Mitigation of exchange cross-talk in dense quantum dot arrays

Kavli Affiliate: Menno Veldhorst | First 5 Authors: Daniel Jirovec, Daniel Jirovec, , , | Summary: Coupled spins in semiconductor quantum dots are a versatile platform for quantum computing and simulations of complex many-body phenomena. However, on the path of scale-up, cross-talk from densely packed electrodes poses a severe challenge. While cross-talk onto the dot […]


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Adiabatic Fine-Tuning of Neural Quantum States Enables Detection of Phase Transitions in Weight Space

Kavli Affiliate: Eliska Greplova | First 5 Authors: Vinicius Hernandes, Thomas Spriggs, Saqar Khaleefah, Eliska Greplova, | Summary: Neural quantum states (NQS) have emerged as a powerful tool for approximating quantum wavefunctions using deep learning. While these models achieve remarkable accuracy, understanding how they encode physical information remains an open challenge. In this work, we […]


Continue.. Adiabatic Fine-Tuning of Neural Quantum States Enables Detection of Phase Transitions in Weight Space

Adiabatic Fine-Tuning of Neural Quantum States Enables Detection of Phase Transitions in Weight Space

Kavli Affiliate: Eliska Greplova | First 5 Authors: Vinicius Hernandes, Thomas Spriggs, Saqar Khaleefah, Eliska Greplova, | Summary: Neural quantum states (NQS) have emerged as a powerful tool for approximating quantum wavefunctions using deep learning. While these models achieve remarkable accuracy, understanding how they encode physical information remains an open challenge. In this work, we […]


Continue.. Adiabatic Fine-Tuning of Neural Quantum States Enables Detection of Phase Transitions in Weight Space

Two-qubit logic and teleportation with mobile spin qubits in silicon

Kavli Affiliate: Giordano Scappucci | First 5 Authors: Yuta Matsumoto, Maxim De Smet, Larysa Tryputen, Sander L. de Snoo, Sergey V. Amitonov | Summary: The scalability and power of quantum computing architectures depend critically on high-fidelity operations and robust and flexible qubit connectivity. In this respect, mobile qubits are particularly attractive as they enable dynamic […]


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A Modular Quantum Network Architecture for Integrating Network Scheduling with Local Program Execution

Kavli Affiliate: Stephanie Wehner | First 5 Authors: Thomas R. Beauchamp, Hana Jirovská, Scarlett Gauthier, Stephanie Wehner, | Summary: We propose an architecture for scheduling network operations enabling the end-to-end generation of entanglement according to user demand. The main challenge solved by this architecture is to allow for the integration of a network schedule with […]


Continue.. A Modular Quantum Network Architecture for Integrating Network Scheduling with Local Program Execution

Unified evolutionary optimization for high-fidelity spin qubit operations

Kavli Affiliate: Giordano Scappucci | First 5 Authors: Sam R. Katiraee-Far, Yuta Matsumoto, Brennan Undseth, Maxim De Smet, Valentina Gualtieri | Summary: Developing optimal strategies to calibrate quantum processors for high-fidelity operation is one of the outstanding challenges in quantum computing today. Here, we demonstrate multiple examples of high-fidelity operations achieved using a unified global […]


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Deconfined quantum criticality in a frustrated Haldane chain with single-ion anisotropy

Kavli Affiliate: Natalia Chepiga | First 5 Authors: Niels T. Pronk, Bowy M. La Rivière, Natalia Chepiga, , | Summary: We report a phase diagram of the antiferromagnetic spin-1 chain with nearest-neighbor Heisenberg and three-site interactions in the presence of single-ion anisotropy. We show that the Gaussian and Ising transitions that separate the topological Haldane […]


Continue.. Deconfined quantum criticality in a frustrated Haldane chain with single-ion anisotropy

Deconfined quantum criticality in a frustrated Haldane chain with single-ion anisotropy

Kavli Affiliate: Natalia Chepiga | First 5 Authors: Niels T. Pronk, Bowy M. La Rivière, Natalia Chepiga, , | Summary: We report a phase diagram of the antiferromagnetic spin-1 chain with nearest-neighbor Heisenberg and three-site interactions in the presence of single-ion anisotropy. We show that the Gaussian and Ising transitions that separate the topological Haldane […]


Continue.. Deconfined quantum criticality in a frustrated Haldane chain with single-ion anisotropy

Step-by-step design guide of a cryogenic three-axis vector magnet

Kavli Affiliate: Simon Groblacher | First 5 Authors: Gaia Da Prato, Yong Yu, Ronald Bode, Simon Gröblacher, | Summary: A tunable magnetic field at low temperatures is essential for numerous applications, including spintronics, magnetic resonance imaging, and condensed matter physics. While commercial superconducting vector magnets are available, they are complex, expensive, and often not adaptable […]


Continue.. Step-by-step design guide of a cryogenic three-axis vector magnet

Step-by-step design guide of a cryogenic three-axis vector magnet

Kavli Affiliate: Simon Groblacher | First 5 Authors: , , , , | Summary: A tunable magnetic field at low temperatures is essential for numerous applications, including spintronics, magnetic resonance imaging, and condensed matter physics. While commercial superconducting vector magnets are available, they are complex, expensive, and often not adaptable to specific experimental needs. As […]


Continue.. Step-by-step design guide of a cryogenic three-axis vector magnet