Quantum Enhanced Probes of Magnetic Circular Dichroism

Chengyun Hua; Claire E. Marvinney; Seongjin Hong; Matthew Feldman; Yun Yi Pai; Michael Chilcote; Joshua Rabinowitz; Raphael C. Pooser; Alberto M. Marino; Benjamin J. Lawrie

doi:10.1002/qute.202300126

Quantum Enhanced Probes of Magnetic Circular Dichroism

Chengyun Hua, Claire E. Marvinney, Seongjin Hong, Matthew Feldman, Yun Yi Pai, Michael Chilcote, Joshua Rabinowitz, Raphael C. Pooser, Alberto M. Marino, Benjamin J. Lawrie

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Magneto-optical microscopies, including optical measurements of magnetic circular dichroism, are increasingly ubiquitous tools for probing spin-orbit coupling, charge-carrier g-factors, and chiral excitations in matter, but the minimum detectable signal in classical magnetic circular dichroism measurements is fundamentally limited by the shot-noise limit of the optical readout field. Here, a two-mode squeezed light source is used to improve the minimum detectable signal in magnetic circular dichroism measurements by 3 decibels compared with state-of-the-art classical measurements, even with relatively lossy samples like terbium gallium garnet. These results provide a framework for new quantum-enhanced magneto-optical microscopies that are particularly critical for environmentally sensitive materials and for low temperature measurements where increased optical power can introduce unacceptable thermal perturbations.

Original language	English
Journal	Advanced Quantum Technologies
DOIs	https://doi.org/10.1002/qute.202300126
State	Accepted/In press - 2023

Funding

This research was supported by the U. S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. The squeezed light source was developed and optimized with support from the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers, Quantum Science Center. This manuscript was authored by UT‐Battelle, LLC, under contract DE‐AC05‐00OR22725 with the US Department of Energy (DOE). The US government retained and the publisher, by accepting the article for publication, acknowledged that the US government retained a nonexclusive, paid‐up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe‐public‐access‐plan).

Funders	Funder number
National Quantum Information Science Research Centers
Quantum Science Center	DE‐AC05‐00OR22725
U.S. Department of Energy
Office of Science
Basic Energy Sciences
Division of Materials Sciences and Engineering

Keywords

magnetic circular dichroism
quantum noise reduction
quantum optics
quantum sensing
squeezed light

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10.1002/qute.202300126

Cite this

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title = "Quantum Enhanced Probes of Magnetic Circular Dichroism",

abstract = "Magneto-optical microscopies, including optical measurements of magnetic circular dichroism, are increasingly ubiquitous tools for probing spin-orbit coupling, charge-carrier g-factors, and chiral excitations in matter, but the minimum detectable signal in classical magnetic circular dichroism measurements is fundamentally limited by the shot-noise limit of the optical readout field. Here, a two-mode squeezed light source is used to improve the minimum detectable signal in magnetic circular dichroism measurements by 3 decibels compared with state-of-the-art classical measurements, even with relatively lossy samples like terbium gallium garnet. These results provide a framework for new quantum-enhanced magneto-optical microscopies that are particularly critical for environmentally sensitive materials and for low temperature measurements where increased optical power can introduce unacceptable thermal perturbations.",

keywords = "magnetic circular dichroism, quantum noise reduction, quantum optics, quantum sensing, squeezed light",

author = "Chengyun Hua and Marvinney, {Claire E.} and Seongjin Hong and Matthew Feldman and Pai, {Yun Yi} and Michael Chilcote and Joshua Rabinowitz and Pooser, {Raphael C.} and Marino, {Alberto M.} and Lawrie, {Benjamin J.}",

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year = "2023",

doi = "10.1002/qute.202300126",

language = "English",

journal = "Advanced Quantum Technologies",

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T1 - Quantum Enhanced Probes of Magnetic Circular Dichroism

AU - Hua, Chengyun

AU - Marvinney, Claire E.

AU - Hong, Seongjin

AU - Feldman, Matthew

AU - Pai, Yun Yi

AU - Chilcote, Michael

AU - Rabinowitz, Joshua

AU - Pooser, Raphael C.

AU - Marino, Alberto M.

AU - Lawrie, Benjamin J.

PY - 2023

Y1 - 2023

N2 - Magneto-optical microscopies, including optical measurements of magnetic circular dichroism, are increasingly ubiquitous tools for probing spin-orbit coupling, charge-carrier g-factors, and chiral excitations in matter, but the minimum detectable signal in classical magnetic circular dichroism measurements is fundamentally limited by the shot-noise limit of the optical readout field. Here, a two-mode squeezed light source is used to improve the minimum detectable signal in magnetic circular dichroism measurements by 3 decibels compared with state-of-the-art classical measurements, even with relatively lossy samples like terbium gallium garnet. These results provide a framework for new quantum-enhanced magneto-optical microscopies that are particularly critical for environmentally sensitive materials and for low temperature measurements where increased optical power can introduce unacceptable thermal perturbations.

AB - Magneto-optical microscopies, including optical measurements of magnetic circular dichroism, are increasingly ubiquitous tools for probing spin-orbit coupling, charge-carrier g-factors, and chiral excitations in matter, but the minimum detectable signal in classical magnetic circular dichroism measurements is fundamentally limited by the shot-noise limit of the optical readout field. Here, a two-mode squeezed light source is used to improve the minimum detectable signal in magnetic circular dichroism measurements by 3 decibels compared with state-of-the-art classical measurements, even with relatively lossy samples like terbium gallium garnet. These results provide a framework for new quantum-enhanced magneto-optical microscopies that are particularly critical for environmentally sensitive materials and for low temperature measurements where increased optical power can introduce unacceptable thermal perturbations.

KW - magnetic circular dichroism

KW - quantum noise reduction

KW - quantum optics

KW - quantum sensing

KW - squeezed light

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JO - Advanced Quantum Technologies

JF - Advanced Quantum Technologies

ER -

Quantum Enhanced Probes of Magnetic Circular Dichroism

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Keywords

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