Quantum sensing with discrete time crystals in the Lipkin-Meshkov-Glick Model

• URL: http://arxiv.org/abs/2510.02825v1
• Date: Fri, 03 Oct 2025 09:04:28 GMT
• Title: Quantum sensing with discrete time crystals in the Lipkin-Meshkov-Glick Model
• Authors: Rahul Ghosh, Bandita Das, Victor Mukherjee,
• Abstract summary: We show that discrete time crystal (DTC) phase transition can enable us to achieve quantum-enhanced high-precision sensing of field strength.<n>Our studies provide a comprehensive understanding of how quantum criticality in DTCs involving long-range interactions can be harnessed for advanced quantum sensing applications.
• Score: 1.0681271119799003
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum phase transitions have been shown to be highly beneficial for quantum sensing, owing to diverging quantum Fisher information close to criticality. In this work we consider a periodically modulated Lipkin-Meshkov-Glick model to show that discrete time crystal (DTC) phase transition in this setup can enable us to achieve quantum-enhanced high-precision sensing of field strength. We employ a detailed finite-size scaling analysis and a time-averaged Inverse Participation Ratio analysis to determine the critical properties of this second-order phase transition. Our studies provide a comprehensive understanding of how quantum criticality in DTCs involving long-range interactions can be harnessed for advanced quantum sensing applications.

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