Reversing adiabatic state preparation in few-level quantum systems

Year: 2025

Authors: Romanato L., Eshaqi-Sani N., Lepori L., Kirova T., Arimondo E., Wimberger S.

Autors Affiliation: Univ Parma, Dept Math Phys & Comp Sci, Parco Area Sci 7-A, I-43124 Parma, Italy; Inst Fis Nucl, Sez Milano Bicocca, Grp Collegato Parma, Parco Area Sci 7-A, I-43124 Parma, Italy; Univ Latvia, Inst Atom Phys & Spect, Fac Sci & Technol, Jelgavas St 3, LV-1004 Riga, Latvia; Univ Pisa, Dipartimento Fis, Largo Pontecorvo 3, I-56127 Pisa, Italy; Univ Pisa, Ist Nazl Ott, CNR, Largo Pontecorvo 3, I-56127 Pisa, Italy.

Abstract: We present a detailed study of an adiabatic state preparation in an effective three-level quantum system. States can be prepared with high speed and fidelity by adding a counterdiabatic quantum control protocol. As a second step, we invert the preparation protocol to get back to the initial state. This describes an overall cyclic evolution in state space. Using counterdiabatic terms, the resulting composed fast evolution can be repeated many times. We then analyze the control of Berry’s phase along the adiabatic cyclic path and show that Berry’s phase can act as a sensitive detector of nonperfect state transfer.

Journal/Review: PHYSICAL REVIEW A

Volume: 112 (5)      Pages from: 52812-1  to: 52812-9

More Information: We thank Michele Delvecchio, Michele Burrello and Simon Dengis for useful discussions and comments. L.L. thanks Stefano Carretta and Paolo Santini for sup-port. E.A., T.K., and S.W. acknowledge funding from Q -DYNAMO (EU HORIZON-MSCA-2022-SE-01) with Project No. 101131418, and L.L. and S.W. from the National Recovery and Resilience Plan through Mission 4 Compo-nent 2 Investment 1.3, Call for tender No. 341 of 15/3/2022 of Italian MUR funded by NextGenerationEU, with Project No. PE0000023, Concession Decree No. 1564 of 11/10/2022 adopted by MUR, CUP D93C22000940001, Project title Na-tional Quantum Science and Technology Institute (NQSTI) .
KeyWords: Phase; Spin
DOI: 10.1103/pst6-r584

Citations: 1
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