Experiment towards continuous-variable entanglement swapping: Highly correlated four-partite quantum state

Glöckl O, Lorenz S, Marquardt C, Heersink J, Brownnutt M, Silberhorn C, Pan Q, van Loock P, Korolkova N, Leuchs G (2003)

Publication Language: English

Publication Type: Journal article

Publication year: 2003

Journal

Book Volume: 68

Pages Range: 012319

URI: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.68.012319

DOI: 10.1103/PhysRevA.68.012319

Abstract

We present a protocol for performing entanglement swapping with intense pulsed beams. In a first step, the generation of amplitude correlations between two systems that have never interacted directly is demonstrated. This is verified in direct detection with electronic modulation of the detected photocurrents. The measured correlations are better than expected from a classical reconstruction scheme. In an entanglement swapping process, a four-partite entangled state is generated. We prove experimentally that the amplitudes of the four optical modes are quantum correlated 3 dB below shot noise, which is consistent with the presence of genuine four-party entanglement.

Authors with CRIS profile

Involved external institutions

Shanxi University (SXU) / 山西大学 China (CN)

How to cite

APA:

Glöckl, O., Lorenz, S., Marquardt, C., Heersink, J., Brownnutt, M., Silberhorn, C.,... Leuchs, G. (2003). Experiment towards continuous-variable entanglement swapping: Highly correlated four-partite quantum state. Physical Review A - Atomic, Molecular, and Optical Physics, 68, 012319. https://doi.org/10.1103/PhysRevA.68.012319

MLA:

Glöckl, Oliver, et al. "Experiment towards continuous-variable entanglement swapping: Highly correlated four-partite quantum state." Physical Review A - Atomic, Molecular, and Optical Physics 68 (2003): 012319.

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