2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/222076We present the design of a quantum carry-lookahead adder using measurement-based quantum computation. QCLA utilizes MBQC`s ability to transfer quantum states in unit time to accelerate addition. The quantum carry-lookahead adder (QCLA) is faster than a quantum ripple-carry adder; QCLA has logarithmic depth while ripple adders have linear depth. QCLA is an order of magnitude faster than a ripple-carry adder when adding registers longer than 100 qubits but requires a cluster state that is an order of magnitude larger. Hand optimization results in a $\approx$ 26% reduction in spatial resources for the circuit.1 pages, 1 figures, International Symposium on Nanoscale Transport and Technology 2009, NTT, Hon Atsugi, JapanQuantum PhysicsGeneral Relativity and Quantum Cosmologytext