Loophole-free Bell test with one atom and less than one photon on average

Loophole-free Bell test with one atom and less than one photon on average

We consider the entanglement between two internal states of a single atom and two photon number states describing either the vaccum or a single photon and thus containing, on average, less than one photon. We show that this intriguing entanglement can be characterized through substantial violations...

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Veröffentlicht in:Physical review. A 2011-11, Vol.84 (5), Article 052122
Hauptverfasser: Sangouard, N., Bancal, J.-D., Gisin, N., Rosenfeld, W., Sekatski, P., Weber, M., Weinfurter, H.
Format: Artikel
Sprache:eng
Schlagworte:
ATOMIC AND MOLECULAR PHYSICS
ATOMS
BELL THEOREM
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
OPTICAL MODES
PHOTONS
Physics
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS
Quantum Physics
QUANTUM STATES
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container_issue 5
container_start_page
container_title Physical review. A
container_volume 84
creator Sangouard, N.
Bancal, J.-D.
Gisin, N.
Rosenfeld, W.
Sekatski, P.
Weber, M.
Weinfurter, H.
description We consider the entanglement between two internal states of a single atom and two photon number states describing either the vaccum or a single photon and thus containing, on average, less than one photon. We show that this intriguing entanglement can be characterized through substantial violations of a Bell inequality by performing homodyne detections on the optical mode. We present the experimental challenges that need to be overcome to pave the way towards a loophole-free Bell test in this setup.
doi_str_mv 10.1103/PhysRevA.84.052122
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source American Physical Society Journals
subjects ATOMIC AND MOLECULAR PHYSICS
ATOMS
BELL THEOREM
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
OPTICAL MODES
PHOTONS
Physics
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS
Quantum Physics
QUANTUM STATES
title Loophole-free Bell test with one atom and less than one photon on average
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