Room-temperature single-photon source with near-millisecond built-in memory
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Standard
Room-temperature single-photon source with near-millisecond built-in memory. / Dideriksen, Karsten B.; Schmieg, Rebecca; Zugenmaier, Michael; Polzik, Eugene S.
I: Nature Communications, Bind 12, Nr. 1, 3699, 17.06.2021.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Room-temperature single-photon source with near-millisecond built-in memory
AU - Dideriksen, Karsten B.
AU - Schmieg, Rebecca
AU - Zugenmaier, Michael
AU - Polzik, Eugene S.
PY - 2021/6/17
Y1 - 2021/6/17
N2 - Non-classical photon sources are a crucial resource for distributed quantum networks. Photons generated from matter systems with memory capability are particularly promising, as they can be integrated into a network where each source is used on-demand. Among all kinds of solid state and atomic quantum memories, room-temperature atomic vapours are especially attractive due to their robustness and potential scalability. To-date room-temperature photon sources have been limited either in their memory time or the purity of the photonic state. Here we demonstrate a single-photon source based on room-temperature memory. Following heralded loading of the memory, a single photon is retrieved from it after a variable storage time. The single-photon character of the retrieved field is validated by the strong suppression of the two-photon component with antibunching as low as g(RR|W=1)((2)) = 0:20 +/- 0:07. Non-classical correlations between the heralding and the retrieved photons are maintained for up to tau(R)(NC) = (0:68 +/- 0:08) ms, more than two orders of magnitude longer than previously demonstrated with other room-temperature systems. Correlations sufficient for violating Bell inequalities exist for up to tau(BI) = (0.15 +/- 0.03) ms.
AB - Non-classical photon sources are a crucial resource for distributed quantum networks. Photons generated from matter systems with memory capability are particularly promising, as they can be integrated into a network where each source is used on-demand. Among all kinds of solid state and atomic quantum memories, room-temperature atomic vapours are especially attractive due to their robustness and potential scalability. To-date room-temperature photon sources have been limited either in their memory time or the purity of the photonic state. Here we demonstrate a single-photon source based on room-temperature memory. Following heralded loading of the memory, a single photon is retrieved from it after a variable storage time. The single-photon character of the retrieved field is validated by the strong suppression of the two-photon component with antibunching as low as g(RR|W=1)((2)) = 0:20 +/- 0:07. Non-classical correlations between the heralding and the retrieved photons are maintained for up to tau(R)(NC) = (0:68 +/- 0:08) ms, more than two orders of magnitude longer than previously demonstrated with other room-temperature systems. Correlations sufficient for violating Bell inequalities exist for up to tau(BI) = (0.15 +/- 0.03) ms.
KW - ELECTROMAGNETICALLY INDUCED TRANSPARENCY
KW - QUANTUM MEMORY
KW - ATOMIC ENSEMBLES
KW - STATE
KW - COMMUNICATION
KW - SUPPRESSION
KW - VAPOR
U2 - 10.1038/s41467-021-24033-8
DO - 10.1038/s41467-021-24033-8
M3 - Journal article
C2 - 34140508
VL - 12
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
M1 - 3699
ER -
ID: 276379819