From Levitated Nanomagnets to Quantum Magnonics (Cosimo Carlo Rusconi)

From Levitated Nanomagnets to Quantum Magnonics (Cosimo Carlo Rusconi)

  • Date: Oct 17, 2018
  • Time: 10:30 AM - 12:00 PM (Local Time Germany)
  • Speaker: Cosimo Carlo Rusconi
  • Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences
  • Location: Max-Planck-Institut für Quantenoptik
  • Room: New Lecture Hall, Room B 0.32
  • Host: MPQ, Theory Division
In this talk, I will present our results concerning how to describe and use the quantum degrees of freedom of a levitated nanomagnet.

A theoretical model based on a quantum rigid rotor with a spin will be introduced to describe the quantum dynamics of the nanomagnet near an equilibrium point. Then, I will discuss how a non-rotating magnet can be stably levitated, despite Earnshaw's theorem, due to the quantum spin origin of its magnetization (gyromagnetic effect). Finally, I will propose applications of levitated magnets ranging from inertial and forces sensing, to the engineering of artificial quantum magnonic crystals that can be interfaced with spin qubits for quantum information science purposes.

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