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20 August 2020 Extracting the quantum metric tensor through periodic driving
Tomoki Ozawa, Nathan Goldman
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Proceedings Volume 11461, Active Photonic Platforms XII; 1146110 (2020) https://doi.org/10.1117/12.2567905
Event: SPIE Nanoscience + Engineering, 2020, Online Only
Abstract
A quantum state, such as a qubit state, defined in a parameter space is endowed with a property called the geometrical property. The geometrical property tells how much the quantum state changes in a parameter space; this property is a gauge invariant, physical, quantity, but it has not been experimentally observed until very recently. We give a simple experimental protocol to measure the geometrical property by periodically modulating the system and looking at the system response. The method can be easily applied to various qubit systems such as diamond NV centers and superconducting qubits. We will also review the current experimental situations regarding the measurement of geometrical structures.
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Tomoki Ozawa and Nathan Goldman "Extracting the quantum metric tensor through periodic driving", Proc. SPIE 11461, Active Photonic Platforms XII, 1146110 (20 August 2020); https://doi.org/10.1117/12.2567905
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KEYWORDS
Quantum communications
Diamond
Modulation
Superconductors
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