TY  - JOUR
AU  - Takesue, Hiroki
AU  - Dyer, Shellee D.
AU  - Stevens, Martin J.
AU  - Verma, Varun
AU  - Mirin, Richard P.
AU  - Nam, Sae Woo
PY  - 2015
DA  - 2015//
TI  - Quantum teleportation over 100 km of fiber using highly efficient superconducting nanowire single-photon detectors
T2  - Optica
VL  - 2
AB  - 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%.
UR  - https://doi.org/10.1364/OPTICA.2.000832
DO  - 10.1364/OPTICA.2.000832
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1004), last updated on Mon, 28 Sep 2015 13:31:48 -0500
ID  - Takesue_etal2015
ER  -