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

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)

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)

Entropy as a Design Principle in the Photosystem II Supercomplex

Kavli Affiliate: Graham R. Fleming | First 5 Authors: Johanna L. Hall, Shiun-Jr Yang, David T. Limmer, Graham R. Fleming, | Summary: Photosystem II (PSII) can achieve near-unity quantum efficiency of light harvesting in ideal conditions and can dissipate excess light energy as heat to prevent formation of reactive oxygen species under light stress. Understanding […]


Continue.. Entropy as a Design Principle in the Photosystem II Supercomplex

Entropy as a Design Principle in the Photosystem II Supercomplex

Kavli Affiliate: David T. Limmer | First 5 Authors: Johanna L. Hall, Shiun-Jr Yang, David T. Limmer, Graham R. Fleming, | Summary: Photosystem II (PSII) can achieve near-unity quantum efficiency of light harvesting in ideal conditions and can dissipate excess light energy as heat to prevent formation of reactive oxygen species under light stress. Understanding […]


Continue.. Entropy as a Design Principle in the Photosystem II Supercomplex

Molecular tuning of excitons and polarization anisotropy in hybrid bilayer crystals

Kavli Affiliate: Jeffrey B. Neaton | First 5 Authors: Tomojit Chowdhury, Aurélie Champagne, Fauzia Mujid, Patrick Knüppel, Zehra Naqvi | Summary: Bilayer crystals, built from monolayers of two-dimensional (2D) crystals with different lattice orientations, generate interlayer potentials leading to unique excitonic properties. However, the ability to tune the interlayer potential is limited by the fixed […]


Continue.. Molecular tuning of excitons and polarization anisotropy in hybrid bilayer crystals

Towards Flexible 3D Perception: Object-Centric Occupancy Completion Augments 3D Object Detection

Kavli Affiliate: Feng Wang | First 5 Authors: Chaoda Zheng, Feng Wang, Naiyan Wang, Shuguang Cui, Zhen Li | Summary: While 3D object bounding box (bbox) representation has been widely used in autonomous driving perception, it lacks the ability to capture the precise details of an object’s intrinsic geometry. Recently, occupancy has emerged as a […]


Continue.. Towards Flexible 3D Perception: Object-Centric Occupancy Completion Augments 3D Object Detection

Joint Mode Selection and Beamforming Designs for Hybrid-RIS Assisted ISAC Systems

Kavli Affiliate: Feng Wang | First 5 Authors: Yingbin Lin, Feng Wang, Xiao Zhang, Guojun Han, Vincent K. N. Lau | Summary: This paper considers a hybrid reconfigurable intelligent surface (RIS) assisted integrated sensing and communication (ISAC) system, where each RIS element can flexibly switch between the active and passive modes. Subject to the signal-to-interference-plus-noise […]


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Exciton thermalization dynamics in monolayer MoS2: a first-principles Boltzmann equation study

Kavli Affiliate: Jeffrey B. Neaton | First 5 Authors: Yang-hao Chan, Jonah B. Haber, Mit H. Naik, Steven G. Louie, Jeffrey B. Neaton | Summary: Understanding exciton thermalization is critical for optimizing optoelectronic and photocatalytic processes in many materials. However, it is hard to access the dynamics of such processes experimentally, especially on systems such […]


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Gauge-invariant projector calculus for quantum state geometry and applications to observables in crystals

Kavli Affiliate: Joel E. Moore | First 5 Authors: Johannes Mitscherling, Alexander Avdoshkin, Joel E. Moore, , | Summary: The importance of simple geometrical invariants, such as the Berry curvature and quantum metric, constructed from the Bloch states of a crystal has become well-established over four decades of research. More complex aspects of geometry emerge […]


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Machine Learned Potential for High-Throughput Phonon Calculations of Metal-Organic Frameworks

Kavli Affiliate: Kristin A. Persson | First 5 Authors: Alin Marin Elena, Prathami Divakar Kamath, Théo Jaffrelot Inizan, Andrew S. Rosen, Federica Zanca | Summary: Metal-organic frameworks (MOFs) are highly porous and versatile materials studied extensively for applications such as carbon capture and water harvesting. However, computing phonon-mediated properties in MOFs, like thermal expansion and […]


Continue.. Machine Learned Potential for High-Throughput Phonon Calculations of Metal-Organic Frameworks