Abstract
Flexible grid wavelength division multiplexing is a powerful tool in lightwave communications to maximize spectral efficiency. In the emerging field of quantum networking, the need for effective resource provisioning is particularly acute, given the generally lower power levels, higher sensitivity to loss, and inapplicability of optical detection and retransmission. In this letter, we leverage flex grid technology to demonstrate reconfigurable distribution of quantum entanglement in a four-user tabletop network. By adaptively partitioning bandwidth with a single wavelength-selective switch, we successfully equalize two-party coincidence rates that initially differ by over two orders of magnitude. Our scalable approach introduces loss that is fixed with the number of users, offering a practical path for the establishment and management of quality-of-service guarantees in large quantum networks.
| Original language | English |
|---|---|
| Pages (from-to) | 329-332 |
| Number of pages | 4 |
| Journal | Optica |
| Volume | 8 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 2021 |
| Externally published | Yes |
Funding
Funding. Oak Ridge National Laboratory (Laboratory Directed Research and Development); U.S. Department of Energy, Office of Science, Advanced Scientific Computing Research (Early Career Research Program); National Science Foundation (1747426-DMR, 1839191-ECCS). Acknowledgment. Preliminary results were presented at CLEO 2020 (FTh5D.2). The authors thank P. Imany, M. Alshowkan, B. Qi, and N. A. Peters for discussions, and N. Knight and O. E. Sandoval for laboratory assistance. A portion of this work was performed at Oak Ridge National Laboratory, operated by UT-Battelle for the U.S. Department of Energyy under contract no. DE-AC05-00OR22725.