The Interplay Between Electron Localization, Magnetic Order, and Jahn-Teller Distortion that Dictates LiMnO$_2$ Phase Stability

Posted by dbos Berkeley

Kavli Affiliate: Kristin A. Persson | First 5 Authors: Ronald L. Kam, Luca Binci, Aaron D. Kaplan, Kristin A. Persson, Nicola Marzari | Summary: The development of Mn-rich cathodes for Li-ion batteries promises to alleviate supply chain bottlenecks in battery manufacturing. Challenges in Mn-rich cathodes arise from Jahn-Teller (JT) distortions of Mn$^{3+}$, Mn migration, and […]


Continue.. The Interplay Between Electron Localization, Magnetic Order, and Jahn-Teller Distortion that Dictates LiMnO$_2$ Phase Stability

Kramers-protected hardware-efficient error correction with Andreev spin qubits

Posted by dbos Delft

Kavli Affiliate: Anton R. Akhmerov | First 5 Authors: Haoran Lu, Isidora Araya Day, Anton R. Akhmerov, Bernard van Heck, Valla Fatemi | Summary: We propose an architecture for bit flip error correction of Andreev spins that is protected by Kramers’ degeneracy. Specifically, we show that a coupling network of linear inductors results in a […]


Continue.. Kramers-protected hardware-efficient error correction with Andreev spin qubits

Kramers-protected hardware-efficient error correction with Andreev spin qubits

Posted by dbos Delft

Kavli Affiliate: Anton R. Akhmerov | First 5 Authors: Haoran Lu, Isidora Araya Day, Anton R. Akhmerov, Bernard van Heck, Valla Fatemi | Summary: We propose an architecture for bit-flip error correction of Andreev spins that is protected by Kramers’ degeneracy. Specifically, we show that a coupling network of linear inductors and Andreev spin qubits […]


Continue.. Kramers-protected hardware-efficient error correction with Andreev spin qubits

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

Posted by dbos Delft

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

Posted by dbos Delft

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

Posted by dbos Delft

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

Posted by dbos Delft

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

Posted by dbos Delft

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

Quantum particle in the wrong box (or: the perils of finite-dimensional approximations)

Posted by dbos Berkeley

Kavli Affiliate: Felix Fischer | First 5 Authors: Felix Fischer, Daniel Burgarth, Davide Lonigro, , | Summary: When numerically simulating the unitary time evolution of an infinite-dimensional quantum system, one is usually led to treat the Hamiltonian $H$ as an ”infinite-dimensional matrix” by expressing it in some orthonormal basis of the Hilbert space, and then […]


Continue.. Quantum particle in the wrong box (or: the perils of finite-dimensional approximations)

Quantum particle in the wrong box (or: the perils of finite-dimensional approximations)

Posted by dbos Berkeley

Kavli Affiliate: Felix Fischer | First 5 Authors: Felix Fischer, Daniel Burgarth, Davide Lonigro, , | Summary: When numerically simulating the unitary time evolution of an infinite-dimensional quantum system, one is usually led to treat the Hamiltonian $H$ as an "infinite-dimensional matrix" by expressing it in some orthonormal basis of the Hilbert space, and then […]


Continue.. Quantum particle in the wrong box (or: the perils of finite-dimensional approximations)