Can complex quantum operations be perfectly replicated given only limited information about how they work? New measurements demonstrate random, all-to-all two-local circuits undergo a clear shift in learnability at approximately log₂n + log₂(log₂n) layers deep. This precise threshold improves upon previous methods which struggled to accurately represent these systems and offers insights into building more secure cryptography.
California Team Finds Shallow Circuits Become Learnable at Specific Depth
Can complex quantum operations be perfectly replicated given only limited information about how they work? New measurements demonstrate random, all-to-all two-local circuits undergo a clear shift in learnability at approximately log₂n + log₂(log₂n) layers deep. This precise threshold improves upon previous methods which struggled to accurately represent these systems and offers insights into building more secure cryptography.