| 研究実績の概要 |
Although there are observations that indirectly suggest the existence of dark matter (DM), there are no direct observations of DM, and its particle-physics properties are still unknown. I research on using a solid-state physics system as a quantum sensor to probe dark matter (DM) signals directly. I published 3 papers [1,2,3] about DM detection using magnets and qubits, and gave seminars and talks at several institutions and conferences in Japan (KEK, UOsaka), Taiwan (Summer Institute 2023), Thailand (Chulalongkorn University HEP group), and the United States (Aspen Winter Conference by Aspen Center for Physics).
Refs: [1] Phys.Rev.D 108 (2023), no.9, 095007, [2] Phys.Rev.Lett. 131 (2023), no.21, 211001, [3] arXiv: 2311.10413 [hep-ph]
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
I have researched satisfying the two directions planned regarding dark matter (DM) direct detection:
(1) Using nuclear spins to detect light/ultra-light DM (axion, hidden photon): I researched and published the theoretical framework and experimental design for DM detection using a magnet with strong hyperfine interaction as a sensor.
(2) Application of qubit to improve sensitivity of DM search: I also researched and published the proposal for the DM detection by observing the direct excitation of qubits. In particular, we propose observing the direct excitation of transmon from the effect of dark photons. Additionally, we propose using quantum circuits of quantum sensors to enhance the DM signal rate by coherently accumulating the information of DM before the qubit's state measurement.
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| 今後の研究の推進方策 |
I am expanding the research on the possibility of using the ``shift current” phenomena in multi-ferroic condensed material as a dark photon sensor since it has extremely low noise compared to the usual optical receptors. I am also researching the analysis and measurement protocol for using entangled qubits to enhance the DM signal further including the effect of quantum error corrections and quantum entanglement.
I also aim to widen the study to other types of excitation in condensed matter, and to particles other than dark matter, e.g., graviton. The discussion of the possibilities to experimentally distinguish dark matter of different types is also on the plan.
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