Piezoelectric voltage coupled reentrant cavity resonator

Carvalho, Natália C.; Fan, Y.; Floch, Jean-Michel Le; Tobar, Michael E.

doi:10.1063/1.4897482

Cited by 14 publications

(10 citation statements)

References 25 publications

(25 reference statements)

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“…Deformations on cooling to cryogenic temperatures are harder to control, and hence the tuning range is harder to predict and exhibits some scatter. Previous results have shown the dynamic range of a piezoelectric actuator when cooled to cryogenic tem- peratures is reduced by about 82% 13 , in this case the reduction in tuning range compared to the simulated room temperature performance is 66% on average, showing a less significant reduction in sensitivity compared to the previous results.…”

Section: Resultscontrasting

confidence: 49%

“…For this reason, tunable cavities coupled to piezoelectric actuators have been developed for decades 11,12 . More recently, a system was presented that uses the central post of a reentrant cavity as a movable structure and was able to offer fine electronic tuning over a range of up to 139 MHz at cryogenic temperatures, but with low Q-factors 13 .…”

Section: Introductionmentioning

confidence: 99%

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Piezoelectric tunable microwave superconducting cavity

Carvalho

Fan

Tobar

2016

Review of Scientific Instruments

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In the context of engineered quantum systems, there is a demand for superconducting tunable devices, able to operate with high-quality factors at power levels equivalent to only a few photons. In this work, we developed a 3D microwave re-entrant cavity with such characteristics ready to provide a very fine-tuning of a high-Q resonant mode over a large dynamic range. This system has an electronic tuning mechanism based on a mechanically amplified piezoelectric actuator, which controls the resonator dominant mode frequency by changing the cavity narrow gap by very small displacements. Experiments were conducted at room and dilution refrigerator temperatures showing a large dynamic range up to 4 GHz and 1 GHz, respectively, and were compared to a finite element method model simulated data. At elevated microwave power input, nonlinear thermal effects were observed to destroy the superconductivity of the cavity due to the large electric fields generated in the small gap of the re-entrant cavity.

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Section: Resultscontrasting

confidence: 49%

Section: Introductionmentioning

confidence: 99%

Piezoelectric tunable microwave superconducting cavity

Carvalho

Fan

Tobar

2016

Review of Scientific Instruments

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“…Any experiments which introduce dielectric media into the cavity volume will also need to consider the impact of these dielectrics on the electric and magnetic form factors explicitly. Finally, detection of axions via the magnetic coupling has been proposed through the use of LC circuits as the readout mechanism [17] -as we have now defined the complete electromagnetic form factor for cavity-based experiments, we have opened the possibility of low mass, preinflationary [22] axion detection via 3D lumped LC resonators, commonly known as re-entrant cavities [23][24][25][26]. In conclusion, an axion in the presence of a magnetic field will convert into a real photon with electric and magnetic field components.…”

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confidence: 99%

Axion Dark Matter Coupling to Resonant Photons via Magnetic Field

2016

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We show that the magnetic component of the photon field produced by dark matter axions via the two-photon coupling mechanism in a Sikivie Haloscope is an important parameter passed over in previous analysis and experiments. The interaction of the produced photons will be resonantly enhanced as long as they couple to the electric or magnetic mode structure of the Haloscope cavity. For typical Haloscope experiments the electric and magnetic coupling is the same and implicitly assumed in past sensitivity calculations. However, for future planned searches such as those at high frequency, which synchronize multiple cavities, the sensitivity will be altered due to different magnetic and electric couplings. We define the complete electromagnetic form factor and discuss its implications for current and future high and low mass axion searches, including some effects which have been overlooked, due to the assumption that the two couplings are the same.Axions are a type of Weakly Interacting Slim Particle (WISP) originating from the Peccei Quinn solution to the strong CP problem in QCD [1]. They can be formulated as highly motivated and compelling components of Cold Dark Matter (CDM) [2][3][4][5]. Cosmological constraints provide upper and lower limits on the mass of the axion [6], yet still leave a large area of parameter space to be searched. One of the most mature and sensitive experiments is the Sikivie Haloscope [7,8], which exploits the inverse Primakoff effect whereby a magnetic field provides a source of virtual photons in order to induce axion-to-photon conversion via a two photon coupling, with the generated real photon frequency being dictated by the axion mass. This signal is then resonantly enhanced by a cavity structure and resolved above the thermal noise of the measurement system. It has been well established that in a Haloscope with an axial DC magnetic field the expected power due to axion-tophoton conversion is given by [7][8][9] where g γ is a dimensionless model-dependent parameter of O(1) [10][11][12], α the fine structure constant, f a the Peccei-Quinn energy breaking scale which dictates the axion mass and coupling strength, m a the axion mass, ρ a the local density of axions, V the cavity volume, B 0 the applied magnetic field, Q the cavity quality factor (assuming the bandwidth is greater than the expected spread of the axion signal) and C the Haloscope form factor describing the overlap between the electric field created by the converted axions and the electric field structure of the resonant mode in the cavity.To date Haloscope searches have excluded some areas of the parameter space [9,13], with further experiments currently under way and future efforts in various stages of planning [14][15][16]. All of this work fundamentally relies on Eq. (1) to set constraints on f a and hence the mass of the axion and the strength of axion-photon coupling. In deriving Eq. (1) the coupling of an axion to a photon electric field is explicitly considered in the form factor, C, and it is then assumed that the c...

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“…The photon frequency can be modulated by using a tunable 3D microwave cavity as realized in the Refs. [38,39,40,41], which will modulate the cavity detuning, δ a . In the following section we will show that, using these time-dependent modulations, a STIRAPlike protocol can be designed to effectively transfer the microwave cavity state to the mechanical mode and then retrieve it back to the microwave cavity mode.…”

Section: Modelmentioning

confidence: 99%

Cavity magnomechanical storage and retrieval of quantum states

2021

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We show how a quantum state in a microwave cavity mode can be transferred to and stored in a phononic mode via an intermediate magnon mode in a magnomechanical system. For this we consider a ferrimagnetic yttrium iron garnet (YIG) sphere inserted in a microwave cavity, where the microwave and magnon modes are coupled via a magnetic-dipole interaction and the magnon and phonon modes in the YIG sphere are coupled via magnetostrictive forces. By modulating the cavity and magnon detunings and the driving of the magnon mode in time, a Stimulated Raman Adiabatic Passage (STIRAP)-like coherent transfer becomes possible between the cavity mode and the phonon mode. The phononic mode can be used to store the photonic quantum state for long periods as it possesses lower damping than the photonic and magnon modes. Thus our proposed scheme offers a possibility of using magnomechanical systems as quantum memory for photonic quantum information.

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Piezoelectric voltage coupled reentrant cavity resonator

Cited by 14 publications

References 25 publications

Piezoelectric tunable microwave superconducting cavity

Piezoelectric tunable microwave superconducting cavity

Axion Dark Matter Coupling to Resonant Photons via Magnetic Field

Cavity magnomechanical storage and retrieval of quantum states

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