  Circuit cutting, the partitioning of quantum circuits into smaller
independent fragments, has become a promising avenue for scaling up current
quantum-computing experiments. Here, we introduce a scheme for joint cutting of
two-qubit rotation gates based on a virtual gate-teleportation protocol. By
that, we significantly lower the previous upper bounds on the sampling overhead
and prove optimality of the scheme. Furthermore, we show that no classical
communication between the circuit partitions is required. For parallel
two-qubit rotation gates we derive an optimal ancilla-free decomposition, which
include CNOT gates as a special case.
