Abstract
We consider the question of whether it is possible to use the entanglement between spatially separated modes of massive particles to observe nonlocal quantum correlations. Mode entanglement can be obtained using a single particle, indicating that it requires careful consideration before concluding whether experimental observation-e.g., violation of Bell inequalities-is possible or not. In the simplest setups analogous to optics experiments, that observation is prohibited by fundamental conservation laws. However, we show that using auxiliary particles, mode entanglement can be converted into forms that allow the observation of quantum nonlocality. The probability of successful conversion depends on the nature and number of auxiliary particles used. In particular, we find that an auxiliary Bose-Einstein condensate allows the conversion arbitrarily many times with a small error that depends only on the initial state of the condensate.
| Original language | English |
|---|---|
| Article number | 022108 |
| Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
| Volume | 75 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 27 Feb 2007 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
Cite this
Observing quantum nonlocality in the entanglement between modes of massive particles. / Ashhab, Sahel; Maruyama, Koji; Nori, Franco.
In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 75, No. 2, 022108, 27.02.2007.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Observing quantum nonlocality in the entanglement between modes of massive particles
AU - Ashhab, Sahel
AU - Maruyama, Koji
AU - Nori, Franco
PY - 2007/2/27
Y1 - 2007/2/27
N2 - We consider the question of whether it is possible to use the entanglement between spatially separated modes of massive particles to observe nonlocal quantum correlations. Mode entanglement can be obtained using a single particle, indicating that it requires careful consideration before concluding whether experimental observation-e.g., violation of Bell inequalities-is possible or not. In the simplest setups analogous to optics experiments, that observation is prohibited by fundamental conservation laws. However, we show that using auxiliary particles, mode entanglement can be converted into forms that allow the observation of quantum nonlocality. The probability of successful conversion depends on the nature and number of auxiliary particles used. In particular, we find that an auxiliary Bose-Einstein condensate allows the conversion arbitrarily many times with a small error that depends only on the initial state of the condensate.
AB - We consider the question of whether it is possible to use the entanglement between spatially separated modes of massive particles to observe nonlocal quantum correlations. Mode entanglement can be obtained using a single particle, indicating that it requires careful consideration before concluding whether experimental observation-e.g., violation of Bell inequalities-is possible or not. In the simplest setups analogous to optics experiments, that observation is prohibited by fundamental conservation laws. However, we show that using auxiliary particles, mode entanglement can be converted into forms that allow the observation of quantum nonlocality. The probability of successful conversion depends on the nature and number of auxiliary particles used. In particular, we find that an auxiliary Bose-Einstein condensate allows the conversion arbitrarily many times with a small error that depends only on the initial state of the condensate.
UR - http://www.scopus.com/inward/record.url?scp=33847616007&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33847616007&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.75.022108
DO - 10.1103/PhysRevA.75.022108
M3 - Article
AN - SCOPUS:33847616007
VL - 75
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 2
M1 - 022108
ER -