%0 Journal Article
%T Quantum teleportation over 100 km of fiber using highly efficient superconducting nanowire single-photon detectors
%A Takesue, Hiroki
%A Dyer, Shellee D.
%A Stevens, Martin J.
%A Verma, Varun
%A Mirin, Richard P.
%A Nam, Sae Woo
%D 2015
%V 2
%F Takesue_etal2015
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=1004), last updated on Mon, 28 Sep 2015 13:31:48 -0500
%X Quantum teleportation is an essential quantum operation by which we can transfer an unknown quantum state to a remote location with the help of quantum entanglement and classical communication. Since the first experimental demonstrations using photonic qubits and continuous variables, the distance of photonic quantum teleportation over free-space channels has continued to increase and has reached >100 km. On the other hand, quantum teleportation over optical fiber has been challenging, mainly because the multifold photon detection that inevitably accompanies quantum teleportation experi- ments has been very inefficient due to the relatively low de- tection efficiencies of typical telecom-band single-photon detectors. Here, we report on quantum teleportation over optical fiber using four high-detection-efficiency supercon- ducting nanowire single-photon detectors (SNSPDs). These SNSPDs make it possible to perform highly efficient multi- fold photon measurements, allowing us to confirm that the quantum states of input photons were successfully tele- ported over 100 km of fiber with an average fidelity of 83.7 
 2.0%.
%R 10.1364/OPTICA.2.000832
%U https://doi.org/10.1364/OPTICA.2.000832