30 research outputs found
Frequency mixing in a ferrimagnetic sphere resonator
Frequency mixing in ferrimagnetic resonators based on yttrium and calcium
vanadium iron garnets (YIG and CVBIG) is employed for studying their nonlinear
interactions. The ferrimagnetic Kittel mode is driven by applying a pump tone
at a frequency close to resonance. We explore two nonlinear frequency mixing
configurations. In the first one, mixing between a transverse pump tone and an
added longitudinal weak signal is explored, and the experimental results are
compared with the predictions of the Landau-Zener-Stuckelberg model. In the
second one, intermodulation measurements are employed by mixing pump and signal
tones both in the transverse direction for studying a bifurcation between a
stable spiral and a stable node attractors. Our results are applicable for
developing sensitive signal receivers with high gain for both the radio
frequency and the microwave bands
Can Copyright be Reduced to Privacy?
There is an increasing concern that generative AI models may produce outputs
that are remarkably similar to the copyrighted input content on which they are
trained. This worry has escalated as the quality and complexity of generative
models have immensely improved, and the availability of large datasets
containing copyrighted material has increased. Researchers are actively
exploring strategies to mitigate the risk of producing infringing samples, and
a recent line of work suggests to employ techniques such as differential
privacy and other forms of algorithmic stability to safeguard copyrighted
content.
In this work, we examine the question whether algorithmic stability
techniques such as differential privacy are suitable to ensure the responsible
use of generative models without inadvertently violating copyright laws. We
argue that there are fundamental differences between privacy and copyright that
should not be overlooked. In particular we highlight that although algorithmic
stability may be perceived as a practical tool to detect copying, it does not
necessarily equate to copyright protection. Therefore, if it is adopted as
standard for copyright infringement, it may undermine copyright law intended
purposes