Details
| Original language | English |
|---|---|
| Article number | eadn8907 |
| Number of pages | 7 |
| Journal | Science advances |
| Volume | 10 |
| Issue number | 30 |
| Early online date | 26 Jul 2024 |
| Publication status | Published - Jul 2024 |
Abstract
Fiber-optical networks are well established to accommodate global data traffic via coherent information transmission. The next generation of telecommunications will require the integration of quantum information into fiber-optic networks, e.g., for quantum key distribution. A promising and scalable route to enable quantum networking is encoding quantum information into the frequency of photons. While the cointegration of frequency-entangled photons with coherent information transmission is achieved via spectral multiplexing, more resource-efficient approaches are required. In this work, we introduce and experimentally demonstrate a transceiver concept that enables the transmission of coherent and frequency-entangled photons over a single-frequency channel. Our concept leverages the serrodyne technique via electro-optic phase modulation leading to very different dynamics for entangled and coherent photons. This enables temporal multiplexing of the respective signals. We demonstrate the preservation of entanglement over the channel in the presence of coherent light. Our approach reveals a strong potential for efficient bandwidth use in hybrid networks.
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In: Science advances, Vol. 10, No. 30, eadn8907, 07.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Quantum and coherent signal transmission on a single-frequency channel via the electro-optic serrodyne technique
AU - Rübeling, Philip
AU - Heine, Jan
AU - Johanning, Robert
AU - Kues, Michael
N1 - Publisher Copyright: Copyright © 2024 The Authors, some rights reserved.
PY - 2024/7
Y1 - 2024/7
N2 - Fiber-optical networks are well established to accommodate global data traffic via coherent information transmission. The next generation of telecommunications will require the integration of quantum information into fiber-optic networks, e.g., for quantum key distribution. A promising and scalable route to enable quantum networking is encoding quantum information into the frequency of photons. While the cointegration of frequency-entangled photons with coherent information transmission is achieved via spectral multiplexing, more resource-efficient approaches are required. In this work, we introduce and experimentally demonstrate a transceiver concept that enables the transmission of coherent and frequency-entangled photons over a single-frequency channel. Our concept leverages the serrodyne technique via electro-optic phase modulation leading to very different dynamics for entangled and coherent photons. This enables temporal multiplexing of the respective signals. We demonstrate the preservation of entanglement over the channel in the presence of coherent light. Our approach reveals a strong potential for efficient bandwidth use in hybrid networks.
AB - Fiber-optical networks are well established to accommodate global data traffic via coherent information transmission. The next generation of telecommunications will require the integration of quantum information into fiber-optic networks, e.g., for quantum key distribution. A promising and scalable route to enable quantum networking is encoding quantum information into the frequency of photons. While the cointegration of frequency-entangled photons with coherent information transmission is achieved via spectral multiplexing, more resource-efficient approaches are required. In this work, we introduce and experimentally demonstrate a transceiver concept that enables the transmission of coherent and frequency-entangled photons over a single-frequency channel. Our concept leverages the serrodyne technique via electro-optic phase modulation leading to very different dynamics for entangled and coherent photons. This enables temporal multiplexing of the respective signals. We demonstrate the preservation of entanglement over the channel in the presence of coherent light. Our approach reveals a strong potential for efficient bandwidth use in hybrid networks.
UR - http://www.scopus.com/inward/record.url?scp=85199723932&partnerID=8YFLogxK
U2 - 10.1126/sciadv.adn8907
DO - 10.1126/sciadv.adn8907
M3 - Article
C2 - 39058776
AN - SCOPUS:85199723932
VL - 10
JO - Science advances
JF - Science advances
SN - 2375-2548
IS - 30
M1 - eadn8907
ER -