Details
| Original language | English |
|---|---|
| Article number | 160502 |
| Number of pages | 7 |
| Journal | Physical review letters |
| Volume | 123 |
| Issue number | 16 |
| Early online date | 14 Oct 2019 |
| Publication status | Published - 18 Oct 2019 |
Abstract
Transferring entangled states between photon pairs is essential in quantum communication. Semiconductor quantum dots are the leading candidate for generating polarization-entangled photons deterministically. Here we show for the first time swapping of entangled states between two pairs of photons emitted by a single dot. A joint Bell measurement heralds the successful generation of the Bell state Ψ^{+}, yielding a fidelity of 0.81±0.04 and violating the CHSH and Bell inequalities. Our photon source matches atomic quantum memory frequencies, facilitating implementation of hybrid quantum repeaters.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical review letters, Vol. 123, No. 16, 160502, 18.10.2019.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Entanglement Swapping with Semiconductor-Generated Photons Violates Bell's Inequality
AU - Zopf, Michael
AU - Keil, Robert
AU - Chen, Yan
AU - Yang, Jingzhong
AU - Chen, Disheng
AU - Ding, Fei
AU - Schmidt, Oliver G.
N1 - Funding Information: We acknowledge funding by the BMBF (Q.com) and the European Research Council (QD-NOMS). F. D. acknowledges support by the IFW Excellence Program. We thank Wenjamin Rosenfeld (LMU München), Tobias Macha (Universität Bonn), Matthew T. Eiles (MPIPKS Dresden), and Franz J. F. Löchner (FSU Jena) for fruitful discussions.
PY - 2019/10/18
Y1 - 2019/10/18
N2 - Transferring entangled states between photon pairs is essential in quantum communication. Semiconductor quantum dots are the leading candidate for generating polarization-entangled photons deterministically. Here we show for the first time swapping of entangled states between two pairs of photons emitted by a single dot. A joint Bell measurement heralds the successful generation of the Bell state Ψ^{+}, yielding a fidelity of 0.81±0.04 and violating the CHSH and Bell inequalities. Our photon source matches atomic quantum memory frequencies, facilitating implementation of hybrid quantum repeaters.
AB - Transferring entangled states between photon pairs is essential in quantum communication. Semiconductor quantum dots are the leading candidate for generating polarization-entangled photons deterministically. Here we show for the first time swapping of entangled states between two pairs of photons emitted by a single dot. A joint Bell measurement heralds the successful generation of the Bell state Ψ^{+}, yielding a fidelity of 0.81±0.04 and violating the CHSH and Bell inequalities. Our photon source matches atomic quantum memory frequencies, facilitating implementation of hybrid quantum repeaters.
U2 - 10.15488/5545
DO - 10.15488/5545
M3 - Article
C2 - 31702338
AN - SCOPUS:85073816039
VL - 123
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 16
M1 - 160502
ER -