Rate-optimal Coded Quantum Networks, Eavesdropping and more:
We encode k qubits of quantum information over an n-node network, in a distributed fashion with one qubit per node. A procedure is devised to recover the encoded information from a quantum coded network using modified graph state codes that saturate the quantum Singleton bound and resilient to single node failure. Insights into rate-optimal coded quantum network designs  are provided.
Also, the advantage of quantum coding over graph states resilient to single node failure is explored in . Further, graph state codes are explored within the context of node recovery from an eavesdropping attack .
 P. J. Nadkarni, A. Raina and S. S. Garani, “Modified graph-state codes for single-node recovery in quantum distributed storage” in Physical Review A 102 (6), 062430, 2020.
 A. Raina, P. J. Nadkarni, and S. S. Garani, “Recovery of quantum information from a node failure in a graph”, Quantum Info. Proc., vol. 19, no. 2, Feb. 2020.
 A. Raina and S. S. Garani, “Recovery from an eavesdropping attack on a qubit of a graph state”, Quantum Info. Proc., vol. 18, no. 9, Sep. 2019.
Faculty: Shayan Srinivasa Garani, ESE