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Programmable frequency-bin quantum states in a nano-engineered silicon device

Articolo
Data di Pubblicazione:
2023
Abstract:
Photonic qubits should be controllable on-chip and noise-tolerant when transmitted over optical networks for practical applications. Furthermore, qubit sources should be programmable and have high brightness to be useful for quantum algorithms and grant resilience to losses. However, widespread encoding schemes only combine at most two of these properties. Here, we overcome this hurdle by demonstrating a programmable silicon nano-photonic chip generating frequency-bin entangled photons, an encoding scheme compatible with long-range transmission over optical links. The emitted quantum states can be manipulated using existing telecommunication components, including active devices that can be integrated in silicon photonics. As a demonstration, we show our chip can be programmed to generate the four computational basis states, and the four maximally-entangled Bell states, of a two-qubits system. Our device combines all the key properties of on-chip state reconfigurability and dense integration, while ensuring high brightness, fidelity, and purity.
Tipologia CRIS:
1.1 Articolo in rivista
Elenco autori:
Clementi, M.; Sabattoli, F. A.; Borghi, M.; Gianini, L.; Tagliavacche, N.; El Dirani, H.; Youssef, L.; Bergamasco, N.; Petit-Etienne, C.; Pargon, E.; Sipe, J. E.; Liscidini, M.; Sciancalepore, C.; Galli, M.; Bajoni, D.
Autori di Ateneo:
BAJONI DANIELE
BORGHI MASSIMO
CLEMENTI MARCO
GALLI MATTEO
LISCIDINI MARCO
SIPE JOHN EDWARD
TAGLIAVACCHE NOEMI
Link alla scheda completa:
https://iris.unipv.it/handle/11571/1477051
Link al Full Text:
https://iris.unipv.it//retrieve/handle/11571/1477051/546522/s41467-022-35773-6.pdf
Pubblicato in:
NATURE COMMUNICATIONS
Journal
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URL

https://www.nature.com/articles/s41467-022-35773-6
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