A two-dimensional 10-qubit array in germanium with robust and localised qubit control

Kavli Affiliate: Giordano Scappucci | First 5 Authors: Valentin John, Cécile X. Yu, Barnaby van Straaten, Esteban A. Rodríguez-Mena, Mauricio Rodríguez | Summary: Quantum computers require the systematic operation of qubits with high fidelity. For holes in germanium, the spin-orbit interaction allows for textit{in situ} electric fast and high-fidelity qubit gates. However, the interaction also […]


Continue.. A two-dimensional 10-qubit array in germanium with robust and localised qubit control

A two-dimensional 10-qubit array in germanium with robust and localised qubit control

Kavli Affiliate: Menno Veldhorst | First 5 Authors: Valentin John, Cécile X. Yu, Barnaby van Straaten, Esteban A. Rodríguez-Mena, Mauricio Rodríguez | Summary: Quantum computers require the systematic operation of qubits with high fidelity. For holes in germanium, the spin-orbit interaction allows for textit{in situ} electric fast and high-fidelity qubit gates. However, the interaction also […]


Continue.. A two-dimensional 10-qubit array in germanium with robust and localised qubit control

A two-dimensional 10-qubit array in germanium with robust and localised qubit control

Kavli Affiliate: Menno Veldhorst | First 5 Authors: Valentin John, Cécile X. Yu, Barnaby van Straaten, Esteban A. Rodríguez-Mena, Mauricio Rodríguez | Summary: Quantum computers require the systematic operation of qubits with high fidelity. For holes in germanium, the spin-orbit interaction allows for textit{in situ} electric fast and high-fidelity qubit gates. However, the interaction also […]


Continue.. A two-dimensional 10-qubit array in germanium with robust and localised qubit control

A two-dimensional 10-qubit array in germanium with robust and localised qubit control

Kavli Affiliate: Menno Veldhorst | First 5 Authors: Valentin John, Cécile X. Yu, Barnaby van Straaten, Esteban A. Rodríguez-Mena, Mauricio Rodríguez | Summary: Quantum computers require the systematic operation of qubits with high fidelity. For holes in germanium, the spin-orbit interaction allows for textit{in situ} electric fast and high-fidelity qubit gates. However, the interaction also […]


Continue.. A two-dimensional 10-qubit array in germanium with robust and localised qubit control

A two-dimensional 10-qubit array in germanium with robust and localised qubit control

Kavli Affiliate: Menno Veldhorst | First 5 Authors: Valentin John, Cécile X. Yu, Barnaby van Straaten, Esteban A. Rodríguez-Mena, Mauricio Rodríguez | Summary: Quantum computers require the systematic operation of qubits with high fidelity. For holes in germanium, the spin-orbit interaction allows for textit{in situ} electric fast and high-fidelity qubit gates. However, the interaction also […]


Continue.. A two-dimensional 10-qubit array in germanium with robust and localised qubit control

Scattering theory of higher order topological phases

Kavli Affiliate: Anton R. Akhmerov | First 5 Authors: R. Johanna Zijderveld, Isidora Araya Day, Anton R. Akhmerov, , | Summary: The surface states of intrinsic higher order topological phases are protected by the spatial symmetries of a finite sample. This property makes the existing scattering theory of topological invariants inapplicable because the scattering geometry […]


Continue.. Scattering theory of higher order topological phases

Baseband control of single-electron silicon spin qubits in two dimensions

Kavli Affiliate: Giordano Scappucci | First 5 Authors: Florian K. Unseld, Brennan Undseth, Eline Raymenants, Yuta Matsumoto, Saurabh Karwal | Summary: Micromagnet-enabled electric-dipole spin resonance (EDSR) is an established method of high-fidelity single-spin control in silicon. However, the resulting architectural limitations have restrained silicon quantum processors to one-dimensional arrays, and heating effects from the associated […]


Continue.. Baseband control of single-electron silicon spin qubits in two dimensions

Topological finite size effect in one-dimensional chiral symmetric systems

Kavli Affiliate: Eliska Greplova | First 5 Authors: Guliuxin Jin, D. O. Oriekhov, Lukas Johannes Splitthoff, Eliska Greplova, | Summary: Topological phases of matter have been widely studied for their robustness against impurities and disorder. The broad applicability of topological materials relies on the reliable transition from idealized, mathematically perfect models to finite, real-world implementations. […]


Continue.. Topological finite size effect in one-dimensional chiral symmetric systems

Charge-induced energy shift of a single-spin qubit under a magnetic-field gradient

Kavli Affiliate: Giordano Scappucci | First 5 Authors: Takashi Kobayashi, Akito Noiri, Takashi Nakajima, Kenta Takeda, Leon C. Camenzind | Summary: An electron confined by a semiconductor quantum dot (QD) can be displaced by changes in electron occupations of surrounding QDs owing to the Coulomb interaction. For a single-spin qubit in an inhomogeneous magnetic field, […]


Continue.. Charge-induced energy shift of a single-spin qubit under a magnetic-field gradient

Magnon spintronics with Van der Waals magnets: from fundamentals to devices

Kavli Affiliate: Toeno Van Der Sar | First 5 Authors: Samuel Mañas-Valero, Toeno van der Sar, Rembert A. Duine, Bart van Wees, | Summary: Spintronics is concerned with replacing charge current with current of spin, the electron’s intrinsic angular momentum. In magnetic insulators, spin currents are carried by magnons, the quanta of spin-wave excitations on […]


Continue.. Magnon spintronics with Van der Waals magnets: from fundamentals to devices