Zobrazeno 1 - 10
of 269
pro vyhledávání: '"Szechenyi, A."'
Publikováno v:
Physics Letters A 499, 129349 (2024)
We present optimized distillation schemes for preparing Greenberger-Horne-Zeilinger (GHZ) states. Our approach relies on training variational quantum circuits with white noise affected GHZ states as inputs. Optimizing for a single iteration of the sc
Externí odkaz:
http://arxiv.org/abs/2311.04646
Autor:
John, Valentin, Borsoi, Francesco, György, Zoltán, Wang, Chien-An, Széchenyi, Gábor, van Riggelen, Floor, Lawrie, William I. L., Hendrickx, Nico W., Sammak, Amir, Scappucci, Giordano, Pályi, András, Veldhorst, Menno
Publikováno v:
Phys. Rev. Lett. 132, 067001 (2024)
Electrically-driven spin resonance is a powerful technique for controlling semiconductor spin qubits. However, it faces challenges in qubit addressability and off-resonance driving in larger systems. We demonstrate coherent bichromatic Rabi control o
Externí odkaz:
http://arxiv.org/abs/2308.01720
Autor:
Rozgonyi, Áron, Széchenyi, Gábor
Publikováno v:
New J. Phys. 25 103004 (2023)
Enhancing the lifetime of qubits with quantum code-based memories on different quantum hardware is a significant step towards fault-tolerant quantum computing. We theoretically show that the break-even point, i.e., preserving arbitrary quantum inform
Externí odkaz:
http://arxiv.org/abs/2303.17810
Publikováno v:
Phys. Rev. B 106, 155412 (2022)
Electrically driven spin resonance (EDSR) is an established tool for controlling semiconductor spin qubits. Here, we theoretically study a frequency-mixing variant of EDSR, where two driving tones with different drive frequencies are applied, and the
Externí odkaz:
http://arxiv.org/abs/2206.00399
Akademický článek
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Autor:
Széchenyi, Gábor, Pályi, András
Publikováno v:
Phys. Rev. B 101, 235441 (2020)
We theoretically study a scheme to distinguish the two ground states of a one-dimensional topological superconductor, which could serve as a basis for the readout of Majorana qubits. The scheme is based on parity-to-charge conversion, i.e., the groun
Externí odkaz:
http://arxiv.org/abs/1909.02326
Publikováno v:
Phys. Rev. B 100, 045414 (2019)
Topological properties of quantum systems could provide protection of information against environmental noise, and thereby drastically advance their potential in quantum information processing. Most proposals for topologically protected quantum gates
Externí odkaz:
http://arxiv.org/abs/1902.01358
Publikováno v:
2D Materials 5, 035004 (2018)
We theoretically study a single-electron spin-valley qubit in an electrostatically defined quantum dot in a transition metal dichalcogenide monolayer, focusing on the example of MoS$_2$. Coupling of the qubit basis states for coherent control is chal
Externí odkaz:
http://arxiv.org/abs/1711.02353
Publikováno v:
Phys. Rev. B 97, 245417 (2018)
Nuclear spins of dopant atoms in semiconductors are promising candidates as quantum bits, due to the long lifetime of their quantum states. Conventionally, coherent control of nuclear spins is done using ac magnetic fields. Using the example of a pho
Externí odkaz:
http://arxiv.org/abs/1707.00581
Publikováno v:
Phys. Rev. B 96, 245302 (2017)
Two electrons in a quantum dot repel each other: their interaction can be characterized by a positive interaction energy. From the theory of superconductivity, we also know that mechanical vibrations of the crystal lattice can make the electron-elect
Externí odkaz:
http://arxiv.org/abs/1703.06481