Table 2. Required Surface Code Distances for Various Active Spaces^a.

	qubitization		Trotterization
no. of spatial orbitals	p = 10–4	p = 10–3	p = 10–4	p = 10–3
14	13	29	17	36
20	14	31	19	39
32	15	32	20	41
42	16	34	21	43
52	17	35	21	43
66	18	37
100	19	39

^aWe consider QPE performed using Trotterization and the full Hamiltonian, and QPE using qubitization and truncating small Hamiltonian elements. Physical error rates (p) of 10^–4 and 10^–3 are considered.