Entanglement distribution over 300 km of fiber
نویسندگان
چکیده
منابع مشابه
Distribution of time-energy entanglement over 100 km fiber using superconducting single-photon detectors.
In this letter, we report an experimental realization of distributing entangled photon pairs over 100 km of dispersion-shifted fiber. In the experiment, we used a periodically poled lithium niobate waveguide to generate the time-energy entanglement and superconducting single-photon detectors to detect the photon pairs after 100 km. We also demonstrate that the distributed photon pairs can still...
متن کاملTeleportation of entanglement over 143 km.
As a direct consequence of the no-cloning theorem, the deterministic amplification as in classical communication is impossible for unknown quantum states. This calls for more advanced techniques in a future global quantum network, e.g., for cloud quantum computing. A unique solution is the teleportation of an entangled state, i.e., entanglement swapping, representing the central resource to rel...
متن کاملLong-distance entanglement-based quantum key distribution over optical fiber.
We report the first entanglement-based quantum key distribution (QKD) experiment over a 100-km optical fiber. We used superconducting single photon detectors based on NbN nanowires that provide high-speed single photon detection for the 1.5-mum telecom band, an efficient entangled photon pair source that consists of a fiber coupled periodically poled lithium niobate waveguide and ultra low loss...
متن کاملFeasibility of 300 km Quantum Key Distribution with Entangled States
A significant limitation of practical quantum key distribution (QKD) setups is currently their limited operational range. It has recently been emphasized [1] that entanglement-based QKD systems can tolerate higher channel losses than systems based on weak coherent laser pulses (WCP), in particular when the source is located symmetrically between the two communicating parties, Alice and Bob. In ...
متن کاملFree-Space distribution of entanglement and single photons over 144 km
3 Max-Planck-Institut für Quantenoptik, D-85748 Garching, Germany 4 Department für Physik, Ludwig-Maximilians University, D-80799 Munich, Germany 5 European Space Agency, 2200 AG Noordwijk, The Netherlands 6 Business Unit Quantum Technology, ARC Seibersdorf Research GmbH, A-1220 Vienna, Austria 7 Department of Electrical and Electronic Engineering, University of Bristol, Bristol, BS8 1UB, Unite...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Express
سال: 2013
ISSN: 1094-4087
DOI: 10.1364/oe.21.023241