Collective many-body dynamics in a solid-state quantum sensor controlled through nanoscale magnetic gradients

• URL: http://arxiv.org/abs/2506.11920v3
• Date: Wed, 29 Oct 2025 06:38:00 GMT
• Title: Collective many-body dynamics in a solid-state quantum sensor controlled through nanoscale magnetic gradients
• Authors: Piotr Put, Nathaniel T. Leitao, Haoyang Gao, Christina Spaegele, Oksana Makarova, Lillian B. Hughes Wyatt, Andrew C. Maccabe, Matthew Mammen, Bartholomeus Machielse, Hengyun Zhou, Szymon Pustelny, Ania C. Bleszynski Jayich, Federico Capasso, Leigh S. Martin, Hongkun Park, Mikhail D. Lukin,
• Abstract summary: Coherent collective dynamics of strongly interacting qubits are a central resource in quantum information science.<n>We realize collective many-body dynamics by combining time-dependent magnetic field gradients with global coherent control of dense electron spin ensembles in diamond.
• Score: 0.5797786035713876
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Coherent collective dynamics of strongly interacting qubits are a central resource in quantum information science, with applications from quantum computing and simulation to metrology. While electronic spins interact strongly via dipolar couplings in dense solid-state ensembles, imperfections and positional disorder pose major obstacles to coherent correlated behavior, limiting their usefulness. Here, we realize collective many-body dynamics by combining time-dependent magnetic field gradients with global coherent control of dense electron spin ensembles in diamond. We control and probe the dynamics of nanometer-scale spin spirals, and, by exploiting Hamiltonian engineering that enhances the microscopic symmetry of the interactions, we observe a disorder-resilient collective spin evolution. Our results establish a pathway to interaction-enhanced quantum metrology and nanoscale imaging of materials and biological systems under ambient conditions.

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