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2023•Physical Review ResearchOpen access

Measuring the adiabatic non-Hermitian Berry phase in feedback-coupled oscillators

Yaashnaa Singhal, Enrico Martello, Shraddha Agrawal, Tomoki Ozawa, Hannah M. Price, Bryce Gadway

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Abstract

Measurement of the adiabatic non-Hermitian Berry phase in a nonreciprocal mechanical metamaterial is performed. The measured hallmark features of the adiabatic Berry phase include the reversibility of growth and decay as well as a non-Hermitian analog of the Aharonov-Bohm effect.

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Measurement of the adiabatic non-Hermitian Berry phase in a nonreciprocal mechanical metamaterial is performed. The measured hallmark features of the adiabatic Berry phase include the reversibility of growth and decay as well as a non-Hermitian analog of the Aharonov-Bohm effect.

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Available abstract

Measurement of the adiabatic non-Hermitian Berry phase in a nonreciprocal mechanical metamaterial is performed. The measured hallmark features of the adiabatic Berry phase include the reversibility of growth and decay as well as a non-Hermitian analog of the Aharonov-Bohm effect.

Key concepts: Adiabatic process, Geometric phase, Hermitian matrix, Metamaterial, Physics, Phase (matter), Berry, Quantum mechanics

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