Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Kurzmann, Annika"'
Autor:
Tong, Chuyao, Kurzmann, Annika, Garreis, Rebekka, Watanabe, Kenji, Taniguchi, Takashi, Ihn, Thomas, Ensslin, Klaus
Publikováno v:
Phys. Rev. Research 6, L012006 (2024)
Pauli blockade is a fundamental quantum phenomenon that also serves as a powerful tool for qubit manipulation and read-out. While most systems exhibit a simple even-odd pattern of double-dot Pauli spin blockade due to the preferred singlet pairing of
Externí odkaz:
http://arxiv.org/abs/2305.03479
Autor:
Tong, Chuyao, Ginzel, Florian, Huang, Wei Wister, Kurzmann, Annika, Garreis, Rebekka, Watanabe, Kenji, Taniguchi, Takashi, Burkard, Guido, Danon, Jeroen, Ihn, Thomas, Ensslin, Klaus
The spin degree of freedom is crucial for the understanding of any condensed matter system. Knowledge of spin-mixing mechanisms is not only essential for successful control and manipulation of spin-qubits, but also uncovers fundamental properties of
Externí odkaz:
http://arxiv.org/abs/2211.04882
Autor:
Garreis, Rebekka, Gerber, Jonas Daniel, Stará, Veronika, Tong, Chuyao, Gold, Carolin, Röösli, Marc, Watanabe, Kenji, Taniguchi, Takashi, Ensslin, Klaus, Ihn, Thomas, Kurzmann, Annika
Publikováno v:
Phys. Rev. Res. 5, 013042 (2023)
We measure telegraph noise of current fluctuations in an electrostatically defined quantum dot in bilayer graphene by real-time detection of single electron tunneling with a capacitively coupled neighboring quantum dot. Suppression of the second and
Externí odkaz:
http://arxiv.org/abs/2210.07759
Autor:
Bucko, Jozef, Schäfer, Frank, Herman, František, Garreis, Rebekka, Tong, Chuyao, Kurzmann, Annika, Ihn, Thomas, Greplova, Eliska
Bilayer graphene is a nanomaterial that allows for well-defined, separated quantum states to be defined by electrostatic gating and, therefore, provides an attractive platform to construct tunable quantum dots. When a magnetic field perpendicular to
Externí odkaz:
http://arxiv.org/abs/2203.00697
Autor:
Gächter, Lisa Maria, Garreis, Rebekka, Tong, Chuyao, Ruckriegel, Max Josef, Kratochwil, Benedikt, de Vries, Folkert Kornelis, Kurzmann, Annika, Watanabe, Kenji, Taniguchi, Takashi, Ihn, Thomas, Ensslin, Klaus, Huang, Wister Wei
Electrostatically defined quantum dots in bilayer graphene offer a promising platform for spin qubits with presumably long coherence times due to low spin-orbit coupling and low nuclear spin density. We demonstrate two different experimental approach
Externí odkaz:
http://arxiv.org/abs/2112.12091
Autor:
Kerski, Jens, Mannel, Hendrik, Lochner, Pia, Kleinherbers, Eric, Kurzmann, Annika, Ludwig, Arne, Wieck, Andreas D., König, Jürgen, Lorke, Axel, Geller, Martin
Single electron tunneling and its transport statistics have been studied for some time using high precision charge detectors. However, this type of detection requires advanced lithography, optimized material systems and low temperatures (mK). A promi
Externí odkaz:
http://arxiv.org/abs/2112.07417
Autor:
Kleinherbers, Eric, Stegmann, Philipp, Kurzmann, Annika, Geller, Martin, Lorke, Axel, König, Jürgen
Publikováno v:
Phys. Rev. Lett. 128, 087701 (2022)
Time-resolved studies of quantum systems are the key to understand quantum dynamics at its core. The real-time measurement of individual quantum numbers as they switch between certain discrete values, well known as random telegraph signal, is expecte
Externí odkaz:
http://arxiv.org/abs/2106.12502
Autor:
Tong, Chuyao, Kurzmann, Annika, Garreis, Rebekka, Huang, Wei Wister, Jele, Samuel, Eich, Marius, Ginzburg, Lev, Mittag, Christopher, Watanabe, Kenji, Taniguchi, Takashi, Ensslin, Klaus, Ihn, Thomas
Publikováno v:
Phys. Rev. Lett. 128, 067702 (2022)
Pauli blockade mechanisms -- whereby carrier transport through quantum dots is blocked due to selection rules even when energetically allowed -- are a direct manifestation of the Pauli exclusion principle, as well as a key mechanism for manipulating
Externí odkaz:
http://arxiv.org/abs/2106.04722
Autor:
Kurzmann, Annika, Kleeorin, Yaakov, Tong, Chuyao, Garreis, Rebekka, Knothe, Angelika, Eich, Marius, Mittag, Christopher, Gold, Carolin, de Vries, Folkert K., Watanabe, Kenji, Taniguchi, Takashi, Fal'ko, Vladimir, Meir, Yigal, Ihn, Thomas, Ensslin, Klaus
Publikováno v:
Nat Commun 12, 6004 (2021)
The Kondo effect is a cornerstone in the study of strongly correlated fermions. The coherent exchange coupling of conduction electrons to local magnetic moments gives rise to a Kondo cloud that screens the impurity spin. Whereas complete Kondo screen
Externí odkaz:
http://arxiv.org/abs/2103.04864
Autor:
Garreis, Rebekka, Knothe, Angelika, Tong, Chuyao, Eich, Marius, Gold, Carolin, Watanabe, Kenji, Taniguchi, Takashi, Fal'ko, Vladimir, Ihn, Thomas, Ensslin, Klaus, Kurzmann, Annika
Publikováno v:
Phys. Rev. Lett. 126, 147703 (2021)
Transport measurements through a few-electron circular quantum dot in bilayer graphene display bunching of the conductance resonances in groups of four, eight and twelve. This is in accordance with the spin and valley degeneracies in bilayer graphene
Externí odkaz:
http://arxiv.org/abs/2011.07951