Výsledky vyhledávání - "Christina Pöltl"

Scanning gate experiments: From strongly to weakly invasive probes

Autor: Andrea Hofmann, Richard Steinacher, Thomas Ihn, Wilhelm Zwerger, Rodolfo A. Jalabert, Werner Wegscheider, Christina Pöltl, Klaus Ensslin, Christian Reichl, Dietmar Weinmann, Tobias Krähenmann

An open resonator fabricated in a two-dimensional electron gas is used to explore the transition from strongly invasive scanning gate microscopy to the perturbative regime of weak tip-induced potentials. With the help of numerical simulations that fa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7373067886e58af7097462c1c35e4204
https://doi.org/10.1103/physrevb.98.075426

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Classical origin of conductance oscillations in an integrable cavity

Autor: Rodolfo A. Jalabert, Christina Pöltl, Aleksey Kozikov, Thomas Ihn, Dietmar Weinmann, Werner Wegscheider, Christian Reichl, Klaus Ensslin

Publikováno v: Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2016, 94, pp.195304. ⟨10.1103/PhysRevB.94.195304⟩
Pöltl, C, Kozikov, A, Ensslin, K, Ihn, T, Jalabert, R A, Reichl, C, Wegscheider, W & Weinmann, D 2016, ' Classical origin of conductance oscillations in an integrable cavity ', Physical Review B, vol. 94, no. 19, 195304 . https://doi.org/10.1103/PhysRevB.94.195304

Scanning gate microscopy measurements in a circular ballistic cavity with a tip placed near its center yield a non-monotonic dependence of the conductance on the tip voltage. Detailed numerical quantum calculations reproduce these conductance oscilla

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5e964d5d64f83914327a28d3c1aed5e
https://doi.org/10.1103/physrevb.94.195304

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Waiting time distributions for the transport through a quantum-dot tunnel coupled to one normal and one superconducting lead

Autor: Michele Governale, Christina Pöltl, Leila Rajabi

Publikováno v: Physical review letters. 111(6)

We have studied the Waiting Time Distributions (WTDs) for sub-gap transport through a single-level quantum dot tunnel coupled to one normal and one superconducting lead. The WTDs reveal the internal dynamics of the system in particular the coherent t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbe5c39d6f79700bee6fb345f3be8ac0
https://pubmed.ncbi.nlm.nih.gov/23971603

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Spin-entangled two-particle dark state in quantum transport through coupled quantum dots

Autor: Christina Pöltl, Clive Emary, Tobias Brandes

Publikováno v: Physical Review B. 87

We present a transport setup of coupled quantum dots that enables the creation of spatially separated spin-entangled two-electron dark states. We prove the existence of an entangled transport dark state by investigating the system Hamiltonian without

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::770cea4caa1072c9e18b019f9ff6f6a9
https://doi.org/10.1103/physrevb.87.045416

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Bunching and anti-bunching in electronic transport

Autor: Tobias Brandes, Clive Emary, Julia Kabuss, Christina Pöltl, Alexander Carmele, Andreas Knorr

In quantum optics the $g^{(2)}$-function is a standard tool to investigate photon emission statistics. We define a $g^{(2)}$-function for electronic transport and use it to investigate the bunching and anti-bunching of electron currents. Importantly,

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http://arxiv.org/abs/1201.6323

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Dynamics of interacting transport qubits

Autor: Christina Pöltl, Tobias Brandes, Gernot Schaller, Christian Nietner

We investigate the electronic transport through two parallel double quantum dots coupled both capacitively and via a perpendicularly aligned charge qubit. The presence of the qubit leads to a modification of the coherent tunnel amplitudes of each dou

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Feedback stabilization of pure states in quantum transport

Autor: Tobias Brandes, Christina Pöltl, Clive Emary

We propose a feedback control scheme for generating and stabilizing pure states of transport devices, such as charge qubits, under non-equilibrium conditions. The purification of the device state is conditioned on single electron jumps and leaves a c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f48a7a4e4df6f9bf2523cd453727c6fd
http://arxiv.org/abs/1103.2710

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Three-level mixing and dark states in transport through quantum dots

Autor: Tobias Brandes, Christina Pöltl, Clive Emary

We consider theoretically the transport through the double quantum dot structure of the recent experiment of C. Payette {\it et al.} [Phys. Rev. Lett. {\bf 102}, 026808 (2009)] and calculate stationary current and shotnoise. Three-level mixing gives

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Two-Particle Dark State in the Transport through a Triple Quantum Dot

Autor: Christina Pöltl, Tobias Brandes, Clive Emary

We study transport through a triple quantum dot in a triangular geometry with applied bias such that both singly- and doubly- charged states participate. We describe the formation of electronic dark states -- coherent superpositions that block curren

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