Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Broers, Lukas"'
Quantum computing in atom tweezers requires high-fidelity implementations of quantum operations. Here, we demonstrate the optimal implementation of the transition $|0\rangle \rightarrow |1\rangle$ of two levels, serving as a qubit, of an atom in a tw
Externí odkaz:
http://arxiv.org/abs/2411.02262
We study the photoconductivity response of graphene nanoribbons with armchair edges in the presence of dissipation using a Lindblad-von Neumann master equation formalism. We propose to control the transport properties by illuminating the system with
Externí odkaz:
http://arxiv.org/abs/2410.10957
Autor:
Cabrera, Cesar R., Henke, René, Broers, Lukas, Skulte, Jim, Collado, H. P. Ojeda, Biss, Hauke, Mathey, Ludwig, Moritz, Henning
Fermionic pairing and the superfluid order parameter change dramatically in low-dimensional systems such as high-T$_c$ superconductors. Here we show how the order parameter dynamics, which defines essential collective properties, is modified by stron
Externí odkaz:
http://arxiv.org/abs/2407.12645
We present an iterative optimal control method of quantum systems, aimed at an implementation of a desired operation with optimal fidelity. The update step of the method is based on the linear response of the fidelity to the control operators, and it
Externí odkaz:
http://arxiv.org/abs/2404.10462
Autor:
Broers, Lukas, Mathey, Ludwig
We propose a formalism that captures the algebraic structure of many-body two-level quantum systems, and directly motivates an efficient numerical method. This formalism is based on the binary representation of the enumeration-indices of the elements
Externí odkaz:
http://arxiv.org/abs/2404.09312
Autor:
Broers, Lukas, Mathey, Ludwig
We present the non-linear DC photoconductivity of graphene under strong infra-red (IR) radiation. The photoconductivity is obtained as the response to a strong DC electric field, with field strengths outside of the linear-response regime, while the I
Externí odkaz:
http://arxiv.org/abs/2312.13217
Autor:
Heimann, Nicolas, Broers, Lukas, Pintul, Nejira, Petersen, Tobias, Sponselee, Koen, Ilin, Alexander, Becker, Christoph, Mathey, Ludwig
We demonstrate machine learning assisted design of a two-qubit gate in a Rydberg tweezer system. Two low-energy hyperfine states in each of the atoms represent the logical qubit and a Rydberg state acts as an auxiliary state to induce qubit interacti
Externí odkaz:
http://arxiv.org/abs/2306.08691
Autor:
Broers, Lukas, Mathey, Ludwig
We demonstrate the robustness of the recently established Floquet-assisted superradiant phase of the parametrically driven dissipative Dicke model, inspired by light-induced dynamics in graphene. In particular, we show the robustness of this state ag
Externí odkaz:
http://arxiv.org/abs/2211.01320
Autor:
Broers, Lukas, Mathey, Ludwig
Publikováno v:
SciPost Phys. 14, 018 (2023)
We demonstrate the emergence of a non-equilibrium superradiant phase in the dissipative Rabi-Dicke model. This phase is characterized by a photonic steady state that oscillates with a frequency close to the cavity frequency, in contrast to the consta
Externí odkaz:
http://arxiv.org/abs/2203.07434
Autor:
Broers, Lukas, Mathey, Ludwig
Publikováno v:
Phys. Rev. Research 6, 013076 (2024)
Quantum machine learning has emerged as a promising utilization of near-term quantum computation devices. However, algorithmic classes such as variational quantum algorithms have been shown to suffer from barren plateaus due to vanishing gradients in
Externí odkaz:
http://arxiv.org/abs/2111.08085