Genuine Quantum-Information Processes
Che-Ming Li1,2,3*
1Department of Engineering Science, National Cheng Kung University, Tainan, Taiwan
2Center for Quantum Frontiers of Research & Technology, National Cheng Kung University, Tainan, Taiwan
3Center for Quantum Technology, National Tsing Hua University, Hsinchu, Taiwan
* Presenter:Che-Ming Li,
Exploring physical processes that cannot be explained using classical physics inspires the question as to how quantum-mechanical effects can be harnessed to perform practical quantum-information tasks. Here, we show that quantum-information processes can be quantified using a generic classical-process model through which any classical strategies of mimicry can be ruled out. New benchmarks for quantum-information processing can also be derived from this formalism, such as quantum storage, quantum teleportation, and quantum key distribution as well as one-way quantum computation. As a concrete example, we experimentally demonstrate how to measure genuine quantum-information processes of remotely preparing photonic qubits. We also illustrate the transition from classical to quantum remote qubit preparation for photonic quantum systems. Our results provide an approach for the identification of quantum dynamical processes and facilitate the classification of quantum-information processing.

Keywords: Quantum communication, Quantum computation, Photon pairs & parametric down-conversion, Quantum states of light, Quantum correlations in quantum information