Demonstration of Einstein-Podolsky-Rosen Steering Using Hybrid Continuous- and Discrete-Variable Entanglement of Light
Adrien Cavaillès, Hanna Le Jeannic, Jérémy Raskop, Giovanni Guccione, Damian Markham, Eleni Diamanti, Matthew D. Shaw, Varun Boehm Verma, Sae Woo Nam, Julien Laurat · Physical Review Letters · 2018
Einstein-Podolsky-Rosen steering is known to be a key resource for one-sided device-independent quantum information protocols. Here we demonstrate steering using hybrid entanglement between continuous- and discrete-variable optical qubits. To this end, we report on suitable steering inequalities and detail the implementation and requirements for this demonstration. Steering is experimentally certified by observing a violation by more than 5 standard deviations. Our results illustrate the potential of optical hybrid entanglement for applications in heterogeneous quantum networks that would interconnect disparate physical platforms and encodings.