QPIP minimal client quantum capabilities It is conjectured that classical (BPP) client blind quantum computing is implausible according to Aaronson et al:

https://www.researchgate.net/publication/316538667_On_the_implausibility_of_classical_client_blind_quantum_computing

What are the minimal quantum capabilities that a classical client must have in order to verify a single BQP quantum prover with the following requirements?


Information-secure communication (no cryptographic assumptions)
Only the size of the input is revealed to the quantum prover
Single prover server


My understanding is that the paper above leaves this as an open problem.
According to this paper:

https://arxiv.org/pdf/1509.09180.pdf

The client only needs the ability to prepare random single-qubit pure states.

You may also look at this paper for more information:

https://link.springer.com/article/10.1007/s00224-018-9872-3