Accessibility Tools

Theoretical Physics Seminar

Theoretical Physics Seminar Stacjonarnie

Cavity magnonics with domain walls in insulating ferromagnetic wires

14-05-2024 12:00 - 13:00
Institute of Physics PAS, Room D, Building I
Dr. Mircea Trif, prof. IFPAN
Institute of Physics PAS
Room D (Building I)

Magnetic domain walls (DWs) are topological defects that exhibit robust low-energy modes that can be harnessed for classical and neuromorphic computing. However, the quantum nature of these modes has been elusive thus far. Using the language of cavity optomechanics, we show how to exploit a geometric Berry-phase interaction between the localized DWs and the extended magnons in short ferromagnetic insulating wires to efficiently cool the DW to its quantum ground state or to prepare nonclassical states exhibiting a negative Wigner function that can be extracted from the power spectrum of the emitted magnons. Moreover, we demonstrate that magnons can mediate long-range entangling interactions between qubits stored in distant DWs, which could facilitate the implementation of a universal set of quantum gates. Our proposal relies only on the intrinsic degrees of freedom of the ferromagnet, and can be
naturally extended to explore the quantum dynamics of DWs in ferrimagnets and antiferromagnets, as well as quantum vortices or skyrmions confined in insulating magnetic nanodisks.


List of Dates (Page event details)

  • 14-05-2024 12:00 - 13:00
Cookies user preferences
We use cookies to ensure you to get the best experience on our website. If you decline the use of cookies, this website may not function as expected.
Accept all
Decline all
Read more
Essential cookies
These cookies are necessary for the correct operation of the website and therefore cannot be disabled on this level; the use of these cookies does not involve the processing of personal data. While you can disable them via your browser settings, doing so may prevent the website from working normally.
Analytical cookies
These cookies are particularly intended to enable the website administrator to monitor the website traffic statistics, as well as the sources of traffic. Such data is typically collected anonymously.
Google Analytics