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quant-ph2025
Quantum adders: on the structural link between the ripple-carry and carry-lookahead techniques
Maxime Remaud
This paper is motivated by two key observations. First, Toffoli ladders can be implemented in three distinct ways: with linear or polylogarithmic depth using no ancilla, or with lo…
quant-ph2025★ 6 cited
Ancilla-free Quantum Adder with Sublinear Depth
Maxime Remaud, Vivien Vandaele
We present the first exact quantum adder with sublinear depth and no ancilla qubits. Our construction is based on classical reversible logic only and employs low-depth implementati…