Radio Frequency SQUIDs and their Applications

Chesca, Boris; Zhang, Yi

doi:10.1007/978-94-010-0450-3_19

Cited by 10 publications

(8 citation statements)

References 85 publications

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“…With I > I c (for a particular flux), the RF-SQUID operates in the resistive mode, and I decays exponentially until the JJ recovers its superconducting state. [39] The TC must supply energy to the SQUID, which reduces the voltage across the TC, but does not necessarily change its oscillation frequency. In this mode, if only a small magnetic field is present, I c would not be essentially exceeded.…”

Section: The Rf-squid and Squid-like Behaviormentioning

confidence: 99%

Observation of SQUID‐Like Behavior in Fiber Laser with Intra‐Cavity Epsilon‐Near‐Zero Effect

Liu

Malomed

et al. 2022

Laser & Photonics Reviews

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Establishing relations between fundamental effects in far-flung areas of physics is a subject of great interest in the current research. Realization of a novel photonic system akin to the radio-frequency superconducting quantum interference device (RF-SQUID), in a fiber laser cavity with epsilon-near-zero (ENZ) nanolayers as intra-cavity components is reported here. Emulating the RF-SQUID scheme, the photonic counterpart of the supercurrent, represented by the optical wave, circulates in the cavity, passing through effective optical potential barriers. Different ENZ wavelengths translate into distinct spectral outputs through the variation of cavity resonances, emulating the situation with a frequency-varying tank circuit in the RF-SQUID. Due to the presence of the ENZ element, the optical potential barrier is far lower for selected frequency components, granting them advantage in the gain-resource competition. The findings reported in this work provide a deeper insight into the ultrafast ENZ photonics, revealing a new path toward the design of nanophotonic on-chip devices with various operational functions, and offer a new approach to study superconducting and quantum-mechanical systems.

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Section: The Rf-squid and Squid-like Behaviormentioning

confidence: 99%

Observation of SQUID‐Like Behavior in Fiber Laser with Intra‐Cavity Epsilon‐Near‐Zero Effect

Liu

Malomed

et al. 2022

Laser & Photonics Reviews

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“…Then, the variation of the oscillation frequency in the tank circuit, ∆ω, can be detected by measuring the respective voltage (see Figure 1), and a change in the magnetic field changes the inductance of JJ and leads to a change in the resonant frequency of the TC. With I > I c (for a particular flux), the RF-SQUID operates in the resistive mode, and I decays exponentially until the JJ recovers its superconducting state [39]. The TC must supply energy to the SQUID, which reduces the voltage across the TC, but does not necessarily change its oscillation frequency.…”

Section: The Rf-squid and Squid-like Behaviormentioning

confidence: 99%

“…This value should be found from the minimum condition, dP /dλ = 0. The usual RF-SQUID also works in the regime realizing a minimum of the JJ potential barrier [39].…”

Section: The Phenomenological Picture: Mode Reselection Under the Act...mentioning

confidence: 99%

Observation of SQUID-like behavior in fiber laser with intra-cavity epsilon-near-zero effect

Wu,

Liu,

Malomed

et al. 2022

Preprint

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Establishing relations between fundamental effects in far-flung areas of physics is a subject of great interest in the current research. We here report realization of a novel photonic system akin to the radio-frequency superconducting quantum interference device (RF-SQUID), in a fiber laser cavity with epsilon-near-zero (ENZ) nanolayers as intra-cavity components. Emulating the RF-SQUID scheme, the photonic counterpart of the supercurrent, represented by the optical wave, circulates in the cavity, passing through effective optical potential barriers. Different ENZ wavelengths translate into distinct spectral outputs through the variation of cavity resonances, emulating the situation with a frequencyvarying tank circuit in the RF-SQUID. Due to the presence of the ENZ element, the optical potential barrier is far lower for selected frequency components, granting them advantage in the gain-resource competition. The findings reported in this work provide a deeper insight into the ultrafast ENZ photonics, revealing a new path towards the design of nanophotonic on-chip devices with various operational functions, and offer a new approach to study superconducting and quantummechanical systems.

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“…The original purpose of the rf-SQUID was to measure small magnetic fields and operate as a fluxto-frequency transducer. 78,79 The first proposal to use an array of rf-SQUIDs as a metamaterial was made by Du, Chen, and Li. 80,81 Their calculation assumes that the SQUID has quantized energy levels and considers the interaction of microwaves with the lowest states of the SQUID potential.…”

Section: ( )mentioning

confidence: 99%

Progress in superconducting metamaterials

Jung

Ustinov

Anlage

2014

Supercond. Sci. Technol.

134

127

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We review progress in the development and applications of superconducting metamaterials. The review is organized in terms of several distinct advantages and unique properties brought to the metamaterials field by superconductivity. These include the lowloss nature of the meta-atoms, their compact structure, their extraordinary degree of nonlinearity and tunability, magnetic flux quantization and the Josephson effect, quantum effects in which photons interact with quantized energy levels in the meta-atom, as well as strong diamagnetism.

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Radio Frequency SQUIDs and their Applications

Cited by 10 publications

References 85 publications

Observation of SQUID‐Like Behavior in Fiber Laser with Intra‐Cavity Epsilon‐Near‐Zero Effect

Observation of SQUID‐Like Behavior in Fiber Laser with Intra‐Cavity Epsilon‐Near‐Zero Effect

Observation of SQUID-like behavior in fiber laser with intra-cavity epsilon-near-zero effect

Progress in superconducting metamaterials

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