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SUMMARY:Richard R. Allen (MIT)
DTSTART:20250325T150000Z
DTEND:20250325T160000Z
DTSTAMP:20260423T035733Z
UID:TalentQ/21
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/TalentQ/21/"
 >Quantum Computing Enhanced Sensing</a>\nby Richard R. Allen (MIT) as part
  of Quantum Spain\n\n\nAbstract\nQuantum computing and quantum sensing rep
 resent two distinct frontiers of quantum information science. In this work
 \, we harness quantum computing to solve a fundamental and practically imp
 ortant sensing problem: the detection of weak oscillating fields with unkn
 own strength and frequency. We present a quantum computing enhanced sensin
 g protocol that outperforms all existing approaches. Furthermore\, we prov
 e our approach is optimal by establishing the Grover-Heisenberg limit — 
 a fundamental lower bound on the minimum sensing time. The key idea is to 
 robustly digitize the continuous\, analog signal into a discrete operation
 \, which is then integrated into a quantum algorithm. Our metrological gai
 n originates from quantum computation\, distinguishing our protocol from c
 onventional sensing approaches. Indeed\, we prove that broad classes of pr
 otocols based on quantum Fisher information\, finite-lifetime quantum memo
 ry\, or classical signal processing are strictly less powerful. Our protoc
 ol is compatible with multiple experimental platforms. We propose and anal
 yze a proof-of-principle experiment using nitrogen-vacancy centers\, where
  meaningful improvements are achievable using current technology. This wor
 k establishes quantum computation as a powerful new resource for advancing
  sensing capabilities.\n
LOCATION:https://researchseminars.org/talk/TalentQ/21/
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