Quantum oscillations between two weakly coupled reservoirs of superfluid 3He

Pereverzev, Sergey; Loshak, A.; Backhaus, Scott; Davis, J. C.; Packard, R. E.

doi:10.1038/41277

Cited by 171 publications

(147 citation statements)

References 19 publications

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“…The Josephson effect for neutral superfluids has already been observed with liquid 3 He [3] and 4 He [4] exhibiting the typical current-phase relation. It is characterized by an alternating current flowing through the central tunnelling barrier if a constant energy difference between both sides is applied.…”

Section: Introductionmentioning

confidence: 91%

Realization of a single Josephson junction for Bose–Einstein condensates

et al. 2005

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We report on the realization of a doublewell potential for Rubidium-87 Bose-Einstein condensates. The experimental setup allows the investigation of two different dynamical phenomena known for this system -Josephson oscillations and self-trapping. We give a detailed discussion of the experimental setup and the methods used for calibrating the relevant parameters. We compare our experimental findings with the predictions of an extended two-mode model and find quantitative agreement.

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Section: Introductionmentioning

confidence: 91%

Realization of a single Josephson junction for Bose–Einstein condensates

et al. 2005

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“…This bc , supported by experiment, has been used elsewhere [14] ,and is particularly relevant in the system regime [5][6][7] of pore scales ∼ ξ, ≪ l tex . The bc is enforced by Ψ → 0 over length scales ∼ ξ, and the contributions to F grad from |∇Ψ| contributions will dominate those from |∇B| ∼ |∇n| [15].…”

mentioning

confidence: 79%

“…The experimental geometry [5] is a superfluid of total mass density ρ in a pillbox of cross-section A, and length L, Eq. (1) is:…”

mentioning

confidence: 99%

Phase oscillations in superfluid 3 He - B weak links

et al. 2001

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Oscillations in quantum phase about a mean value of π, observed across micropores connecting two 3 He−B baths, are explained in a Ginzburg-Landau phenomenology. The dynamics arises from the Josephson phase relation,the interbath continuity equation, and helium boundary conditions. The pores are shown to act as Josephson tunnel junctions, and the dynamic variables are the inter bath phase difference and fractional difference in superfluid density at micropores. The system maps onto a non-rigid, momentum-shortened pendulum, with inverted-orientation oscillations about a vertical tilt angle φ = π, and other modes are predicted.

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“…It is necessary to note that microscopic theory of Josephson effect in a superfluid system is absent up to now. The history of experimental search of Josephson effect in superfluid He [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] demonstrates how confident one can now talk about its feasibility in such "nonelectric" material media which in turn allows us to extend on these systems an alternative scheme of resistance quantization offered by us. In this case, of course, we talk about flow resistance and not electric one.…”

Section: Is It Possible To Apply the Quantization Model To The Hydrodmentioning

confidence: 99%

“…The chemical potential difference μ 2 -μ 1 at the opposite ends of nanothrottle, will cause the wave phase of flowing matter to oscillate in time with "monoatomic Josephson" frequency 2πf ϕ =ω ϕ =(μ 2 -μ 1 )/ħ (that is frequency of quantum whistle [27,28] …”

Section: Is It Possible To Apply the Quantization Model To The Hydrodmentioning

confidence: 99%

The Model of Hydrodynamic Resistance Quantization in Capillaries with Superfluid Helium

Dresvyannikov¹,

Tskhovrebov²,

Zherikhina³

2017

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Abstract. In our earlier work, where the traces of effect of resistance quantization in thin bismuth films were studied, we proposed the model, explaining the phenomena observed. In contrast to traditional model of Landauer our explanation is based upon analogy with non-stationary Josephson effect and is valid for systems with super low density of charge carriers. The history of Josephson effect observation in superfluid helium is nearly half a century old: pioneer's experiments undertaken long ego in the group with the participation of famous theoretician P.W. Anderson led at last at our days to the creation of quite able-bodied quantum interferometer of DC-SQUID type in Berkeley laboratory. Thus, observation of Josephson effect in helium gives grounds to use our model to describe flowing of superfluid liquid in fine capillaries that allows predicting the effect of hydrodynamic resistance quantization.

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Quantum oscillations between two weakly coupled reservoirs of superfluid 3He

Cited by 171 publications

References 19 publications

Realization of a single Josephson junction for Bose–Einstein condensates

Realization of a single Josephson junction for Bose–Einstein condensates

Phase oscillations in superfluid 3 He - B weak links

The Model of Hydrodynamic Resistance Quantization in Capillaries with Superfluid Helium

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