High-fidelity entanglement between a trapped ion and a telecom photon via quantum frequency conversion
High-fidelity entanglement between a trapped ion and a telecom photon via quantum frequency conversion
Abstract Entanglement between a stationary quantum system and a flying qubit is an essential ingredient of a quantum-repeater network. It has been demonstrated for trapped ions, trapped atoms, color centers in diamond, or quantum dots. These systems have transition wavelengths in the blue, red or near-infrared spectral regions, whereas long-range …