Operation of a ferromagnetic axion haloscope at 
                
                  
                
                $$m_a=58\,\upmu \mathrm {eV}$$
                
                  
                    
                      
                        m
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                      58
                      
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Crescini, N.; Alesini, D.; Braggio, C.; Carugno, G.; Gioacchino, D. Di; Gallo, C. S.; Gambardella, U.; Gatti, C.; Iannone, G.; Lamanna, G.; Ligi, C.; Lombardi, A.; Ortolan, A.; Pagano, S.; Pengo, R.; Ruoso, G.; Speake, C. C.; Taffarello, L.

doi:10.1140/epjc/s10052-018-6163-8

Cited by 63 publications

(28 citation statements)

References 71 publications

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“…In order to maximise the axion induced signal in a realistic detector, it is important to shift from a single spin system to a system with a very high spin number. This number of spins is maximised in ferromagnetic crystals, particularly Yttrium Iron Garnet (YIG), that have been proposed as the core sensing element in previous proposals 25,26,28 . In addition to this, high quality YIG is characterised by relatively narrow linewidths that makes it a popular choice for research in the field of hybrid quantum system for future quantum information processing [34][35][36][37][38][39] .…”

Section: B Ferromagnetic Haloscopesmentioning

confidence: 99%

“…It should be noted that this experiment being a directional detector of the axion dark matter field makes it also sensitive to the so called 'dark matter hurricane' or S1 stream which provides an additional source of axions as well as different velocity distribution compared with those in the dark matter halo 51 . In this work, however, we only consider the axion wind from the earth's movement through the dark matter halo which gives the following parameters 25 :…”

Section: Axion Windmentioning

confidence: 99%

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Broadening frequency range of a ferromagnetic axion haloscope with strongly coupled cavity–magnon polaritons

Flower

Bourhill

Goryachev

et al. 2019

Physics of the Dark Universe

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With the axion being a prime candidate for dark matter, there has been some recent interest in direct detection through a so called 'Ferromagnetic haloscope.' Such devices exploit the coupling between axions and electrons in the form of collective spin excitations of magnetic materials with the readout through a microwave cavity. Here, we present a new, general, theoretical treatment of such experiments in a Hamiltonian formulation for strongly coupled magnons and photons, which hybridise as cavity-magnon polaritons. Such strongly coupled systems have an extended measurable dispersive regime. Thus, we extend the analysis and operation of such experiments into the dispersive regime, which allows any ferromagnetic haloscope to achieve improved bandwidth with respect to the axion mass parameter space. This experiment was implemented in a cryogenic setup, and initial search results are presented setting laboratory limits on the axion-electron coupling strength of g aee > 3.7 × 10 −9 in the range 33.79 µeV< m a < 33.94 µeV with 95% confidence. The potential bandwidth of the Ferromagnetic haloscope was calculated to be in two bands, the first of about 1 GHz around 8.24 GHz (or 4.1 µeV mass range around 34.1 µeV) and the second of about 1.6 GHz around 10 GHz (6.6 µeV mass range around 41.4 µeV). Frequency tuning may also be easily achieved via an external magnetic field which changes the ferromagnetic resonant frequency with respect to the cavity frequency. The requirements necessary for future improvements to reach the DFSZ axion model band are discussed in the paper.

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Section: B Ferromagnetic Haloscopesmentioning

confidence: 99%

Section: Axion Windmentioning

confidence: 99%

Broadening frequency range of a ferromagnetic axion haloscope with strongly coupled cavity–magnon polaritons

Flower

Bourhill

Goryachev

et al. 2019

Physics of the Dark Universe

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show abstract

“…The most exploited detection principle of axions and ALPs is the haloscope proposed by Sikivie [14,15], whose description is addressed in a review: [16]. Examples of running experiments, also shown by the vertical lines in Figure 1, are ADMX [17,18], HAYSTAC [19], CAPP-8T [20], CAPP-9T [21], ORGAN [22], and QUAX [23][24][25][26]; other proposed experiments include RADES [27,28], MADMAX [29], BRASS [30], and KLASH [31][32][33].…”

Section: Introduction 1detection Of Axionsmentioning

confidence: 99%

Josephson Junctions as Single Microwave Photon Counters: Simulation and Characterization

et al. 2021

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Detection of light dark matter, such as axion-like particles, puts stringent requirements on the efficiency and dark-count rates of microwave-photon detectors. The possibility of operating a current-biased Josephson junction as a single-microwave photon-detector was investigated through numerical simulations, and through an initial characterization of two Al junctions fabricated by shadow mask evaporation, done in a dilution refrigerator by measuring escape currents at different temperatures, from 40 mK up to the Al transition temperature. The escape dynamics of the junctions were reproduced in the simulation, including the dissipative effects. Inhibition of thermal activation was observed, leaving the macroscopic quantum tunneling as the dominant effect well beyond the crossover temperature.

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“…Applications of such systems range from quantum information processing [1][2][3] and coherent conversion of microwave to optical frequency light [4,5], to microwave components in the form of filters, circulators, isolators and oscillators. Additionally, such systems are used in the study of hybrid quantum systems [6,7], Quantum electrodynamics (QED) [8][9][10], and direct detection of dark matter [11][12][13][14][15]. In the context of dark matter detection, it has been shown that strongly coupled cavity-magnon systems are useful for expanding the range of detectable dark matter masses [11].…”

Section: Introductionmentioning

confidence: 99%

Experimental implementations of cavity-magnon systems: from ultra strong coupling to applications in precision measurement

et al. 2019

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Several experimental implementations of cavity-magnon systems are presented. First an Yttrium Iron Garnet (YIG) block is placed inside a re-entrant cavity where the resulting hybrid mode is measured to be in the ultra strong coupling (USC) regime. When fully hybridised the ratio between the coupling rate and uncoupled mode frequencies is determined to be g/ω=0.46. Next a thin YIG cylinder is placed inside a loop gap cavity. The bright mode of this cavity couples to the YIG sample and is similarly measured to be in the USC regime with ratio of coupling rate to uncoupled mode frequencies as g/ω=0.34. A larger spin density medium such as lithium ferrite (LiFe) is expected to improve couplings by a factor of 1.46 in both systems as coupling strength is shown to be proportional to the square root of spin density and magnetic moment. Such strongly coupled systems are potentially useful for cavity QED, hybrid quantum systems and precision dark matter detection experiments. The YIG disc in the loop gap cavity, is, in particular, shown to be a strong candidate for dark matter detection. Finally, a LiFe sphere inside a two post re-entrant cavity is considered. In past work it was shown that the magnon mode in the sample has a turnover point in frequency (Goryachev et al 2018 Phys. Rev. B 97 155129). Additionally, it was predicted that if the system was engineered such that it fully hybridised at this turnover point the cavity-magnon polariton transition frequency would become insensitive to both first and second order magnetic bias field fluctuations, a result useful for precision frequency applications. This work implements such a system by engineering the cavity mode frequency to near this turnover point, with suppression in sensitivity to second order bias magnetic field fluctuations shown.

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Operation of a ferromagnetic axion haloscope at $$m_a=58\,\upmu \mathrm {eV}$$ m a = 58 μ eV

Cited by 63 publications

References 71 publications

Broadening frequency range of a ferromagnetic axion haloscope with strongly coupled cavity–magnon polaritons

Broadening frequency range of a ferromagnetic axion haloscope with strongly coupled cavity–magnon polaritons

Josephson Junctions as Single Microwave Photon Counters: Simulation and Characterization

Experimental implementations of cavity-magnon systems: from ultra strong coupling to applications in precision measurement

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