Can two servers do ORAM in constant rounds? DuetORAM says yes, with O(log N) communication and a shuffle trick.

Concurrency in ORAM, apparently, is the trick here: SONIC targets TEEs with low-latency, high-throughput tree ORAM.

Private ANN search on embeddings with multi-graph HNSW, binary codes, and randomized response, since HE was too slow.