Rajib Rahman
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View article: Extensive Synovial Osteochondromatosis Secondary to Avascular Necrosis of the Femoral Head: A Case of Multifocal Extra-articular Involvement
Extensive Synovial Osteochondromatosis Secondary to Avascular Necrosis of the Femoral Head: A Case of Multifocal Extra-articular Involvement Open
Synovial osteochondromatosis (SOC) is an uncommon benign disorder of synovial metaplasia, characterized by cartilaginous or osseous loose bodies within the joint, bursa, or tendon sheath. We report a case of a 40-year-old female who presen…
View article: A review of gas sensors based on nanotubes and conducting polymers: Hybrid approaches
A review of gas sensors based on nanotubes and conducting polymers: Hybrid approaches Open
View article: High-fidelity sub-microsecond single-shot electron spin readout above 3.5 K
High-fidelity sub-microsecond single-shot electron spin readout above 3.5 K Open
View article: Effect of disorder and strain on the operation of planar Ge hole spin qubits
Effect of disorder and strain on the operation of planar Ge hole spin qubits Open
Germanium quantum dots in strained $\text{Ge}/\text{Si}_{1-x}\text{Ge}_{x}$ heterostructures exhibit fast and coherent hole qubit control in experiments. In this work, we theoretically and numerically address the effects of random alloy di…
View article: Exploiting universal nonlocal dispersion in optically active materials for spectro-polarimetric computational imaging
Exploiting universal nonlocal dispersion in optically active materials for spectro-polarimetric computational imaging Open
View article: Spin-Hall effect in topological materials: evaluating the proper spin current in systems with arbitrary degeneracies
Spin-Hall effect in topological materials: evaluating the proper spin current in systems with arbitrary degeneracies Open
The spin-Hall effect underpins some of the most active topics in modern physics, including spin torques and the inverse spin-Hall effect, yet it lacks a proper theoretical description. This makes it difficult to differentiate the SHE from …
View article: Measurement of Enhanced Spin‐Orbit Coupling Strength for Donor‐Bound Electron Spins in Silicon
Measurement of Enhanced Spin‐Orbit Coupling Strength for Donor‐Bound Electron Spins in Silicon Open
While traditionally considered a deleterious effect in quantum dot spin qubits, the spin‐orbit interaction is recently being revisited as it allows for rapid coherent control by on‐chip AC electric fields. For electrons in bulk silicon, sp…
View article: Bounds to electron spin qubit variability for scalable CMOS architectures
Bounds to electron spin qubit variability for scalable CMOS architectures Open
Spins of electrons in silicon MOS quantum dots combine exquisite quantum properties and scalable fabrication. In the age of quantum technology, however, the metrics that crowned Si/SiO 2 as the microelectronics standard need to be reassess…
View article: Bounds to electron spin qubit variability for scalable CMOS architectures
Bounds to electron spin qubit variability for scalable CMOS architectures Open
Spins of electrons in CMOS quantum dots combine exquisite quantum properties and scalable fabrication. In the age of quantum technology, however, the metrics that crowned Si/SiO2 as the microelectronics standard need to be reassessed with …
View article: Spin-Hall effect in topological materials: Evaluating the proper spin current in systems with arbitrary degeneracies
Spin-Hall effect in topological materials: Evaluating the proper spin current in systems with arbitrary degeneracies Open
The spin-Hall effect underpins some of the most active topics in modern physics, including spin torques and the inverse spin-Hall effect, yet it lacks a proper theoretical description. This makes it difficult to differentiate the SHE from …
View article: Noise Correlations in a 1D Silicon Spin Qubit Array
Noise Correlations in a 1D Silicon Spin Qubit Array Open
Correlated noise across multi-qubit architectures is known to be highly detrimental to the operation of error correcting codes and the long-term feasibility of quantum processors. The recent discovery of spatially dependent correlated nois…
View article: Measurement of enhanced spin-orbit coupling strength for donor-bound electron spins in silicon
Measurement of enhanced spin-orbit coupling strength for donor-bound electron spins in silicon Open
While traditionally considered a deleterious effect in quantum dot spin qubits, the spin-orbit interaction is recently being revisited as it allows for rapid coherent control by on-chip AC electric fields. For electrons in bulk silicon, SO…
View article: La Silla-QUEST RR Lyrae star survey II: the Crater II tidal streams
La Silla-QUEST RR Lyrae star survey II: the Crater II tidal streams Open
We describe photometry improvements in the La Silla-Quest RR Lyrae star (RRLS) survey that enable it to reach distances from the Sun (d⊙) ∼140 kpc. We report the results of surveying ∼300 deg2 of sky around the large, low-surface-brightnes…
View article: Symmetry Breaking and Spin–Orbit Coupling for Individual Vacancy-Induced In-Gap States in MoS<sub>2</sub> Monolayers
Symmetry Breaking and Spin–Orbit Coupling for Individual Vacancy-Induced In-Gap States in MoS<sub>2</sub> Monolayers Open
Spins confined to point defects in atomically thin semiconductors constitute well-defined atomic-scale quantum systems that are being explored as single-photon emitters and spin qubits. Here, we investigate the in-gap electronic structure …
View article: High-fidelity initialization and control of electron and nuclear spins in a four-qubit register
High-fidelity initialization and control of electron and nuclear spins in a four-qubit register Open
View article: Superexchange coupling of donor qubits in silicon
Superexchange coupling of donor qubits in silicon Open
Atomic engineering in a solid-state material has the potential to functionalize the host with novel phenomena. STM-based lithographic techniques have enabled the placement of individual phosphorus atoms at selective lattice sites of silico…
View article: Impact of measurement backaction on nuclear spin qubits in silicon
Impact of measurement backaction on nuclear spin qubits in silicon Open
Phosphorus donor nuclear spins in silicon couple weakly to the environment making them promising candidates for high-fidelity qubits. The state of a donor nuclear spin qubit can be manipulated and read out using its hyperfine interaction w…
View article: Practical strategies for enhancing the valley splitting in Si/SiGe quantum wells
Practical strategies for enhancing the valley splitting in Si/SiGe quantum wells Open
Silicon/silicon-germanium heterostructures have many important advantages for hosting spin qubits. However, controlling the valley splitting (the energy splitting between the two low-lying conduction-band valleys) remains a critical challe…
View article: Impact of electrostatic crosstalk on spin qubits in dense CMOS quantum dot arrays
Impact of electrostatic crosstalk on spin qubits in dense CMOS quantum dot arrays Open
Quantum processors based on integrated nanoscale silicon spin qubits are a promising platform for highly scalable quantum computation. Current CMOS spin qubit processors consist of dense gate arrays to define the quantum dots, making them …
View article: Superexchange coupling of donor qubits in silicon
Superexchange coupling of donor qubits in silicon Open
Atomic engineering in a solid-state material has the potential to functionalize the host with novel phenomena. STM-based lithographic techniques have enabled the placement of individual phosphorus atoms at selective lattice sites of silico…
View article: Efficient and stable piezo-photocatalytic splitting of water and seawater by interfacial engineering of Na0.5Bi0.5TiO3/Na0.5Bi4.5Ti4O15 self-generated heterojunctions
Efficient and stable piezo-photocatalytic splitting of water and seawater by interfacial engineering of Na0.5Bi0.5TiO3/Na0.5Bi4.5Ti4O15 self-generated heterojunctions Open
Seawater splitting by piezocatalysis and piezo-photocatalysis recently has been developed as a strategy for efficient energy conversion from mechanical energy and/or renewable solar energy. However, the piezocatalytic hydrogen evolution re…
View article: Bounds to electron spin qubit variability for scalable CMOSarchitectures
Bounds to electron spin qubit variability for scalable CMOSarchitectures Open
Spins of electrons in CMOS quantum dots combine exquisite quantum properties and scalable fabrication. In the age of quantum technology, however, the metrics that crowned Si/SiO$_2$ as the microelectronics standard need to be reassessed wi…
View article: Spin-Valley Locking for In-Gap Quantum Dots in a MoS<sub>2</sub> Transistor
Spin-Valley Locking for In-Gap Quantum Dots in a MoS<sub>2</sub> Transistor Open
Spins confined to atomically thin semiconductors are being actively explored as quantum information carriers. In transition metal dichalcogenides (TMDCs), the hexagonal crystal lattice gives rise to an additional valley degree of freedom w…
View article: Spin-valley locking for in-gap quantum dots in a MoS2 transistor
Spin-valley locking for in-gap quantum dots in a MoS2 transistor Open
Spins confined to atomically-thin semiconductors are being actively explored as quantum information carriers. In transition metal dichalcogenides (TMDCs), the hexagonal crystal lattice gives rise to an additional valley degree of freedom w…
View article: First-Principles Study of Large Gyrotropy in MnBi for Infrared Thermal Photonics
First-Principles Study of Large Gyrotropy in MnBi for Infrared Thermal Photonics Open
Nonreciprocal gyrotropic materials have attracted significant interest recently in material physics, nanophotonics, and topological physics. Most of the well-known nonreciprocal materials, however, only show nonreciprocity under a strong e…
View article: Hyperfine-mediated spin relaxation in donor-atom qubits in silicon
Hyperfine-mediated spin relaxation in donor-atom qubits in silicon Open
Donor electron spin qubits hosted within nanoscale devices have demonstrated seconds-long relaxation times at magnetic fields suitable for the operation of spin qubits in silicon of B=1.5T. The relaxation rates of these qubits have been sh…
View article: Multi‐Scale Modeling of Tunneling in Nanoscale Atomically Precise Si:P Tunnel Junctions
Multi‐Scale Modeling of Tunneling in Nanoscale Atomically Precise Si:P Tunnel Junctions Open
Controlling electron tunneling is of fundamental importance in the design and operation of semiconductor nanostructures such as field effect transistors (FETs) and quantum computing device architectures. The exponential sensitivity of tunn…
View article: Practical Strategies for Enhancing the Valley Splitting in Si/SiGe Quantum Wells
Practical Strategies for Enhancing the Valley Splitting in Si/SiGe Quantum Wells Open
Silicon/silicon-germanium heterostructures have many important advantages for hosting spin qubits. However, controlling the valley splitting (the energy splitting between the two low-lying conduction-band valleys) remains a critical challe…
View article: The Use of Exchange Coupled Atom Qubits as Atomic‐Scale Magnetic Field Sensors (Adv. Mater. 6/2023)
The Use of Exchange Coupled Atom Qubits as Atomic‐Scale Magnetic Field Sensors (Adv. Mater. 6/2023) Open
Inter-Qubit Coupling Due to their atomic nature, qubits based on electrons bound to phosphorus-doped silicon quantum dots have demonstrated strong inter-qubit coupling. In article number 2201625, Ludwik Kranz, Michelle Y. Simmons, and co-w…
View article: Semiconductor adiabatic qubits
Semiconductor adiabatic qubits Open
A quantum computing device that includes a plurality of semiconductor adiabatic qubits is described herein. The qubits are programmed with local biases and coupling terms between qubits that represent a problem of interest. The qubits are …