Quantum control of Hubbard excitons

Baykusheva, Denitsa R.; Carmichael, Deven; Weber, Clara S.; Lu, I-Te; Glerean, Filippo; Meng, Tepie; De Oliveira, Pedro B. M.; Homes, Christopher C.; Zaliznyak, Igor A.; Gu, G. D.; Dean, Mark P. M.; Rubio, Angel; Kennes, Dante M.; Claassen, Martin; Mitrano, Matteo

doi:10.1038/s41563-026-02517-6

Quantum control of Hubbard excitons

Journal Article · Mon Mar 09 00:00:00 EDT 2026 · Nature Materials

DOI:https://doi.org/10.1038/s41563-026-02517-6· OSTI ID:2876538

^[1]; Carmichael, Deven ^[2]; Weber, Clara S. ^[3]; Lu, I-Te ^[4]; ^[5]; ^[5]; De Oliveira, Pedro B. M. ^[5]; ^[6]; ^[6]; Gu, G. D. ^[6]; ^[6]; ^[7]; Kennes, Dante M. ^[8]; ^[2]; ^[5]

Harvard Univ., Cambridge, MA (United States); Institute of Science and Technology Austria (Austria)
Univ. of Pennsylvania, Philadelphia, PA (United States)
RWTH Aachen Univ. (Germany)
Max Planck Institute for the Structure and Dynamics of Matter, Hamburg (Germany)
Harvard Univ., Cambridge, MA (United States)
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Max Planck Institute for the Structure and Dynamics of Matter, Hamburg (Germany); Flatiron Institute, New York, NY (United States)
RWTH Aachen Univ. (Germany); Max Planck Institute for the Structure and Dynamics of Matter, Hamburg (Germany)

Quantum control of the many-body wavefunction is a central challenge in quantum materials research, as it could yield a precise control knob to manipulate emergent phenomena. Floquet engineering, the coherent dressing of quantum states with periodic non-resonant optical fields, has become an important strategy for quantum control. Most applications to solid-state systems have targeted weakly interacting or single-ion states, leaving the manipulation of many-body wavefunctions largely unexplored. Here, we use Floquet engineering to achieve quantum control of a strongly correlated Hubbard exciton in the one-dimensional Mott insulator Sr₂CuO₃. A nonresonant midinfrared optical field coherently dresses the exciton wavefunction, driving its rotation between bright and dark states. We use resonant third-harmonic generation to quantify ultrafast π/2 rotations on the Bloch sphere spanned by these exciton states. Our work advances the quest towards programmable control of correlated states and exciton-based quantum sensing.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Lab; Harvard Univ., Cambridge, MA (United States)

Sponsoring Organization:: Brookhaven National Lab; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)

Grant/Contract Number:: SC0012704; SC0022883; SC0024494

OSTI ID:: 2876538

Alternate ID(s):: OSTI ID: 3027533

Report Number(s):: BNL-229622-2026-JAAM

Journal Information:: Nature Materials, Journal Name: Nature Materials; ISSN 1476-4660; ISSN 1476-1122

Publisher:: Springer NatureCopyright Statement

Country of Publication:: United States

Language:: English

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