The concurrent rise of artificial intelligence and quantum information poses an opportunity
for creating interdisciplinary technologies like quantum neural networks. Quantum reservoir …

I theoretically investigate how the entanglement properties of a two-mode squeezed vacuum
state (TMSVS) can be enhanced by operating quantum-optical catalysis on each mode of …

The entanglement produced by a bilinear Hamiltonian in continuous variables has been
thoroughly studied and widely used. In contrast, the physics of entanglement resulting from …

A standard method to obtain information on a quantum state is to measure marginal
distributions along many different axes in phase space, which forms a basis of quantum …

We propose an experimental scheme for entangling two macroscopic mechanical
resonators (movable mirrors) by their coupling to the two-mode fields of a correlated …

No-cloning theorem, a profound fundamental principle of quantum mechanics, also provides
a crucial practical basis for secure quantum communication. The security of communication …

We consider how to quantify non-Gaussianity for the correlation of a bipartite quantum state
by using various measures such as relative entropy and geometric distances. We first show …

Entanglement and non-Gaussianity are physical resources that are essential for a large
number of quantum-optics protocols. Non-Gaussian entanglement is indispensable for …

We study the task of distilling entanglement by a coherent superposition operation ta ̂+ ra
̂† applied to a continuous-variable state under a thermal noise. In particular, we compare …

We introduce a measure of quantum non-Gaussianity (QNG) for those quantum states not
accessible by a mixture of Gaussian states in terms of quantum relative entropy. Specifically …