Steven Anlage

About

Professor Steven Anlage, Ph.D., from the California Institute of Technology in 1988, is an experimental physicist specializing in the fundamental physics and applications of superconductivity. His research involves investigating the electrodynamic response of superconductors, particularly high-temperature superconductors such as copper-oxide materials, through measurements of microwave surface impedance and fluctuation conductivity. His work aims to elucidate the electron pairing mechanism, measure the intrinsic nonlinear response in the Meissner state, and understand the superconductor/normal phase transition in high-Tc materials. His research encompasses the development and application of near-field microwave microscopes for dielectric and metal measurements at nanometer resolution, as well as the study of quantum chaos through electromagnetic analog experiments. He has contributed to understanding the nonlinear properties of superconductors, the phase transition behavior at finite frequencies, and the development of advanced measurement techniques including scanning laser microscopy of RF current flow. Additionally, Professor Anlage has explored chaos in nonlinear circuits at RF and microwave frequencies, the properties of left-handed metamaterials, and has collaborated with industry to develop commercial near-field microwave microscopes. His work has also extended to innovative wireless power transfer methods and electromagnetic environment resilience, with recognition…

Research topics

• Optics
• Computer Science
• Physics
• Mathematics
• Telecommunications
• Particle physics
• Statistics
• Electrical engineering
• Nuclear physics
• Engineering

Selected publications

• Searching for dark matter with plasma haloscopes

  Physical review. D/Physical review. D. · 2023 · 70 citations

  We summarize the recent progress of the Axion Longitudinal Plasma Haloscope (ALPHA) Consortium, a new experimental collaboration to build a plasma haloscope to search for axions and dark photons. The plasma haloscope is a novel method for the detection of the resonant conversion of light dark matter to photons. ALPHA will be sensitive to QCD axions over almost a decade of parameter space, potentially discovering dark matter and resolving the strong $CP$ problem. Unlike traditional cavity halosco…

  PublisherOA PDFDOI

• Perfect absorption in complex scattering systems with or without hidden symmetries

  Nature Communications · 2020 · 53 citations

  Senior authorCorresponding
  DOI

• Topology and manipulation of scattering singularities in complex non-Hermitian systems: Two-channel case

  Physical Review Research · 2025-04-25 · 11 citations

  articleOpen accessSenior author

  The control of wave scattering in complex non-Hermitian settings is an exciting subject—often challenging the creativity of researchers and stimulating the imagination of the public. Successful outcomes include invisibility cloaks, wavefront shaping protocols, active metasurface development, and more. At their core, these achievements rely on our ability to engineer the resonant spectrum of the underlying physical structures, which is conventionally accomplished by carefully imposing geometrical…

  PublisherOA PDFDOI

• Physical Interpretation of Imaginary Time Delay

  Physical Review Letters · 2025-06-03 · 9 citations

  articleOpen accessSenior author

  The scattering matrix S linearly relates the vector of incoming waves to outgoing wave excitations, and contains an enormous amount of information about the scattering system and its connections to the scattering channels. Time delay is one way to extract information from S, and the transmission time delay τ_{T} is a complex (even for Hermitian systems with unitary scattering matrices) measure of how long a wave excitation lingers before being transmitted. The real part of τ_{T} is a well-studie…

  PublisherDOI

• Microscopic examination of rf-cavity-quality niobium films through local nonlinear microwave response

  Physical Review Applied · 2024-11-05 · 9 citations

  articleOpen accessSenior author

  The performance of superconducting radio-frequency (SRF) cavities is sometimes limited by local defects. To investigate the rf properties of these local defects, especially those that nucleate rf magnetic vortices, a near-field magnetic microwave microscope is employed. Local third-harmonic response (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><a:msub><a:mi>P</a:mi><a:mrow><a:mn>3</a:mn><a:mi mathvariant="normal">f</a:mi></a:mrow></a:msub></a:math>) an…

  PublisherDOI

Recent grants

• Superconducting Metamaterials

  NSF · $270k · 2003–2007

• A Novel Gap Spectroscopy Tool and Discovery of New Nodal Superconductors

  NSF · $359k · 2014–2018

• RINGS: Harnessing the Complexity of Modern Electromagnetic Environments for Resilient Wireless Communications

  NSF · $1.0M · 2022–2026

Frequent coauthors

• Nicola Pompeo

  Roma Tre University

  961 shared

• Thomas Siegert

  University of West Florida

  961 shared

• F Gömöry

  961 shared

• Sergio Benedetto

  Xi'an Jiaotong University

  961 shared

• Gregory W. Lyons

  DEVCOM Army Research Laboratory

  961 shared

• Naoyuki Amemiya

  Kyoto University

  961 shared

• T. Kiss

  961 shared

• Susana Izquierdo Bermúdez

  European Organization for Nuclear Research

  961 shared

Awards & honors

• Glenn L. Martin Medal
• Greenaugh Award
• Innovation Hall of Fame
• 125th Anniversary Medal
• Early Career Distinguished Alumni Society

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