Experimental demonstration of quantum correlations over more than 10 km

Abstract

Energy and time entangled photons at a wavelength of 1310 nm are produced by parametric downconversion in a KNbO3 crystal and are sent into all-fiber interferometers using a telecom fiber network. The two interferometers of this Franson-type test of the Bell-inequality are located 10.9 km apart from one another. Two-photon fringe visibilities of up to 81.6 % are obtained. These strong nonlocal correlations support the nonlocal predictions of quantum mechanics and provide evidence that entanglement between photons can be maintained over long distances.

5 pages, REVTeX, 3 postscript figures included

References in corpus (6)

• Entanglement of Formation of an Arbitrary State of Two Qubits
• Experimental quantum teleportation
• Trapping of single atoms in cavity QED
• Quantum state transfer between motion and light
• Coherent eavesdropping strategies for the 4-state quantum cryptography protocol
• Non-local two-photon correlations using interferometers physically separated by 35 meters

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