Reinforcement learning of rare diffusive dynamics

Kavli Affiliate: David T. Limmer | First 5 Authors: Avishek Das, Dominic C. Rose, Juan P. Garrahan, David T. Limmer, | Summary: We present a method to probe rare molecular dynamics trajectories directly using reinforcement learning. We consider trajectories that are conditioned to transition between regions of configuration space in finite time, like those relevant […]


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Continuous measurement of a qudit using dispersively coupled radiation

Kavli Affiliate: Irfan Siddiqi | First 5 Authors: John Steinmetz, Debmalya Das, Irfan Siddiqi, Andrew N. Jordan, | Summary: We analyze the continuous monitoring of a qudit coupled to a cavity using both phase-preserving and phase-sensitive amplification. The quantum trajectories of the system are described by a stochastic master equation, for which we derive the […]


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Quasicrystal kirigami

Kavli Affiliate: L. Mahadevan | First 5 Authors: Lucy Liu, Gary P. T. Choi, L. Mahadevan, , | Summary: Kirigami, the art of introducing cuts in thin sheets to enable articulation and deployment, has become an inspiration for a novel class of mechanical metamaterials with unusual properties. Here we complement the use of periodic tiling […]


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Spatiotemporal Crossover between Low- and High-Temperature Dynamical Regimes in the Quantum Heisenberg Magnet

Kavli Affiliate: Joel E. Moore | First 5 Authors: Maxime Dupont, Nicholas E. Sherman, Joel E. Moore, , | Summary: The stranglehold of low temperatures on fascinating quantum phenomena in one-dimensional quantum magnets has been challenged recently by the discovery of anomalous spin transport at high temperatures. Whereas both regimes have been investigated separately, no […]


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Multiplet supercurrent in Josephson tunneling circuits

Kavli Affiliate: Anton R. Akhmerov | First 5 Authors: André Melo, Valla Fatemi, Anton R. Akhmerov, , | Summary: The multi-terminal Josephson effect allows DC supercurrent to flow at finite commensurate voltages. Existing proposals to realize this effect rely on nonlocal Andreev processes in superconductor-normal-superconductor junctions. However, this approach requires precise control over microscopic states […]


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NTIRE 2021 Challenge on Quality Enhancement of Compressed Video: Methods and Results

Kavli Affiliate: Wei Gao | First 5 Authors: Ren Yang, Radu Timofte, Jing Liu, Yi Xu, Xinjian Zhang | Summary: This paper reviews the first NTIRE challenge on quality enhancement of compressed video, with a focus on the proposed methods and results. In this challenge, the new Large-scale Diverse Video (LDV) dataset is employed. The […]


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Chiral Anomaly Trapped in Weyl Metals: Nonequilibrium Valley Polarization at Zero Magnetic Field

Kavli Affiliate: Anton R. Akhmerov | First 5 Authors: Pablo M. Perez-Piskunow, Nicandro Bovenzi, Anton R. Akhmerov, Maxim Breitkreiz, | Summary: In Weyl semimetals the application of parallel electric and magnetic fields leads to valley polarization — an occupation disbalance of valleys of opposite chirality — a direct consequence of the chiral anomaly. In this […]


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Distinct chemistries explain decoupling of slip and wettability in atomically smooth aqueous interfaces

Kavli Affiliate: David T. Limmer | First 5 Authors: Anthony R. Poggioli, David T. Limmer, , , | Summary: Despite essentially identical crystallography and equilibrium structuring of water, nanoscopic channels composed of hexagonal boron nitride and graphite exhibit an order-of-magnitude difference in fluid slip. We investigate this difference using molecular dynamics simulations, demonstrating that its […]


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Nanomechanical probing and strain tuning of the Curie temperature in suspended Cr$_2$Ge$_2$Te$_6$ heterostructures

Kavli Affiliate: Herre S. J. Van Der Zant | First 5 Authors: Makars Šiškins, Samer Kurdi, Martin Lee, Benjamin J. M. Slotboom, Wenyu Xing | Summary: Two-dimensional (2D) magnetic materials with strong magnetostriction are interesting systems for strain-tuning the magnetization, enabling potential for realizing spintronic and nanomagnetic devices. Realizing this potential requires understanding of the […]


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