A Caltech Library Service

Illinois Express Quantum Network (IEQNET): metropolitan-scale experimental quantum networking over deployed optical fiber

Chung, Joaquin and Kanter, Gregory and Lauk, Nikolai and Valivarthi, Raju and Wu, Wenji and Ceballos, Russell R. and Peña, Cristián and Sinclair, Neil and Thomas, Jordan and Xie, Si and Kettimuthul, Rajkumar and Kumar, Prem and Spentzouris, Panagiotis and Spiropulu, Maria (2021) Illinois Express Quantum Network (IEQNET): metropolitan-scale experimental quantum networking over deployed optical fiber. In: Quantum Information Science, Sensing, and Computation XIII. Proceedings of SPIE. No.11726. Society of Photo-optical Instrumentation Engineers , Bellingham, WA, Art. No. 1172602.

[img] PDF - Published Version
See Usage Policy.

[img] PDF - Submitted Version
Creative Commons Attribution.


Use this Persistent URL to link to this item:


The Illinois Express Quantum Network (IEQNET) is a program to realize metro-scale quantum networking over deployed optical fiber using currently available technology. IEQNET consists of multiple sites that are geographically dispersed in the Chicago metropolitan area. Each site has one or more quantum nodes (Qnodes) representing the communication parties in a quantum network. Q-nodes generate or measure quantum signals such as entangled photons and communicate the results via standard, classical, means. The entangled photons in IEQNET nodes are generated at multiple wavelengths, and are selectively distributed to the desired users via optical switches. Here we describe the network architecture of IEQNET, including the Internet-inspired layered hierarchy that leverages software-defined-networking (SDN) technology to perform traditional wavelength routing and assignment between the Q-nodes. Specifically, SDN decouples the control and data planes, with the control plane being entirely classical. Issues associated with synchronization, calibration, network monitoring, and scheduling will be discussed. An important goal of IEQNET is demonstrating the extent to which the control plane can coexist with the data plane using the same fiber lines. This goal is furthered by the use of tunable narrow-band optical filtering at the receivers and, at least in some cases, a wide wavelength separation between the quantum and classical channels. We envision IEQNET to aid in developing robust and practical quantum networks by demonstrating metro-scale quantum communication tasks such as entanglement distribution and quantum-state teleportation.

Item Type:Book Section
Related URLs:
URLURL TypeDescription Paper
Lauk, Nikolai0000-0002-6397-1221
Valivarthi, Raju0000-0002-5422-9340
Peña, Cristián0000-0002-4500-7930
Xie, Si0000-0003-2509-5731
Spiropulu, Maria0000-0001-8172-7081
Additional Information:© 2021 Society of Photo-Optical Instrumentation Engineers (SPIE). IEQNET is funded by the Department of Energy’s Advanced Scientific Computing Research Transparent Optical Quantum Networks for Distributed Science program, but no government endorsement is implied.
Funding AgencyGrant Number
Department of Energy (DOE)UNSPECIFIED
Series Name:Proceedings of SPIE
Issue or Number:11726
Record Number:CaltechAUTHORS:20211021-203239861
Persistent URL:
Official Citation:Joaquin Chung, Gregory Kanter, Nikolai Lauk, Raju Valivarthi, Wenji Wu, Russell R. Ceballos, Cristián Peña, Neil Sinclair, Jordan Thomas, Si Xie, Rajkumar Kettimuthu, Prem Kumar, Panagiotis Spentzouris, and Maria Spiropulu "Illinois Express Quantum Network (IEQNET): metropolitan-scale experimental quantum networking over deployed optical fiber", Proc. SPIE 11726, Quantum Information Science, Sensing, and Computation XIII, 1172602 (12 April 2021);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:111586
Deposited By: Tony Diaz
Deposited On:23 Oct 2021 00:29
Last Modified:25 Oct 2021 17:47

Repository Staff Only: item control page