Atomic interactions for qubit-error compensation

Year: 2022

Authors: Delvecchio M., Petiziol F., Arimondo E., Wimberger S.

Autors Affiliation: Univ Parma, Dept Math Phys & Comp Sci, Parco Area Sci 7-A, I-43124 Parma, Italy; Natl Inst Nucl Phys, Milano Bicocca Sect, Parma Grp, Parco Area Sci 7-A, I-43124 Parma, Italy; Tech Univ Berlin, Inst Theoret Phys, Hardenbergstr 36, D-10623 Berlin, Germany; Univ Pisa, Dipartimento Fis Enrico Fermi, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy; Ist Nazl Ottica, Consiglio Nazl Ric, Via Giuseppe Moruzzi 1, I-56124 Pisa, Italy.

Abstract: Experimental imperfections induce phase and population errors in quantum systems. We present a method to compensate unitary errors affecting also the population of the qubit states. This is achieved through the interaction of the target qubit with an additional control qubit. We show that our approach works well for single-photon and two-photon excitation schemes. In the first case, we study two reduced models: (i) a two-level system in which the interaction corresponds to an effective level shift and (ii) a three-level one describing two qubits in the Bell triplet subspace. In the second case, a double Stimulated Raman Adiabatic Passage process is presented with comparable compensation efficiency with respect to the single-photon case.

Journal/Review: PHYSICAL REVIEW A

Volume: 105 (4)      Pages from: 42431-1  to: 42431-11

More Information: One of the authors (E.A.) thanks G. La Rocca and D. Rossini for inspiring discussions. Special thanks goes to G. Falci for a critical reading of the manuscript. This research was partially funded by the Deutsche Forschungsgemeinschaft (German Research Foundation) through the SFB 910, Project No. 163436311.
KeyWords: Raman Adiabatic Passage; Quantum; Optics
DOI: 10.1103/PhysRevA.105.042431

ImpactFactor: 2.900
Citations: 1
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