Exploiting the time loophole for the BPT bound in 1D. When I used to do these things, I always wondered whether there was a time dependent Hamiltonian that was a self-correcting memory in 2D. One would need to reason about what self correction means for a time dependent Hamiltonians.
Reposted from
Craig Gidney
If qubits only talk to 1D neighbors, is constant rate fault tolerance possible?
Last year I referee'd a paper claiming it wasn't. My review was "this is wrong but the constructive disproof is too large for this review".
Clearly a reviewer 2 move. Sorry. But I was right! scirate.com/arxiv/2502.1...
Last year I referee'd a paper claiming it wasn't. My review was "this is wrong but the constructive disproof is too large for this review".
Clearly a reviewer 2 move. Sorry. But I was right! scirate.com/arxiv/2502.1...
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