KIAS HEP-PH Journal Club meeting

Friday 17 Oct 2025, 11:00 → 13:00 Asia/Seoul

=============== journal club meeting ===============

Time: Friday 11:00-12:00 (KST)

Place: Room 1423

 

- Talk Information

 

Talk1

 

Speaker: Dr. Bin Xu ( Welcome Talk)

Title: Quantum Enhanced Sensing of Ultra-Light Dark Matters

References: 

Abstract: 

The nature of dark matter (DM) remains one of the most pressing open questions in fundamental physics. Among the viable candidates, ultra-light bosonic dark matter such as axions and dark photons can manifest as coherent, wave-like fields that naturally couple to photons. In this talk, I present quantum-enhanced approaches to detect such signals by exploiting tools from quantum information science. We show how single-photon counters and non-classical states, such as Schrödinger cat states, can surpass the standard quantum limit and significantly improve scan rates. Furthermore, by harnessing quantum coherence across entangled sensor networks, incoherent backgrounds can be eliminated, leading to a quadratic signal enhancement scaling as N^2. Finally, I discuss a quantum metrological framework in which Dicke states saturate the Heisenberg limit for dark matter sensing. These developments highlight the synergy between quantum technologies and fundamental physics, and point toward new opportunities for probing the quantum nature of dark matter.

 

===========lunch polling===============

Lunch menu will be TBA.

Please participate in the polling for the options below before 18:00 this Thursday.

By the rule change, lunch will be canceled if there are no external participants.

Menu and vote: TBA

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KIAS official Youtube channel:
https://www.youtube.com/channel/UCDHm-rkJk6lEApBOkj9q-ZQ

KIAS HEP-ph Youtube channel:
https://www.youtube.com/channel/UCVXTeRaZ8oFPEN40IMvgeww

You can find KIAS HEP-ph calendar:
https://indico.kias.re.kr/category/0/calendar