title: Counterfactual quantum-information transfer without transmitting any physical particles.
abstract: We demonstrate quantum information can be transferred between two distant participants without any physical particles traveling between them. The key procedure of the counterfactual scheme is to entangle two nonlocal qubits with each other without interaction, so the scheme can also be used to generate nonlocal entanglement counterfactually. We here illustrate the scheme by using flying photon qubits and Rydberg atom qubits assisted by a mesoscopic atomic ensemble. Unlike the typical teleportation, the present scheme can transport an unknown qubit in a nondeterministic manner without prior entanglement sharing or classical communication between the two distant participants.
authors: 1] Department of Physics, Harbin Institute of Technology, Harbin 150001, China [2] Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China.
authors: Qi
authors: Q
authors: Guo
authors: Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
authors: Liu-Yong
authors: LY
authors: Cheng
authors: Department of Applied Physics, Changchun University, Changchun 130022, China.
authors: Li
authors: L
authors: Chen
authors: Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China.
authors: Hong-Fu
authors: HF
authors: Wang
authors: 1] Department of Physics, Harbin Institute of Technology, Harbin 150001, China [2] Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China.
authors: Shou
authors: S
authors: Zhang