ICNF 2025 Plenary Speakers
The brain at the edge
Center for Complex Systems & Brain Sciences, Institute of Physical Sciences,
Universitad de San Martin (Argentina)
&
Physics, Hong Kong Baptist University (Hong Kong)
Abstract: The idea that the brain operates near the edge of a critical point -a state poised between order and disorder- similar to physical systems undergoing a phase transition, matured enough over the last two decades, as documented in hundreds of publications on both theory and experiments. We will first refresh the fundamental idea of criticality and then discuss some of the more recent results and applications at a range of scales.
1/f noise in quantum nanoscience
Department of Physics and Astronomy “Ettore Majorana”
University of Catania (Italy)
Abstract: Fluctuations with power spectral density S(f) increasing with decreasing frequency have been observed in a great variety of systems from physics, electronic engineering, and biology to music, economic, and social sciences, even medicine. In this presentation I will give an overview of the present understanding of this phenomenon in coherent quantum nanoscience and current trends towards its reduction and quantum control in hybrid superconducting quantum networks.The idea that the brain operates near the edge of a critical point -a state poised between order and disorder- similar to physical systems undergoing a phase transition, matured enough over the last two decades, as documented in hundreds of publications on both theory and experiments. We will first refresh the fundamental idea of criticality and then discuss some of the more recent results and applications at a range of scales.
Low-noise Terahertz Sources
Head of the THz-photonics group at the Technische Universität Braunschweig, Germany.
Abstract: Electromagnetic waves in the Terahertz range of the spectrum (between 0.1 and 10 THz) are very important tools for spectroscopy, astronomy and many other applications. Especially in the field of communications they offer a huge bandwidth, which is necessary to keep pace with the exponentially increasing data rates in the worldwide networks.
But, in a communication system the noise of the carrier source in the transmitter and that of the local oscillator in the receiver directly defines the maximum data rates that can be transmitted and the energy consumption required for the processing of the signals. Additionally, the sources should be tunable, compact and energy efficient.
Therefore, in the talk the basics and recent advancements of low-noise Terahertz oscillators will be reviewed, and ways to integrate these oscillators will be discussed.
Spin Qubit Noise and Qubit Performance in Silicon
RIKEN Center for Emergent Matter Science and RIKEN Center for Quantum Computing, Saitama, Japan
Abstract: Silicon quantum dots provide a promising platform for spin-based quantum computing with high-fidelity qubits. The high-fidelity operation of qubits is an important perquisite for implementing fault tolerant computation and also helps reduce the qubit overhead for logical operations. We have recently studied phase noise related to spin using in multi-qubit devices made from isotopically purified Si/SiGe, which may eventually limit the performance. In this talk, I will review recent advances in detecting qubit noise and discuss the noise, focusing on these results, and discuss noise models that affect qubit performance.