Search Results - "Kuemmeth, Ferdinand"
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Single-electron operations in a foundry-fabricated array of quantum dots
Published in Nature communications (16-12-2020)“…Silicon quantum dots are attractive for the implementation of large spin-based quantum processors in part due to prospects of industrial foundry fabrication…”
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2
Hole spin relaxation in Ge–Si core–shell nanowire qubits
Published in Nature nanotechnology (01-01-2012)“…Controlling decoherence is the biggest challenge in efforts to develop quantum information hardware 1 , 2 , 3 . Single electron spins in gallium arsenide are a…”
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3
Superconducting gatemon qubit based on a proximitized two-dimensional electron gas
Published in Nature nanotechnology (01-10-2018)“…The coherent tunnelling of Cooper pairs across Josephson junctions (JJs) generates a nonlinear inductance that is used extensively in quantum information…”
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4
Fast spin exchange across a multielectron mediator
Published in Nature communications (13-03-2019)“…Scalable quantum processors require tunable two-qubit gates that are fast, coherent and long-range. The Heisenberg exchange interaction offers fast and…”
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5
Fast Charge Sensing of Si/SiGe Quantum Dots via a High-Frequency Accumulation Gate
Published in Nano letters (14-08-2019)“…Quantum dot arrays are a versatile platform for the implementation of spin qubits, as high-bandwidth sensor dots can be integrated with single-, double-, and…”
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6
Protected solid-state qubits
Published in Applied physics letters (27-12-2021)“…The implementation of large-scale fault-tolerant quantum computers calls for the integration of millions of physical qubits with very low error rates. This…”
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7
Spectrum of the Nuclear Environment for GaAs Spin Qubits
Published in Physical review letters (28-04-2017)“…Using a singlet-triplet spin qubit as a sensitive spectrometer of the GaAs nuclear spin bath, we demonstrate that the spectrum of Overhauser noise agrees with…”
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8
Notch filtering the nuclear environment of a spin qubit
Published in Nature nanotechnology (01-01-2017)“…Nuclear spins in gallium arsenide produce noise at discrete frequencies, which can be notch-filtered efficiently to extend coherence times of electron spin…”
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9
Simultaneous Operations in a Two-Dimensional Array of Singlet-Triplet Qubits
Published in PRX quantum (08-10-2021)“…In many physical approaches to quantum computation, error-correction schemes assume the ability to form two-dimensional qubit arrays with nearest-neighbor…”
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10
Negative Spin Exchange in a Multielectron Quantum Dot
Published in Physical review letters (30-11-2017)“…We use a one-electron quantum dot as a spectroscopic probe to study the spin properties of a gate-controlled multielectron GaAs quantum dot at the transition…”
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11
Real-time two-axis control of a spin qubit
Published in Nature communications (23-02-2024)“…Optimal control of qubits requires the ability to adapt continuously to their ever-changing environment. We demonstrate a real-time control protocol for a…”
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12
Gate reflectometry in dense quantum dot arrays
Published in New journal of physics (01-03-2023)“…Abstract Silicon quantum devices are maturing from academic single- and two-qubit devices to industrially-fabricated dense quantum-dot (QD) arrays, increasing…”
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13
Spin of a Multielectron Quantum Dot and Its Interaction with a Neighboring Electron
Published in Physical review. X (21-03-2018)“…We investigate the spin of a multielectron GaAs quantum dot in a sequence of nine charge occupancies, by exchange coupling the multielectron dot to a…”
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14
Learning Coulomb Diamonds in Large Quantum Dot Arrays
Published in SciPost physics (01-10-2022)“…We introduce an algorithm that is able to find the facets of Coulomb diamonds in quantum dot arrays. We simulate these arrays using the constant-interaction…”
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15
Imaging Electromigration during the Formation of Break Junctions
Published in Nano letters (01-03-2007)“…Using a scanning electron microscope, we make real-time movies of gold nanowires during the process of electromigration. We confirm the importance of using a…”
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16
Measurement of Discrete Energy-Level Spectra in Individual Chemically Synthesized Gold Nanoparticles
Published in Nano letters (01-12-2008)“…We form single-electron transistors from individual chemically synthesized gold nanoparticles, 5−15 nm in diameter, with monolayers of organic molecules…”
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17
Microwave sensing of Andreev bound states in a gate-defined superconducting quantum point contact
Published in Physical review research (01-05-2022)“…We use a superconducting microresonator as a cavity to sense absorption of microwaves by a superconducting quantum point contact defined by surface gates over…”
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18
Anisotropic magnetoresistance and anisotropic tunneling magnetoresistance due to quantum interference in ferromagnetic metal break junctions
Published in Physical review letters (22-09-2006)“…We measure the low-temperature resistance of permalloy break junctions as a function of contact size and the magnetic field angle in applied fields large…”
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Semiconductor qubits in practice
Published in Nature reviews physics (01-03-2021)“…In the past decade, semiconducting qubits have made great strides in overcoming decoherence, improving the prospects for scalability and have become one of the…”
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Quantum transport in carbon nanotubes
Published in Reviews of modern physics (28-07-2015)“…Carbon nano-tubes with multifunctional capabilities are prime candidates for quantum wires for use in a variety of novel electronic devices. Unlike…”
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