Quantum-Enhanced Metrology for Molecular Symmetry Violation using Decoherence-Free Subspaces

• URL: http://arxiv.org/abs/2307.05858v1
• Date: Wed, 12 Jul 2023 00:42:34 GMT
• Title: Quantum-Enhanced Metrology for Molecular Symmetry Violation using Decoherence-Free Subspaces
• Authors: Chi Zhang, Phelan Yu, Arian Jadbabaie and Nicholas R. Hutzler
• Abstract summary: We propose a method to measure time-reversal symmetry violation in molecules that overcomes the standard quantum limit. The protocol does not require an external electric field, and the entangled states have no first-order sensitivity to static electromagnetic fields.
• Score: 5.5922849070931795
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose a method to measure time-reversal symmetry violation in molecules that overcomes the standard quantum limit while leveraging decoherence-free subspaces to mitigate sensitivity to classical noise. The protocol does not require an external electric field, and the entangled states have no first-order sensitivity to static electromagnetic fields as they involve superpositions with zero average lab-frame projection of spins and dipoles. This protocol can be applied with trapped neutral or ionic species, and can be implemented using methods which have been demonstrated experimentally.

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