaches what is described as a quantum revolution, it becomes increasingly crucial for researchers to share their insights widely. The implications of their work could dictate the course of technological and scientific development for decades to come. Emerging from institutions like INRS, researchers such as Boschini embody the potential for transformative advances that can reshape our interaction with technology and the natural world.

The acknowledgment by the Alfred P. Sloan Foundation serves as a stepping stone for further exploration into quantum materials, urging Boschini and his team to pursue unexplored avenues and challenge existing boundaries within scientific knowledge. Every breakthrough in understanding the complexities of quantum systems may unveil new opportunities for harnessing their properties for societal benefit.

In conclusion, the 2025 Alfred P. Sloan Fellowship awarded to Professor Fabio Boschini illustrates the essential role of quantum materials research in addressing contemporary challenges. As emerging technologies become interwoven with advanced scientific understanding, leaders like Boschini will play a fundamental role in unveiling new vistas of potential. The ground he breaks today may shape the landscape of tomorrow’s technological innovations, cementing quantum materials as a cornerstone of future scientific endeavors.

Subject of Research: Quantum Materials Dynamics
Article Title: Professor Fabio Boschini Awarded 2025 Alfred P. Sloan Fellowship in Physics
News Publication Date: February 18, 2025
Web References: INRS
References: Alfred P. Sloan Fellowship
Image Credits: Institut national de la recherche scientifique (INRS)

Keywords

Quantum Materials, Alfred P. Sloan Fellowship, Quantum Science, Ultrafast Techniques, Research Fellowships, INRS, Physics Research, Novel Technologies, Superconductors.

The intrigue of simulating complex quantum phenomena is not new. In fact, the quest for efficient calculations regarding quantum processes has occupied scientists for decades. One classic example is the challenge of understanding how cold milk disperses within hot coffee. Conventional supercomputers often fall short in tackling such complex problems that require a precise understanding of quantum behavior. A revolutionary concept was introduced by Nobel Laureate Richard Feynman in 1982, which proposed that quantum computers could be the solution for simulating complex quantum phenomena more effectively than their classical counterparts.

Fast forward to today, and advances in quantum computing have brought Feynman’s vision closer to reality. The collaboration between PSI’s Läuchli and Elben and researchers from Google and various universities across five nations led to the development and successful testing of this new quantum simulator. Their innovative approach has not only allowed for enhanced precision in simulating quantum processes but also offers a remarkable level of flexibility that can be applied across a multitude of fields, ranging from solid-state physics to astrophysics. The publication of their findings in the esteemed scientific journal Nature underscores the significance of their achievement.

At the core of this innovative quantum simulator is the combination of digital and analogue techniques facilitated by a quantum chip developed by Google that houses 69 superconducting quantum bits, or qubits. This unique architecture enables operations to be performed in both digital and analogue modes. Whereas digital quantum computers operate using universal quantum gates like classical logic gates, they can leverage the unique properties of qubits to assume more than binary states — a fundamental advantage in quantum computing. However, purely digital quantum approaches have limitations in their applications as quantum simulators.

Analogue quantum simulators offer a different advantage, allowing for the direct simulation of physical processes. They accurately model interactions among particles, providing insights into phenomena such as magnetic properties in solids. The amalgamation of these two methodologies—digital and analogue—marks the breakthrough achieved by the physicists, effectively harnessing the strengths of each approach.

The research team’s method involves establishing precise and discrete initial conditions in the digital mode, such as simulating heat introduction into a solid. This controlled setup allows for the study of subsequent physical processes in the analogue mode, akin to how milk spreads when introduced into coffee. Through this analogy, the quantum simulator is capable of tracking dynamic physical processes such as heat diffusion and the emergence of magnetic domains in solids—capabilities that are vital for exploring complex quantum behaviors.

Andreas Elben, who contributes his expertise as a tenure-track scientist at PSI, remarked on the innovative nature of the quantum simulator, highlighting its capability to observe processes that reach thermal equilibrium. In this context, the milk analogy reflects how the simulator can demonstrate the distribution of energy among particles until a state of equilibrium is achieved. Läuchli echoed these sentiments, emphasizing that this advancement showcases the potential of superconducting analogue-digital quantum processors to serve as powerful quantum simulators.

The implications of this research extend far beyond mere theoretical inquiry. With the successful demonstration of a dual-mode quantum simulator, the groundwork has been laid for creating universal quantum simulators that are not restricted to specific physical problems. The versatility of this new technology opens up pathways to investigate a wide array of topics, most notably in magnetism—a field closely associated with Läuchli’s research.

The arrangement of qubits in the Google quantum chip is rectangular in shape, and the initial magnetic orientations of these qubits exhibit orderly patterns. However, the investigators are intrigued by the challenges posed by alternative chip geometries, such as triangular configurations. The interactions of qubits in these non-standard arrangements can lead to phenomena like frustrated magnetism, where traditional alignments break down, presenting opportunities for novel computing technologies that utilize magnetic spins instead of conventional electron charges.

Further explorations promise to unlock new applications in diverse areas, including materials science where researchers aim to develop novel high-temperature superconductors, and pharmaceuticals that are designed to operate with increased precision and decreased side effects. Notably, astrophysics stands to benefit from quantum simulations as well, particularly in addressing complex issues like the information paradox associated with black holes.

In conclusion, this pioneering work serves as a significant contribution to the field of quantum research, with capabilities that could fundamentally transform our approach to understanding intricate physical processes. As the collaboration with Google concludes, Andreas Läuchli and his team at PSI look forward to continuing their efforts to solve perplexing questions within quantum physics. By leveraging advancements made in quantum computing and simulation, researchers aim to answer fundamental inquiries that impact our comprehension of the universe.

Through their work, Läuchli and Elben, alongside their team, are poised to play a crucial role in advancing the frontiers of quantum research, which will have implications that resonate far beyond scientific circles.

Subject of Research: Not applicable
Article Title: Thermalization and criticality on an analogue–digital quantum simulator
News Publication Date: 6-Feb-2025
Web References: http://dx.doi.org/10.1038/s41586-024-08460-3
References: Not applicable
Image Credits: © Paul Scherrer Institute PSI/Mahir Dzambegovic
Keywords: Quantum computing, Analogue-digital simulation, Quantum mechanics, Superconducting qubits.