@article{MTMT:2571550,
	title = {Maximal Rabi frequency of an electrically driven spin in a disordered magnetic field},
	url = {https://m2.mtmt.hu/api/publication/2571550},
	author = {Széchenyi, Gábor and Pályi, András},
	doi = {10.1103/PhysRevB.89.115409},
	journal-iso = {PHYS REV B},
	journal = {PHYSICAL REVIEW B},
	volume = {89},
	unique-id = {2571550},
	issn = {2469-9950},
	abstract = {We present a theoretical study of the spin dynamics of a single electron confined in a quantum dot. Spin dynamics is induced by the interplay of electrical driving and the presence of a spatially disordered magnetic field, the latter being transverse to a homogeneous magnetic field. We focus on the case of strong driving, i.e., when the oscillation amplitude A of the electron's wave packet is comparable to the quantum dot length L. We show that electrically driven spin resonance can be induced in this system by subharmonic driving, i.e., if the excitation frequency is an integer fraction (1/2, 1/3, etc.) of the Larmor frequency. At strong driving we find that (i) the Rabi frequencies at the subharmonic resonances are comparable to the Rabi frequency at the fundamental resonance, and (ii) at each subharmonic resonance, the Rabi frequency can be maximized by setting the drive strength to an optimal, finite value. In the context of practical quantum information processing, these findings highlight the availability of subharmonic resonances for qubit control with effectivity close to that of the fundamental resonance, and the possibility that increasing the drive strength might lead to a decreasing qubit-flip speed. Our simple model is applied to describe electrical control of a spin-valley qubit in a weakly disordered carbon nanotube.},
	keywords = {RESONANCE; Qubit; SINGLE-ELECTRON SPIN},
	year = {2014},
	eissn = {2469-9969},
	orcid-numbers = {Széchenyi, Gábor/0000-0002-4039-7546}
}

@article{MTMT:2668489,
	title = {Finite-Bias Cooper Pair Splitting},
	url = {https://m2.mtmt.hu/api/publication/2668489},
	author = {Hofstetter, L and Csonka, Szabolcs and Baumgartner, A and Fülöp, Gergő and d’Hollosy, S and Nygård, J and Schönenberger, C},
	doi = {10.1103/PhysRevLett.107.136801},
	journal-iso = {PHYS REV LETT},
	journal = {PHYSICAL REVIEW LETTERS},
	volume = {107},
	unique-id = {2668489},
	issn = {0031-9007},
	year = {2011},
	eissn = {1079-7114}
}

@article{MTMT:2651079,
	title = {Cooper pair splitter realized in a two-quantum-dot Y-junction},
	url = {https://m2.mtmt.hu/api/publication/2651079},
	author = {Hofstetter, L and Csonka, Szabolcs and Nygard, J and Schonenberger, C},
	doi = {10.1038/nature08432},
	journal-iso = {NATURE},
	journal = {NATURE},
	volume = {461},
	unique-id = {2651079},
	issn = {0028-0836},
	abstract = {Non-locality is a fundamental property of quantum mechanics that manifests itself as correlations between spatially separated parts of a quantum system. A fundamental route for the exploration of such phenomena is the generation of Einstein-Podolsky-Rosen (EPR) pairs(1) of quantum-entangled objects for the test of so-called Bell inequalities(2). Whereas such experimental tests of non-locality have been successfully conducted with pairwise entangled photons, it has not yet been possible to realize an electronic analogue of it in the solid state, where spin-1/2 mobile electrons are the natural quantum objects(3). The difficulty stems from the fact that electrons are immersed in a macroscopic ground state-the Fermi sea-which prevents the straightforward generation and splitting of entangled pairs of electrons on demand. A superconductor, however, could act as a source of EPR pairs of electrons, because its ground-state is composed of Cooper pairs in a spin-singlet state(4). These Cooper pairs can be extracted from a superconductor by tunnelling, but, to obtain an efficient EPR source of entangled electrons, the splitting of the Cooper pairs into separate electrons has to be enforced. This can be achieved by having the electrons 'repel' each other by Coulomb interaction(5). Controlled Cooper pair splitting can thereby be realized by coupling of the superconductor to two normal metal drain contacts by means of individually tunable quantum dots. Here we demonstrate the first experimental realization of such a tunable Cooper pair splitter, which shows a surprisingly high efficiency. Our findings open a route towards a first test of the EPR paradox and Bell inequalities in the solid state.},
	year = {2009},
	eissn = {1476-4687},
	pages = {960-963}
}

@article{MTMT:2658371,
	title = {Giant Fluctuations and Gate Control of the g-Factor in InAs Nanowire Quantum Dots},
	url = {https://m2.mtmt.hu/api/publication/2658371},
	author = {Csonka, Szabolcs and Hofstetter, L and Freitag, F and Oberholzer, S and Schonenberger, C and Jespersen, TS and Aagesen, M and Nygard, J},
	doi = {10.1021/nl802418w},
	journal-iso = {NANO LETT},
	journal = {NANO LETTERS},
	volume = {8},
	unique-id = {2658371},
	issn = {1530-6984},
	year = {2008},
	eissn = {1530-6992},
	pages = {3932-3935}
}