Light detection nears its quantum limit.
Sign Up to like & getrecommendations! Published in 2021 at "Nature"
DOI: 10.1038/d41586-021-02489-4
Abstract: forest fires. Their results nevertheless highlight the key role of policy and enforcement in helping to preserve biodiversity in the Amazon. Feng et al. clearly show that forest-policy regulations can be beneficial in conserving the… read more here.
Keywords: forest fires; policy; quantum limit; nears quantum ... See more keywords
Observation of a thermoelectric Hall plateau in the extreme quantum limit
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DOI: 10.1038/s41467-020-14819-7
Abstract: The thermoelectric Hall effect is the generation of a transverse heat current upon applying an electric field in the presence of a magnetic field. Here, we demonstrate that the thermoelectric Hall conductivity α x y… read more here.
Keywords: thermoelectric hall; plateau; field; quantum limit ... See more keywords
Beating standard quantum limit via two-axis magnetic susceptibility measurement
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DOI: 10.1088/1674-1056/ac4229
Abstract: We report a metrology scheme which measures magnetic susceptibility of an atomic spin ensemble along the x and z direction and produces parameter estimation with precision beating the standard quantum limit. The atomic ensemble is… read more here.
Keywords: standard quantum; measurement; susceptibility; beating standard ... See more keywords
Microwave Measurement beyond the Quantum Limit with a Nonreciprocal Amplifier
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DOI: 10.1103/physrevapplied.13.044005
Abstract: The measurement of a quantum system is often performed by encoding its state in a single observable of a light field. The measurement efficiency of this observable can be reduced by loss or excess noise… read more here.
Keywords: amplifier; efficiency; quantum limit; measurement efficiency ... See more keywords
Quantum oscillation beyond the quantum limit in pseudospin Dirac materials
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DOI: 10.1103/physrevb.102.041204
Abstract: Recently, many unexpected fine structures in electric, magnetic, and thermoelectric responses at extremely magnetic fields in topological materials have attracted tremendous interest. We propose a mechanism of quantum oscillation beyond the strong-field quantum limit for… read more here.
Keywords: quantum oscillation; oscillation; dirac; oscillation beyond ... See more keywords
Quantized thermoelectric Hall plateau in the quantum limit of graphite as a nodal-line semimetal
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.107.195106
Abstract: We performed thermoelectric Hall conductivity $\alpha_{xy}$ measurements on single-crystal graphite in the quantum limit up to 13 T. Both electrical and thermoelectric transport measurements were performed on the same crystal to extract pure $\alpha_{xy}$, avoiding… read more here.
Keywords: quantum limit; plateau quantum; quantized thermoelectric; thermoelectric hall ... See more keywords