AQP Seminar: DarQ experiment - Wave-like dark matter searches using superconducting qubits
Host: Prof. Sorin Paraoanu
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DarQ experiment - Wave-like dark matter searches using superconducting qubits
Shion Chen (Kyoto University)
Abstract
Wave-like dark matter - dark photon and the QCD axion - with a mass in the µeV-meV range is well motivated by the relic constraint and naturalness considerations. While the haloscope experiments using cavity resonances have achieved a milestone sensitivity reaching the DFSZ limit in the axion search, they suffer from the standard quantum limit (SQL) as well as narrow frequency tuning ranges, preventing a high sensitivity search over the entire mass range. Superconducting qubit technology has a great potential to avert both bottlenecks, owing to the photon counting capability and the frequency tunability exceeding an order of magnitude variation. DarQ collaboration (Dark matter search using Qubits) has been formed to establish and conduct a set of novel search strategies utilizing qubits as either sensors directly excited by the dark matter [1-3], or as frequency tuners to improve the cavity haloscope experiments [4]. In this presentation, we discuss the very first search results, and the prospect including the new techniques to be enabled in the fault-tolerant quantum computing machines.
[1] T. Moroi et al. PRL 131 (21), 211001 (2023).
[2] T. Sichanugrist et al. PRL 133 (2), 021801 (2024).
[3] T. Sichanugrist et al. PRD 110 (11), 115021 (2024)
[4] F. Zhao et al. arxiv: 2501.06882; K. Nakazono, "Search for dark photons around 34.4 μeV using direct excitations of superconducting qubits", Patras 2024.