Robust quantum repeater with atomic ensembles against phase and polarization instability
Ming Gao, Lin-Mei Liang, Cheng-Zu Li, Xiang‐Bin Wang · Physical Review A · 2009
We propose an alternative scheme for quantum repeater without phase stabilization and polarization calibration of photons transmitted over long-distance channel. We introduce time-bin photonic states and use a two-photon interference configuration to robustly generate entanglement between distant atomic-ensemble-based memory qubits. Our scheme can be performed with current experimental setups through making some simple adjustments.