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SUMMARY:Quantum-enhanced dark matter searches using cat states
DTSTART;VALUE=DATE-TIME:20260811T014500Z
DTEND;VALUE=DATE-TIME:20260811T021000Z
DTSTAMP;VALUE=DATE-TIME:20260824T134756Z
UID:indico-contribution-2709@indico.itp.ac.cn
DESCRIPTION:Speakers: Pan Zheng (Shenzhen International Quantum Academy)\n
 Dark photon is one of the potential dark matter candidates with compelling
  cosmological origins and favorable extensions of fundamental physics beyo
 nd the Standard Model. Haloscope experiments are underway to detect the bo
 sonic candidate by exploiting its weak couplings to the resonating electro
 magnetic fields in microwave cavities. Quantum metrology enables sensitive
  haloscope dark matter searches\, particularly using nonclassical electrom
 agnetic states\, such as cat states featuring sub-Planck interference stru
 ctures in phase space. Here\, we present the first experimental applicatio
 n of four-component cat states within a high-quality superconducting micro
 wave cavity to detect dark photons. We demonstrate an 8.1-fold enhancement
  in the signal photon rate and constrain the dark photon kinetic mixing an
 gle to an unprecedented ϵ\n\nhttps://indico.itp.ac.cn/event/416/contribut
 ions/2709/
LOCATION:Conference Center (2F) Back Area
URL:https://indico.itp.ac.cn/event/416/contributions/2709/
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