Zobrazeno 1 - 10
of 237
pro vyhledávání: '"Rao, A W"'
Dissipation in mechanics, optics, acoustics, and electronic circuits is nowadays recognized to be not always detrimental but can be exploited to achieve non-Hermitian topological phases or properties with functionalities for potential device applicat
Externí odkaz:
http://arxiv.org/abs/2306.04348
Autor:
Yu, Tao, Rao, J. W.
A perspective on non-Hermitian physics in magnetic systems is addressed in this short article, including exceptional points, exceptional nodal phases, the non-Hermitian SSH model, and the non-Hermitian skin effect.
Comment: 5 pages. Submitted as
Comment: 5 pages. Submitted as
Externí odkaz:
http://arxiv.org/abs/2304.11948
By developing a gain-embedded cavity magnonics platform, we create gain-driven polariton (GDP) that is activated by an amplified electromagnetic field. Distinct effects of gain-driven light-matter interaction, such as polariton auto-oscillations, pol
Externí odkaz:
http://arxiv.org/abs/2302.08904
We observe a power-dependent anticrossing of Walker spin-wave modes under microwave pumping when a ferrimagnet is placed in a microwave waveguide that does not support any discrete photon mode. We interpret this unexpected anticrossing as the generat
Externí odkaz:
http://arxiv.org/abs/2204.04590
Publikováno v:
Phys. Rev. Lett. 125, 147202 (2020)
By engineering an anti-parity-time (anti-PT) symmetric cavity magnonics system with precise eigenspace controllability, we observe two different singularities in the same system. One type of singularity, the exceptional point (EP), is produced by tun
Externí odkaz:
http://arxiv.org/abs/2009.03950
Publikováno v:
Phys. Rev. B 102, 014453 (2020)
We report on the electrical detection of a hybrid magnon-photon system, which is comprised of a magnetic sample coupled to a planar cavity. While the uniform Kittel mode has the largest coupling strength among all the magnon modes, it only generates
Externí odkaz:
http://arxiv.org/abs/2005.04161
Publikováno v:
Phys. Rev. B 101, 064404 (2020)
We systematically study the indirect interaction between a magnon mode and a cavity photon mode mediated by travelling photons of a waveguide. From a general Hamiltonian, we derive the effective coupling strength between two separated modes, and obta
Externí odkaz:
http://arxiv.org/abs/1912.05478
Autor:
Wang, Yi-Pu, Rao, J. W., Yang, Y., Xu, Peng-Chao, Gui, Y. S., Yao, B. M., You, J. Q., Hu, C. -M.
We reveal the cooperative effect of coherent and dissipative magnon-photon couplings in an open cavity magnonic system, which leads to nonreciprocity with a considerably large isolation ratio and flexible controllability. Furthermore, we discover uni
Externí odkaz:
http://arxiv.org/abs/1908.07907
Publikováno v:
Phys. Rev. B 100, 094415 (2019)
We investigate long-range coherent and dissipative coupling between two spatially separated magnets while both are coupled to a microwave cavity. A careful examination of the system shows that the indirect interaction between two magnon modes is depe
Externí odkaz:
http://arxiv.org/abs/1907.06783
The collective excitation of ordered spins, known as spin waves or magnons, can in principle radiate by emitting travelling photons to an open system when decaying to the ground state. However, in contrast to the electric dipoles, magnetic dipoles co
Externí odkaz:
http://arxiv.org/abs/1902.06795