|
| related topics |
| {light, field, probe} |
| {state, states, coherent} |
| {state, phys, rev} |
| {photon, photons, single} |
| {bell, inequality, local} |
| {entanglement, phys, rev} |
| {alice, bob, state} |
| {state, states, entangled} |
| {measurement, state, measurements} |
|
Experiment towards continuous-variable entanglement swapping: Highly
correlated four-partite quantum state
Oliver Glöckl, Stefan Lorenz, Christoph Marquardt, Joel Heersink, Michel Brownnutt, Christine Silberhorn, Qing Pan, Peter van Loock, Natalia Korolkova, Gerd Leuchs
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 the 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 due to the potential four--party entanglement.
- oai_identifier:
- oai:arXiv.org:quant-ph/0302068
- categories:
- quant-ph
- comments:
- 9 pages, 10 figures, update of references 9 and 10; minor
inconsistency in notation removed; format for units in the figures changed
- doi:
- 10.1103/PhysRevA.68.012319
- arxiv_id:
- quant-ph/0302068
- journal_ref:
- Phys. Rev. A 68, 012319 (2003)
- created:
- 2003-02-10
- updated:
- 2003-05-30
Full article ▸
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