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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:3
UID:UW-Physics-Event-9746
DTSTART:20261015T150000Z
DTEND:20261015T160000Z
DTSTAMP:20261008T113745Z
LAST-MODIFIED:20260930T010952Z
LOCATION:5310 Chamberlin Hall
SUMMARY:An interdisciplinary journey from quantum materials to quantum
  sensors\, R. G. Herb Condensed Matter Seminar\, Kin Chung Fong\, Nort
 heastern University
DESCRIPTION:Quantum science and technology offer unprecedented opportu
 nities to deepen our understanding of nature and enable transformative
  technologies. Realizing these opportunities\, however\, requires more
  than advances within a single discipline. New quantum phenomena must 
 be understood at the level of materials\, translated into controllable
  devices\, and ultimately harnessed for increasingly sensitive measure
 ments. This interplay between fundamental physics and device engineeri
 ng can open pathways that are difficult to envision from any single fi
 eld of study.
\n
\nIn this talk\, I will share my journey across quant
 um materials\, quantum devices\, and quantum sensing\, illustrating ho
 w discoveries in one area can create new opportunities in another. We 
 will begin with the unusual properties of Dirac and topological materi
 als and explore how these quantum phenomena manifest in Josephson junc
 tions. We will then turn to how the unique electronic and thermodynami
 c properties of these materials can be harnessed to develop novel sing
 le-photon detectors. Building on these ideas\, we will explore two-dim
 ensional van der Waals materials as platforms for miniaturized quantum
  devices\, including qubits and quantum-noise-limited amplifiers.
\n
\
 nTurning this perspective around\, we will then apply quantum sensors 
 to investigate fundamental physics. We will focus on studying the pair
 ing symmetry of unconventional superconductors\, including magic-angle
  twisted graphene and topological Weyl superconductors\, and explore h
 ow these emerging quantum-sensing technologies could enable new scient
 ific frontiers\, from planetary science to the search for axion dark-m
 atter.
\n
\nTogether\, these examples illustrate how an interdisciplin
 ary approach—connecting materials physics\, quantum devices\, sensin
 g\, and fundamental science—can create new pathways for quantum disc
 overy and technology.
\n
\nReferences:
\n1. B. Huang\, et. al.\, “Th
 ermal detection of single photons using Dirac fermions\,” Nat. Comm.
  17\, 3845 (2026).
\n2. J. Balgley\, et. al.\, "Coherent and compact v
 an der Waals transmon qubits\," arXiv:2512.08059 (2025).
\n3. A. Baner
 jee\, et. al.\, “Superfluid stiffness of twisted multilayer graphene
  superconductors\,” Nature 638\, 93 (2025).
URL:https://www.physics.wisc.edu/events/?id=9746
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