Speaker: Prof. Che-Ming Li,  National Cheng Kung University

Time: 1:20 p.m, 11/16, 2020

Place: R124, Department of Physics

Title: 
Nonclassical Preparation of Quantum Remote States

Abstract:
Remote state preparation (RSP) enables a sender to remotely prepare the quantum 
state of a receiver without sending the state itself. Recently, it has been 
recognized that quantum discord is a necessary resource for RSP. Here, we 
theoretically and experimentally investigate whether RSP can outperform dynamic 
classical remote state preparation processes. We show that such classical processes 
can describe certain RSPs powered by quantum discord. Rather, we argue that a new 
kind of Einstein-Podolsky-Rosen steering for dynamical processes, called quantum 
process steering, is the resource required for performing nonclassical RSP. We show 
how to measure quantum process steering by experimentally realizing nonclassical RSP 
of photonic quantum systems. Moreover, we demonstrate the transition from classical 
to quantum RSP. Our results also have applications in realizing genuine quantum RSP 
for quantum-enabled engineering.