Detection of the Rotation of the Earth with a Superfluid Gyrometer

Avenel, O.; Hakonen, Pertti; Varoquaux, E.

doi:10.1103/physrevlett.78.3602

Cited by 84 publications

(31 citation statements)

References 27 publications

(36 reference statements)

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“…Second, for high-resolution superfluid interferometry measurements of the rotation of the Earth, 70,71,80 we have further improved the raw data processing to achieve a more accurate determination of the circulation bias b . In particular, as reported in Ref.…”

Section: The Experimental Resultsmentioning

confidence: 99%

“…To illustrate the various statistical approaches described in the previous section, we treat as an example the high quality data obtained on interferometric measurements of the rotation of the Earth. 70,71,80 We next turn to the reanalysis of the original data of 1992-1993 with the implementation of the direct determination of the slip nucleation rate.…”

Section: The Experimental Resultsmentioning

confidence: 99%

“…69,71 The velocity at which phase slips occur is a stochastic quantity, the value of which differs slightly from one event to the next. The analysis of the raw data outlined above provides sets of values, or slip velocity records, for these events.…”

Section: A the Raw Experimental Datamentioning

confidence: 99%

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Vortex nucleation in phase-slippage experiments in ultrapure superfluid4Hebelow 0.5 K

Varoquaux

Avenel

2003

Phys. Rev. B

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We examine anew the problem of vortex nucleation in ultrapure 4 He with particular attention on the regime below 0.15 K, which is thought to involve quantum tunneling. The critical velocity data obtained in phaseslippage experiments on two samples with less than 1 ppb of 3 He impurities are reanalyzed so as to provide in a direct way the vortex nucleation rate. The analysis is carried out in the theoretical framework that has been developed for the escape problem of a Brownian particle from a metastable cubic potential. This theory, which has been applied successfully to superconducting Josephson junctions, gives a fully consistent account of the experimental observations in both the temperature-dependent regime above 0.15 K and the low-temperature plateau.

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Section: The Experimental Resultsmentioning

confidence: 99%

Section: The Experimental Resultsmentioning

confidence: 99%

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Vortex nucleation in phase-slippage experiments in ultrapure superfluid4Hebelow 0.5 K

Varoquaux

Avenel

2003

Phys. Rev. B

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“…This experiment was carried out with superfluid 4 He at T ~ 12 mK. An experiment with better accuracy has been reported by the same authors [6], and independent corroboration has been provided by Schwab et al [7]. Later work by Bruckner and Packard [8] He [10,11].…”

Section: Superfluid Rf-squidsmentioning

confidence: 87%

Comparative analysis of optical-physical schemes of gyroscopes based on macroscopic quantum effects of superfluid helium isotopes (³He &⁴He)

Chernichenko¹,

Bidenko²,

Krobka³

et al. 2012

J. Phys.: Conf. Ser.

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“…The rotation of the system can then be inferred through its well-understood coupling to the probability amplitudes of the output states. Another novel technique involves measuring the quantized flow of superfluid helium [30,31].…”

Section: Rotation Sensingmentioning

confidence: 99%

Passive, free-space heterodyne laser gyroscope

Korth¹,

Heptonstall²,

Hall³

et al. 2016

Class. Quantum Grav.

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Abstract. Laser gyroscopes making use of the Sagnac effect have been used as highly accurate rotation sensors for many years. First used in aerospace and defense applications, these devices have more recently been used for precision seismology and in other research settings. In particular, mid-sized (∼ 1 m-scale) laser gyros have been under development as tilt sensors to augment the adaptive active seismic isolation systems in terrestrial interferometric gravitational wave detectors. The most prevalent design is the "active" gyroscope, in which the optical ring cavity used to measure the Sagnac degeneracy breaking is itself a laser resonator. In this article, we describe another topology: a "passive" gyroscope, in which the sensing cavity is not itself a laser but is instead tracked using external laser beams. While subject to its own limitations, this design is free from the deleterious lock-in effects observed in active systems, and has the advantage that it can be constructed using commercially available components. We demonstrate that our device achieves comparable sensitivity to those of similarly sized active laser gyroscopes.

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Detection of the Rotation of the Earth with a Superfluid Gyrometer

Cited by 84 publications

References 27 publications

Vortex nucleation in phase-slippage experiments in ultrapure superfluid4Hebelow 0.5 K

Vortex nucleation in phase-slippage experiments in ultrapure superfluid4Hebelow 0.5 K

Comparative analysis of optical-physical schemes of gyroscopes based on macroscopic quantum effects of superfluid helium isotopes (³He &⁴He)

Passive, free-space heterodyne laser gyroscope

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Detection of the Rotation of the Earth with a Superfluid Gyrometer

Cited by 84 publications

References 27 publications

Vortex nucleation in phase-slippage experiments in ultrapure superfluid4Hebelow 0.5 K

Vortex nucleation in phase-slippage experiments in ultrapure superfluid4Hebelow 0.5 K

Comparative analysis of optical-physical schemes of gyroscopes based on macroscopic quantum effects of superfluid helium isotopes (3He &4He)

Passive, free-space heterodyne laser gyroscope

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Product

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Comparative analysis of optical-physical schemes of gyroscopes based on macroscopic quantum effects of superfluid helium isotopes (³He &⁴He)