Concurrence introduced by Hill and Wootters [Phys. Rev. Lett. 78, 5022 (1997)], provides an important measure of entanglement for a general pair qubits that is strictly positive entangled states vanishes all separable states. We present extension to continuous variable multiple degrees freedom generalizing the Lagrange's identity wedge product framework proposed Bhaskara et al. [Quantum Inf. Pr...

Abstract Up until now, ground state cooling using optomechanical interaction is realized in the regime where optical dissipation higher than mechanical dissipation. Here, we demonstrate that a continuous system possible by backward Brillouin scattering while exceeds which common case waveguides. The achieved an anti-Stokes process modulating intensity of coupling via pulsed pump to suppress hea...

Suppose we want to benchmark a quantum device held by remote party, e.g. testing its ability carry out challenging measurements outside of free set $\mathcal{M}$. A very simple way do so is up binary state discrimination task that cannot be solved efficiently means measurements. If one can find pairs orthogonal states become arbitrarily indistinguishable under in $\mathcal{M}$, the sense error ...

Abstract Thermodynamic resources, beyond their well-known usefulness in work extraction and other thermodynamic tasks, are often important also tasks that not evidently thermodynamic. Here we develop a framework for identifying such resources diverse applications of bosonic continuous-variable systems. Introducing the class linear thermal operations to model operationally feasible processes, ap...