Tightness conjecture for quantum speed-limit bounds under symplectic and special unitary-product controls
Consider finite-dimensional quantum control systems with control schemes given by Sp(n2)\text{Sp}(\frac{n}{2})Sp(2n) and S(U(p)×U(q))\text{S}(\text{U}(p)\times\text{U}(q))S(U(p)×U(q)), and let the corresponding a…