Fluctuations & noise is a research area concerned with stochastic variability in physical, biological, and engineered systems, focusing on the origin, characterization, and consequences of random deviations from deterministic behavior. It encompasses thermal, quantum, and environmental noise, as well as intrinsic fluctuations in nonequilibrium and complex systems. Researchers study statistical properties (e.g., correlation functions, power spectra, probability distributions), fluctuation–dissipation relations, and noise-induced phenomena such as stochastic resonance, pattern formation, and rare events. The field integrates methods from statistical physics, stochastic processes, information theory, and nonlinear dynamics, with applications spanning condensed matter, soft matter, neuroscience, climate, and nanoscale devices.
Researchers at Ludwig-Maximilians-Universität, Max-Planck-Institut für Quantenoptik, Munich Center for Quantum Science and Technology (MCQST) and the University of Massachusetts recently carried out a study investigating ...
Thanks to nanoscale devices as small as human cells, researchers can create groundbreaking material properties, leading to smaller, faster, and more energy-efficient electronics. However, to fully unlock the potential of ...
Nanophysics
Sep 17, 2024
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83
For more than 20 years, quantum researchers have wondered whether a quantum system can have maximum entanglement in the presence of noise. A mathematician from Spain recently answered the question: No.
The ratchet mechanism is a fascinating energy-conversion system that converts disorderly or random motion into orderly, directed movement through a process known as spontaneous rectification. It is a critical component of ...
General Physics
Aug 20, 2024
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123
Understanding how transport networks, such as river systems, form and evolve is crucial to optimizing their stability and resilience. It turns out that networks are not all alike. Tree-like structures are adequate for transport, ...
General Physics
Jul 3, 2024
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110
One of the biggest challenges in quantum technology and quantum sensing is "noise"–seemingly random environmental disturbances that can disrupt the delicate quantum states of qubits, the fundamental units of quantum information.
Quantum Physics
Jun 7, 2024
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254
Researchers have succeeded in conducting an almost perfect quantum teleportation despite the presence of noise that usually disrupts the transfer of quantum state. The results have been published in the journal Science Advances.
Quantum Physics
May 2, 2024
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466
Scientists around the world work hard to rinse quantum systems for noise, which may disturb the function of tomorrow's powerful quantum computers. Researchers from the Niels Bohr Institute (NBI) have found a way to use noise ...
Quantum Physics
Mar 18, 2024
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398
Experimental research conducted by a joint team from Los Alamos National Laboratory and D-Wave Quantum Systems examines the paradoxical role of fluctuations in inducing magnetic ordering on a network of qubits.
Quantum Physics
Feb 1, 2024
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121
The equations that describe physical systems often assume that measurable features of the system—temperature or chemical potential, for example—can be known exactly. But the real world is messier than that, and uncertainty ...
General Physics
Jan 15, 2024
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213
