Nonclassical quantum states are the pivotal features of a quantum system that differs from its
classical counterpart. However, the generation and coherent control of quantum states in a …

Generation of entanglement between spatially separated macroscopic systems enables
quantum networks and fundamental tests of quantum theory. Here, we propose a scheme to …

Rigidity of an ordered phase in condensed matter results in collective excitation modes
spatially extending to macroscopic dimensions. A magnon is a quantum of such collective …

We study the generation of a magnon blockade in a single-crystalline yttrium-iron-garnet
(YIG) sphere coupled to a three-dimensional superconducting microwave resonator that …

Recent studies show that hybrid quantum systems based on magnonics provide a new and
promising platform for generating macroscopic quantum states involving a large number of …

We present a scheme to entangle two magnon modes in a cavity magnomechanical system.
The two magnon modes are embodied by collective motions of a large number of spins in …

We propose to directly and quantum-coherently couple a superconducting transmon qubit to
magnons—the quanta of the collective spin excitations, in a nearby magnetic particle. The …

We propose a scheme to entangle two magnon modes via the Kerr nonlinear effect when
driving the systems far from equilibrium. We consider two macroscopic yttrium iron garnets …

We present a scheme to entangle two magnon modes in two macroscopic yttrium-iron-
garnet spheres. The two spheres are placed inside two microwave cavities, which are driven …

Strong long-range coupling between distant spins is crucial for spin-based quantum
information processing. However, achieving such a strong spin-spin coupling remains …