Precision Measurement of the Optical Conductivity of Atomically Thin Crystals via Photonic Spin Hall Effect

Abstract

How to measure the optical conductivity of atomically thin crystals is an important but challenging issue due to the weak light-matter interaction at the atomic scale. Photonic spin Hall effect, as a fundamental physical effect in light-matter interaction, is extremely sensitive to the optical conductivity of atomically thin crystals. Here, we report a precision measurement of the optical conductivity of graphene, where the photonic spin Hall effect acts as a measurement pointer. By incorporating with the weak-value amplification technique, the optical conductivity of monolayer graphene taken as a universal constant of $(0.993\pm 0.005){\sigma }_0$ is detected, and a high measuring resolution with $1.5\times 10^{-8}{\Omega }^{-1}$ is obtained. For few-layer graphene without twist, we find that the conductivities increase linearly with layer number. Our idea could provide an important measurement technique for probing other parameters of atomically thin crystals, such as magneto-optical constant, circular dichroism, and optical nonlinear coefficient.

arXiv comment5 pages, 5 figures

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Cited by in corpus (11)

• Photonic spin Hall effect in Haldane model materials
• Polarization manipulation of giant photonic spin Hall effect using wave-guiding effect
• Spin/momentum properties of the paraxial optical beams
• High-precision measurement of the complex magneto-optical Kerr effect using weak measurement
• Enhancing interferometry using weak value amplification with real weak values
• Coherent control of photonic spin Hall effect in a Cavity
• High-Sensitivity Characterization of Ultra-Thin Atomic Layers using Spin-Hall Effect of Light
• Enhanced spin hall effect of reflected light due to Optical Tamm states with Dirac semimetal at the terahertz range
• Mitigating Source and Detection Noises in Auto-correlative Weak-Value Amplification
• Nonlocal Nonlinear Control of Photonic Spin Hall Effect in Strongly Interacting Rydberg Media
• Microwave Controlled Photonic Spin Hall Effect in Atomic System and Microwave Electrometry