RT Journal Article
T1 Two-qubit quantum gates with minimal pulse sequences
A1 Sola Reija, Ignacio
A1 Shin, Seokmin
A1 Chang, Bo Y.
AB Working with trapped atoms at a close distance to each other, we show that one can implement entangling gates based on nonindependent qubits using a single pulse per qubit, or a single structured pulse. The optimal parameters depend on approximate solutions of Diophantine equations, causing the fidelity to never be exactly one, even under ideal conditions, although the errors can be made arbitrarily smaller at the cost of stronger fields. We fully characterize the mechanism by which the gates operate and study the effects of thermal motion and intensity fluctuations in the laser beams for different physical implementations of the gates. If instead of one pulse, we control the system with a two-pulse sequence, a plethora of mechanisms become possible where one can choose the optimal parameters from a wide range of values to achieve high-fidelity gates that are more protected from the effects of laser intensity fluctuations.
PB American Physical Society
YR 2024
FD 2024-04-19
LK https://hdl.handle.net/20.500.14352/115318
UL https://hdl.handle.net/20.500.14352/115318
LA eng
NO Quantum Computing Technology Development Program
NO Ministerio de Ciencia e Innovación
NO Unión Europea
DS Docta Complutense
RD 6 abr 2025