It not exactly a young research area. We have had post-quantum public key cryptosystems based on linear codes for over 40 years.

Classic McEliece (https://classic.mceliece.org) was created in 1978 and is in the 2nd round of NIST's PQ-crypto contest ( https://csrc.nist.gov/projects/post-quantum-cryptography/rou...).

The PQCrypto conference started 13 years ago: https://pqcrypto.org/conferences.html

Chrome ran large scale experiments with NewHope support 3 years ago: https://security.googleblog.com/2016/07/experimenting-with-p...