63 citations · 119 across the 9 of their papers we have counts for
9 papers
Exchange-Coupled Spins for Robust High-Temperature Qubits
Aniruddha Chakraborty, Md. Fahim F. Chowdhury, Mohamad Niknam +2
We show that Heisenberg exchange interactions between the neighboring spins comprising an ensemble spin qubit (E-qubit) can act as an intrinsic error mitigator, increasing gate fid…
Microstructural Geometry Revealed by NMR Lineshape Analysis
Mohamad Niknam, Louis-S. Bouchard
We introduce a technique for extracting microstructural geometry from NMR lineshape analysis in porous materials at angstrom-scale resolution with the use of weak magnetic field gr…
Proximal quantum control of spin and spin ensemble with highly localized control field from skyrmions
Md Fahim F Chowdhury, Mohamad Niknam, Md Mahadi Rajib +2
Selective control of individual spin qubits is needed for scalable quantum computing based on spin states. Achieving high-fidelity in both single and two-qubit gates, essential com…
Nuclear Induction Lineshape: Non-Markovian Diffusion with Boundaries
Moe Niknam, Louis-S. Bouchard
The dynamics of viscoelastic fluids are governed by a memory function, essential yet challenging to compute, especially when diffusion faces boundary restrictions. We propose a com…
Quantum Gates Between Mesoscopic Spin Ensembles
Mohamad Niknam, Robert N. Schwartz, Louis-S. Bouchard
Quantum algorithmics with single spins poses serious technological challenges such as precision fabrication, rapid decoherence, atomic-scale addressing and readout. To circumvent a…
Nuclear Induction Lineshape Modeling via Hybrid SDE and MD Approach
Mohamad Niknam, Louis-S. Bouchard
The temperature dependence of the nuclear free induction decay in the presence of a magnetic-field gradient was found to exhibit motional narrowing in gases upon heating, a behavio…
Quantum Control of Spin Qubits Using Nanomagnets
Mohamad Niknam, Md Fahim F. Chowdhury, Md Mahadi Rajib +5
Single-qubit gates are essential components of a universal quantum computer. Without selective addressing of individual qubits, scalable implementation of quantum algorithms is not…
Experimental Detection of the Correlation Rényi Entropy in the Central Spin Model
Mohamad Niknam, Lea F. Santos, David G. Cory
We propose and experimentally measure an entropy that quantifies the volume of correlations among qubits. The experiment is carried out on a nearly isolated quantum system composed…
Sensitivity of quantum information to environment perturbations measured with a non-local out-of-time-order correlation function
Mohamad Niknam, Lea F. Santos, David G. Cory
In a quantum system coupled with a non-Markovian environment, quantum information may flow out of or in to the system. Measuring quantum information flow and its sensitivity to per…