109 citations · 688 across the 29 of their papers we have counts for
29 papers
Spin-cQED with bulk germanium spin qubits
A. -F. Kalo, E. A. Rodríguez-Mena, J. C. Abadillo-Uriel +2
Unstrained bulk germanium is a particularly attractive material for circuit quantum electrodynamics with spins (spin-cQED). We show, through systematic modeling and comparison with…
All-electrical dephasing-protected spin qubits in altermagnets
José Carlos Abadillo-Uriel, Andrea Maiani, Alberto Cortijo +2
We propose altermagnetic semiconductors as a platform for field-free, all-electrically controlled spin qubits in gate-defined quantum dots. The momentum-dependent spin splitting of…
Disorder-independent hole spin manipulation by hopping
Biel Martinez, Ana Sempere-Sanchis, José C. Abadillo-Uriel +1
Spin manipulation by hopping has recently emerged as a promising strategy to control hole spins in quantum dots using exclusively baseband control, thereby mitigating power dissipa…
Granular aluminum induced superconductivity in germanium for hole spin-based hybrid devices
Giorgio Fabris, Paul Falthansl-Scheinecker, Devashish Shah +19
In superconductor-semiconductor hybrid structures, superconductivity and spin polarization are competing effects as magnetic fields break Cooper pairs. They can be combined using t…
Switchable spin-photon coupling with hole spins in single-quantum dots
Carlos Sagaseta, María José Calderón, José Carlos Abadillo-Uriel
Spin qubits in semiconductor quantum dots offer a gate-tunable platform for quantum information processing. While two-qubit interactions are typically realized through exchange cou…
Sweet-spot protection of hole spins in sparse arrays via spin-dependent magnetotunneling
Esteban A. Rodríguez-Mena, Biel Martínez, Ahmad Fouad Kalo +2
Recent advances in the scaling of spin qubits have led to the development of sparse architectures where spin qubits are distributed across multiple quantum dots. This distributed a…
Coherence of a hole spin flopping-mode qubit in a circuit quantum electrodynamics environment
Léo Noirot, Cécile X. Yu, José C. Abadillo-Uriel +5
The entanglement of microwave photons and spin qubits in silicon represents a pivotal step forward for quantum information processing utilizing semiconductor quantum dots. Such hyb…
Theory of superconducting proximity effect in hole-based hybrid semiconductor-superconductor devices
D. Michel Pino, Rubén Seoane-Souto, Maria José Calderón +2
Hybrid superconductor-semiconductor systems have received a great deal of attention in the last few years because of their potential for quantum engineering, including novel qubits…
Optimal operation of hole spin qubits
Marion Bassi, Esteban-Alonso Rodrıguez-Mena, Boris Brun +11
Hole spins in silicon or germanium quantum dots have emerged as a compelling solid-state platform for scalable quantum processors. Besides relying on well-established manufacturing…
Unifying Floquet theory of longitudinal and dispersive readout
Alessandro Chessari, Esteban A. Rodríguez-Mena, José Carlos Abadillo-Uriel +5
We devise a Floquet theory of longitudinal and dispersive readout in circuit QED. By studying qubits coupled to cavity photons and driven at the resonance frequency of the cavity $…
Linear-in-momentum spin orbit interactions in planar Ge/GeSi heterostructures and spin qubits
Esteban A. Rodríguez-Mena, José Carlos Abadillo-Uriel, Gaëtan Veste +4
We investigate the existence of linear-in-momentum spin-orbit interactions in the valence band of Ge/GeSi heterostructures using an atomistic tight-binding method. We show that sym…
Hole spin driving by strain-induced spin-orbit interactions
José Carlos Abadillo-Uriel, Esteban A. Rodríguez-Mena, Biel Martinez +1
Hole spins in semiconductor quantum dots can be efficiently manipulated with radio-frequency electric fields owing to the strong spin-orbit interactions in the valence bands. Here…
Hole spin manipulation in inhomogeneous and non-separable electric fields
Biel Martinez, José Carlos Abadillo-Uriel, Esteban A. Rodríguez-Mena +1
The usual models for electrical spin manipulation in semiconductor quantum dots assume that the confinement potential is separable in the three spatial dimensions and that the AC d…
Strong coupling between a photon and a hole spin in silicon
Cécile X. Yu, Simon Zihlmann, José C. Abadillo-Uriel +11
Spins in semiconductor quantum dots constitute a promising platform for scalable quantum information processing. Coupling them strongly to the photonic modes of superconducting mic…
Tunable hole spin-photon interaction based on g-matrix modulation
V. P. Michal, J. C. Abadillo-Uriel, S. Zihlmann +3
We consider a spin circuit-QED device where a superconducting microwave resonator is capacitively coupled to a single hole confined in a semiconductor quantum dot. Thanks to the st…
A single hole spin with enhanced coherence in natural silicon
N. Piot, B. Brun, V. Schmitt +14
Semiconductor spin qubits based on spin-orbit states are responsive to electric field excitation allowing for practical, fast and potentially scalable qubit control. Spin-electric…
Non-reciprocal Pauli Spin Blockade in a Silicon Double Quantum Dot
Theodor Lundberg, David J. Ibberson, Jing Li +12
Spin qubits in gate-defined silicon quantum dots are receiving increased attention thanks to their potential for large-scale quantum computing. Readout of such spin qubits is done…
Two-body Wigner molecularization in asymmetric quantum dot spin qubits
José C. Abadillo-Uriel, Biel Martinez, Michele Filippone +1
Coulomb interactions strongly influence the spectrum and the wave functions of few electrons or holes confined in a quantum dot. In particular, when the confinement potential is no…
Long-range two-hybrid-qubit gates mediated by a microwave cavity with red sidebands
J. C. Abadillo-Uriel, Evelyn King, S. N. Coppersmith +1
Implementing two-qubit gates via strong coupling between quantum-dot qubits and a superconducting microwave cavity requires achieving coupling rates that are much faster than decoh…
Coherent control and spectroscopy of a semiconductor quantum dot Wigner molecule
J. Corrigan, J. P. Dodson, H. Ekmel Ercan +12
Multi-electron semiconductor quantum dots have found wide application in qubits, where they enable readout and enhance polarizability. However, coherent control in such dots has ty…
Realization of a Qubit: energy spectroscopy and coherence
Benedikt Kratochwil, Jonne V. Koski, Andreas J. Landig +9
The energy landscape of a single electron in a triple quantum dot can be tuned such that the energy separation between ground and excited states becomes a flat function of the rele…
Enhancing the dipolar coupling of a - qubit with a transverse sweet spot
J. C. Abadillo-Uriel, M. A. Eriksson, S. N. Coppersmith +1
A fundamental design challenge for quantum dot spin qubits is to extend the strength and range of qubit interactions while suppressing their coupling to the environment, since both…
Strong photon coupling to the quadrupole moment of an electron in solid state
Jonne V. Koski, Andreas J. Landig, Maximilian Russ +11
The implementation of circuit quantum electrodynamics allows coupling distant qubits by microwave photons hosted in on-chip superconducting resonators. Typically, the qubit-photon…
Coherent long-distance spin-qubit-transmon coupling
A. J. Landig, J. V. Koski, P. Scarlino +10
Spin qubits and superconducting qubits are among the promising candidates for a solid state quantum computer. For the implementation of a hybrid architecture which can profit from…