Levitons in superconducting point contacts

Acciai, Matteo; Ronetti, Flavio; Ferraro, Dario; Rech, Jérôme; Jonckheere, Thibaut; Sassetti, Maura; Martin, Thierry

doi:10.1103/physrevb.100.085418

Cited by 16 publications

(8 citation statements)

References 98 publications

(152 reference statements)

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“…Several theoretical works [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] have investigated various properties of single-electron sources in this regime, and many experimental results [27][28][29][30][31][32][33][34][35][36][37][38] have shown that a high degree of control in the manipulation of single-electron excitations can be achieved. Moreover, extensions to interacting systems [39][40][41][42][43][44][45][46][47][48][49][50][51] have also been considered. In particular, the fractional quantum Hall regime plays a special role, due to the presence of fractionally charged quasiparticles, whose anyonic statistics can in principle be probed by electron quantum optics setups.…”

Section: Introductionmentioning

confidence: 99%

Influence of channel mixing in fermionic Hong-Ou-Mandel experiments

Acciai,

Roulleau,

Taktak

et al. 2022

Preprint

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We consider an electronic Hong-Ou-Mandel interferometer in the integer quantum Hall regime, where the colliding electronic states are generated by applying voltage pulses (creating for instance Levitons) to ohmic contacts. The aim of this work is to investigate possible mechanisms leading to a reduced visibility of the Pauli dip, i.e., the noise suppression expected for synchronized sources. It is known that electron-electron interactions cannot account for this effect and always lead to a full suppression of the Hong-Ou-Mandel noise. Focusing on the case of filling factor ν = 2, we show instead that a reduced visibility of the Pauli dip can result from mixing of the copropagating edge channels, arising from tunneling events between them.

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Section: Introductionmentioning

confidence: 99%

Influence of channel mixing in fermionic Hong-Ou-Mandel experiments

Acciai,

Roulleau,

Taktak

et al. 2022

Preprint

Self Cite

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“…Heat transport and fluctuations of dynamic single-electron emitters have also been considered [79][80][81][82][83][84] as well as the distribution of waiting times between emitted particles [85][86][87][88][89]. In addition, methods for performing signal processing of quantum electric currents have been developed [90,91], and combinations of voltage pulses and superconductors have been discussed [92,93]. The combined effects of several singleparticle sources, as well as multi-particle emitters, have also been investigated [94][95][96][97][98][99][100][101].…”

Section: Introductionmentioning

confidence: 99%

Multi-Particle Interference in an Electronic Mach–Zehnder Interferometer

Kotilahti

Burset

Moskalets

et al. 2021

Entropy

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The development of dynamic single-electron sources has made it possible to observe and manipulate the quantum properties of individual charge carriers in mesoscopic circuits. Here, we investigate multi-particle effects in an electronic Mach–Zehnder interferometer driven by a series of voltage pulses. To this end, we employ a Floquet scattering formalism to evaluate the interference current and the visibility in the outputs of the interferometer. An injected multi-particle state can be described by its first-order correlation function, which we decompose into a sum of elementary correlation functions that each represent a single particle. Each particle in the pulse contributes independently to the interference current, while the visibility (given by the maximal interference current) exhibits a Fraunhofer-like diffraction pattern caused by the multi-particle interference between different particles in the pulse. For a sequence of multi-particle pulses, the visibility resembles the diffraction pattern from a grid, with the role of the grid and the spacing between the slits being played by the pulses and the time delay between them. Our findings may be observed in future experiments by injecting multi-particle pulses into a Mach–Zehnder interferometer.

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“…Heat transport and fluctuations of dynamic single-electron emitters have also been considered [81][82][83][84][85][86] as well as the distribution of waiting times between emitted particles [87][88][89][90][91]. In addition, methods for performing signal processing of quantum electric currents have been developed [92,93], and combinations of voltage pulses and superconductors have been discussed [94,95]. The combined effects of several single-particle sources as well as multi-particle emitters have also been investigated [96][97][98][99][100][101][102][103].…”

Section: Introductionmentioning

confidence: 99%

Multi-particle interference in an electronic Mach-Zehnder interferometer

Kotilahti,

Burset,

Moskalets

et al. 2021

Preprint

View full text Add to dashboard Cite

The recent development of dynamic single-electron sources makes it possible to observe and manipulate the quantum properties of individual charge carriers in mesoscopic circuits. Here, we investigate multi-particle effects in an electronic Mach-Zehnder interferometer driven by dynamic voltage pulses. To this end, we employ a Floquet scattering formalism to evaluate the interference current and the visibility in the outputs of the interferometer. An injected multi-particle state can be described by its first-order correlation function, which we decompose into a sum of elementary correlation functions that each represent a single particle. Each particle in the pulse contributes independently to the interference current, while the visibility (determined by the maximal interference current) exhibits a Fraunhofer-like diffraction pattern caused by the multi-particle interference between different particles in the pulse. For a sequence of multi-particle pulses, the visibility resembles the diffraction pattern from a grid, with the role of the grid and the spacing between the slits being played by the pulses and the time delay between them. Our findings may be observed in future experiments by injecting multi-particle pulses into an electronic Mach-Zehnder interferometer.

show abstract

Levitons in superconducting point contacts

Cited by 16 publications

References 98 publications

Influence of channel mixing in fermionic Hong-Ou-Mandel experiments

Influence of channel mixing in fermionic Hong-Ou-Mandel experiments

Multi-Particle Interference in an Electronic Mach–Zehnder Interferometer

Multi-particle interference in an electronic Mach-Zehnder interferometer

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