3 ms·
Why the odd numbers? It seems like it would be simpler to run algorithms on something with 16 or 48 qubits.
by skykooler 9y ago
Why the odd numbers? It seems like it would be simpler to run algorithms on something with 16 or 48 qubits.
- diamonddogs 9y agoThe numbers come from quantum error correction and the goal to build a logical qubit (error protected qubit made of many actual qubits). In the surface code (planar version of a toric code), a single logical qubit protected with a code distance d = 3 corresponds to 17 physical qubits, and a distance d = 5 corresponds to 49 physical qubits. [1] https://en.wikipedia.org/wiki/Toric_code https://en.wikipedia.org/wiki/Toric_code [2] https://www.nature.com/articles/s41534-016-0004-0 https://www.nature.com/articles/s41534-016-0004-0
- amatus 9y agoThe number of physical qubits is 2d^2-1 in case anyone was wondering.