Aveek Dutta
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View article: Vortex Motion Induced Losses in Tantalum Resonators
Vortex Motion Induced Losses in Tantalum Resonators Open
Tantalum (Ta) based superconducting circuits have been demonstrated to enable record qubit coherence times and quality factors, motivating a careful study of the microscopic origin of the remaining losses that limit their performance. We h…
View article: Disentangling Losses in Tantalum Superconducting Circuits
Disentangling Losses in Tantalum Superconducting Circuits Open
Superconducting qubits are a leading system for realizing large-scale quantum processors, but overall gate fidelities suffer from coherence times limited by microwave dielectric loss. Recently discovered tantalum-based qubits exhibit recor…
View article: Chemical Profiles of the Oxides on Tantalum in State of the Art Superconducting Circuits
Chemical Profiles of the Oxides on Tantalum in State of the Art Superconducting Circuits Open
Over the past decades, superconducting qubits have emerged as one of the leading hardware platforms for realizing a quantum processor. Consequently, researchers have made significant effort to understand the loss channels that limit the co…
View article: Disentangling Losses in Tantalum Superconducting Circuits
Disentangling Losses in Tantalum Superconducting Circuits Open
Superconducting qubits are a leading system for realizing large scale quantum processors, but overall gate fidelities suffer from coherence times limited by microwave dielectric loss. Recently discovered tantalum-based qubits exhibit recor…
View article: Chemical profiles of the oxides on tantalum in state of the art superconducting circuits
Chemical profiles of the oxides on tantalum in state of the art superconducting circuits Open
Over the past decades, superconducting qubits have emerged as one of the leading hardware platforms for realizing a quantum processor. Consequently, researchers have made significant effort to understand the loss channels that limit the co…
View article: Waveforms for xG Non-stationary Channels
Waveforms for xG Non-stationary Channels Open
Waveform design for interference cancellation in next-generation wireless systems, which includes precoding and modulation, aims to achieve orthogonality among data signals/symbols across all Degrees of Freedom (DoF). Conventional methods …
View article: Capacity Achieving by Diagonal Permutation for MU-MIMO channels
Capacity Achieving by Diagonal Permutation for MU-MIMO channels Open
Dirty Paper Coding (DPC) is considered as the optimal precoding which achieves capacity for the Gaussian Multiple-Input Multiple-Output (MIMO) broadcast channel (BC). However, to find the optimal precoding order, it needs to repeat N! time…
View article: Multidimensional Eigenwave Multiplexing Modulation for Non-Stationary Channels
Multidimensional Eigenwave Multiplexing Modulation for Non-Stationary Channels Open
While interference in time domain (caused by path difference) is mitigated by OFDM modulation, interference in frequency domain (due to velocity difference), can be mitigated by OTFS modulation. However, in non-stationary channels, the rel…
View article: Joint Spatio-Temporal Precoding for Practical Non-Stationary Wireless Channels
Joint Spatio-Temporal Precoding for Practical Non-Stationary Wireless Channels Open
The high mobility, density and multi-path evident in modern wireless systems makes the channel highly non-stationary. This causes temporal variation in the channel distribution that leads to the existence of time-varying joint interference…
View article: Collaboration with Cellular Networks for RFI Cancellation at Radio Telescope
Collaboration with Cellular Networks for RFI Cancellation at Radio Telescope Open
The growing need for electromagnetic spectrum to support the next generation (xG) communication networks increasingly generate unwanted radio frequency interference (RFI) in protected bands for radio astronomy. RFI is commonly mitigated at…
View article: Unified Characterization and Precoding for Non-Stationary Channels
Unified Characterization and Precoding for Non-Stationary Channels Open
Modern wireless channels are increasingly dense and mobile making the channel highly non-stationary. The time-varying distribution and the existence of joint interference across multiple degrees of freedom (e.g., users, antennas, frequency…
View article: Proofs and Supplementary Material: Unified Characterization and Precoding for Non-Stationary Channels
Proofs and Supplementary Material: Unified Characterization and Precoding for Non-Stationary Channels Open
This document provides the supplementary material including a comprehensive related work, the complete proofs and extended evaluation results that support the manuscript, "Unified Characterization and Precoding for Non-Stationary Channels"…
View article: Hybrid magneto photonic material structure for plasmon assisted magnetic switching
Hybrid magneto photonic material structure for plasmon assisted magnetic switching Open
We have proposed the use of surface plasmon resonances at the interface of hybrid magneto-photonic heterostructures [ Opt. Mat. Express , 7 , 4316 ( 2017 ) 10.1364/OME.7.004316 ] for all-optical control of the macroscopic spin orientation …
View article: RFEye in the Sky
RFEye in the Sky Open
We introduce RFEye, a generalized technique to locate signals independent of the waveform, using a single Unmanned Aerial Vehicle (UAV) equipped with only one omnidirectional antenna. This is achieved by acquiring signals from uncoordinate…
View article: Extraordinarily Large Permittivity Modulation in Zinc Oxide for Dynamic\n Nanophotonics
Extraordinarily Large Permittivity Modulation in Zinc Oxide for Dynamic\n Nanophotonics Open
The dielectric permittivity of a material encapsulates the essential physics\nof light-matter interaction into the material's local response to optical\nexcitation. Dynamic, photo-induced modulation of the permittivity can enable an\nunpre…
View article: Hybrid Magneto Photonic Material Structure for Plasmon Assisted Magnetic\n Switching
Hybrid Magneto Photonic Material Structure for Plasmon Assisted Magnetic\n Switching Open
We have proposed the use of surface plasmon resonances at the interface of\nhybrid magneto-photonic heterostructures [Opt. Mat. Exp., 7, 4316 (2017)] for\nall-optical control of the macroscopic spin orientation in nanostructures in fs\ntim…
View article: New material platform for superconducting transmon qubits with coherence times exceeding 0.3 milliseconds
New material platform for superconducting transmon qubits with coherence times exceeding 0.3 milliseconds Open
The superconducting transmon qubit is a leading platform for quantum computing and quantum science. Building large, useful quantum systems based on transmon qubits will require significant improvements in qubit relaxation and coherence tim…
View article: Plasmonics for Nanotechnology: Energy Harvesting and Memory Devices
Plasmonics for Nanotechnology: Energy Harvesting and Memory Devices Open
My dissertation research is in the field of plasmonics. Specifically, my focus is on the use of plasmonics for various applications such as solar energy harvesting and optically addressable magnetic memory devices. Plasmonics is the study …
View article: Broadband, High‐Speed, and Large‐Amplitude Dynamic Optical Switching with Yttrium‐Doped Cadmium Oxide
Broadband, High‐Speed, and Large‐Amplitude Dynamic Optical Switching with Yttrium‐Doped Cadmium Oxide Open
Transparent conducting oxides, such as doped indium oxide, zinc oxide, and cadmium oxide (CdO), have recently attracted attention as tailorable materials for applications in nanophotonic and plasmonic devices such as low‐loss modulators an…
View article: Plasmonic Water Splitting: Plasmon‐Enhanced Photoelectrochemical Water Splitting for Efficient Renewable Energy Storage (Adv. Mater. 31/2019)
Plasmonic Water Splitting: Plasmon‐Enhanced Photoelectrochemical Water Splitting for Efficient Renewable Energy Storage (Adv. Mater. 31/2019) Open
In article number 1805513, Alexandra Boltasseva, Radek Zbořil, Alberto Naldoni, and co-workers discuss fundamental aspects of plasmonic mechanisms and selected case studies relating to water splitting. The integration of plasmonic effects,…
View article: Roadmap on plasmonics
Roadmap on plasmonics Open
Plasmonics is a rapidly developing field at the boundary of physical optics and condensed matter physics. It studies phenomena induced by and associated with surface plasmons—elementary polar excitations bound to surfaces and interfaces of…
View article: Surface-plasmon opto-magnetic field enhancement for all-optical magnetization switching
Surface-plasmon opto-magnetic field enhancement for all-optical magnetization switching Open
The demand for faster magnetization switching speeds and lower energy consumption has driven the field of spintronics in recent years. The magnetic tunnel junction is the most developed spintronic memory device in which the magnetization o…
View article: Role of epsilon-near-zero substrates in the optical response of plasmonic antennas
Role of epsilon-near-zero substrates in the optical response of plasmonic antennas Open
Radiation patterns and the resonance wavelength of a plasmonic antenna are significantly influenced by its local environment, particularly its substrate. Here, we experimentally explore the role of dispersive substrates, such as aluminum- …
View article: New materials for Plasmonics: Designs and Applications from Flat Optics to Quantum Nanophotonics
New materials for Plasmonics: Designs and Applications from Flat Optics to Quantum Nanophotonics Open
We will review the list of alternative plasmonic materials and provide a focused discussion on transition metal nitrides for refractory plasmonics. Nanostructures made of alternative plasmonic materials and their performance will be presen…