The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.
Experimental long-lived entanglement of two macroscopic objects
Open accessAbstract
Entanglement is considered to be one of the most profound features of quantum mechanics. An entangled state of a system consisting of two subsystems cannot be described as a product of the quantum states of the two subsystems. In this sense, the entangled system is considered inseparable and non-local. It is generally believed that entanglement is usually manifest in systems consisting of a small number of microscopic particles. Here we demonstrate experimentally the entanglement of two macroscopic objects, each consisting of a caesium gas sample containing about 1012 atoms. Entanglement is generated via interaction of the samples with a pulse of light, which performs a non-local Bell measurement on the collective spins of the samples. The entangled spin-state can be maintained for 0.5 milliseconds. Besides being of fundamental interest, we expect the robust and long-lived entanglement of material objects demonstrated here to be useful in quantum information processing, including teleportation of quantum states of matter and quantum memory.
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Cites
Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?
Einstein, A., Podolsky, B., & Rosen, N. (1935) · Physical Review · doi:10.1103/physrev.47.777 · Cited by 16,654
Experimental quantum teleportation
Bouwmeester, D., Pan, J.-W., Mattle, K., Eibl, M., Weinfurter, H., & Zeilinger, A. (1997) · Nature · doi:10.1038/37539 · Cited by 5,545 · cited 5×
“value of er exp ξ and the equation (3) from [14] we obtain for the fidelity of teleportation % 55 = F for 12 10 5 .”
BackgroundMethodInfluentialExperimental Test of Bell's Inequalities Using Time- Varying Analyzers
Aspect, A., Dalibard, J., & Roger, G. (1982) · Physical Review Letters · doi:10.1103/physrevlett.49.1804 · Cited by 3,942
Peres-Horodecki Separability Criterion for Continuous Variable Systems
Simon, R. (2000) · Physical Review Letters · doi:10.1103/physrevlett.84.2726 · Cited by 2,245
Inseparability Criterion for Continuous Variable Systems
Duan, L.-M., Giedke, G., Cirac, J. I., & Zoller, P. (2000) · Physical Review Letters · doi:10.1103/physrevlett.84.2722 · Cited by 2,064
Boschi, D., Branca, S., De Martini, F., Hardy, L., & Popescu, S. (1998) · Physical Review Letters · doi:10.1103/physrevlett.80.1121 · Cited by 1,777
Dense Coding in Experimental Quantum Communication
Mattle, K., Weinfurter, H., Kwiat, P. G., & Zeilinger, A. (1996) · Physical Review Letters · doi:10.1103/physrevlett.76.4656 · Cited by 1,342
Cited by
Horodecki, R., Horodecki, P., Horodecki, M., & Horodecki, K. (2009) · Reviews of Modern Physics · doi:10.1103/revmodphys.81.865 · Cited by 10,118
Kimble, H. J. (2008) · Nature · doi:10.1038/nature07127 · Cited by 6,023
Electromagnetically induced transparency: Optics in coherent media
Fleischhauer, M., Imamoglu, A., & Marangos, J. P. (2005) · Reviews of Modern Physics · doi:10.1103/revmodphys.77.633 · Cited by 5,189
Quantum information with continuous variables
Braunstein, S. L., & van Loock, P. (2005) · Reviews of Modern Physics · doi:10.1103/revmodphys.77.513 · Cited by 3,858
Quantum repeaters based on atomic ensembles and linear optics
Sangouard, N., Simon, C., de Riedmatten, H., & Gisin, N. (2011) · Reviews of Modern Physics · doi:10.1103/revmodphys.83.33 · Cited by 1,888
Metadata
- Authors
- Julsgaard, B., Kozhekin, A., & Polzik, E. S.
- Venue
- Nature
- Published
- 2001-09
- Volume
- 413
- Issue
- 6854
- Pages
- 400-403
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- OpenAlex
- W2074093825
- Cited by
- 1,037
- References
- 7
- FWCI
- 71.73
- Type
- journal article
- Language
- en
- Open access
- green
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