TY - JOUR
T1 - Optimal joint cutting of two-qubit rotation gates
AU - Ufrecht, Christian
AU - Herzog, Laura S.
AU - Scherer, Daniel D.
AU - Periyasamy, Maniraman
AU - Rietsch, Sebastian
AU - Plinge, Axel
AU - Mutschler, Christopher
N1 - Publisher Copyright:
© 2024 American Physical Society.
PY - 2024/5
Y1 - 2024/5
N2 - 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. With that, we significantly lower the previous upper bounds on the sampling overhead and prove the 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 includes cnot gates as a special case.
AB - 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. With that, we significantly lower the previous upper bounds on the sampling overhead and prove the 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 includes cnot gates as a special case.
UR - http://www.scopus.com/inward/record.url?scp=85195061880&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.109.052440
DO - 10.1103/PhysRevA.109.052440
M3 - Article
AN - SCOPUS:85195061880
SN - 2469-9926
VL - 109
JO - Physical Review A
JF - Physical Review A
IS - 5
M1 - 052440
ER -