30 citations · 209 across the 21 of their papers we have counts for
21 papers
First-principles calculations of electrical conductivities of edge-modified graphene nanoribbons: strain effect
Sanjay Prabhakar, Roderick Melnik
We investigate the influence of strain on the electrical properties of graphene nanoribbons that have potential applications in making sensors and other optoelectronic devices. In…
New Source of Spin-hot spot in displaced silicon double quantum dots
Sanjay Prabhakar
Controlling electron spins in double quantum dots allows individual electrons to be trapped and manipulated for next-generation solid-state qubit devices. In this paper, the study…
Heavy-hole spin relaxation in quantum dots: Isotropic versus anisotropic effects
Dalton Forbes, Sanjay Prabhakar, Ruma De +2
Non-charge based logic in single-hole spin of semiconductor quantum dots (QDs) can be controlled by anisotropic gate potentials providing a notion for making next generation solid-…
Influence of Random Telegraph Noise on Quantum Bit Gate Operation
Jackson Likens, Sanjay Prabhakar, Ratan Lal +1
We consider the problem of analyzing spin-flip qubit gate operation in presence of Random Telegraph Noise (RTN). Our broad approach is the following. We calculate the spin-flip pro…
Error analysis of bit-flip qubits under random telegraph noise for low and high temperature measurement application
Win Wang, Sanjay Prabhakar
Achieving small error for qubit gate operations under random telegraph noise (RTN) is of great interest for potential applications in quantum computing and quantum error correction…
Band engineering and elastic properties of strained armchair graphene nanoribbons: semiconductor vs metallic characteristics
Sanjay Prabhakar, Roderick Melnik
An odd number of zigzag edges in armchair graphene nanoribbons and their mechanical properties (e.g., Young's modulus, Poisson ratio and shear modulus) have potential interest for…
Valley-dependent Lorentz force and Aharonov-Bohm phase in strained graphene p-n junction
Sanjay Prabhakar, Rabindra Nepal, Roderick Melnik +1
Veselago lens focusing in graphene p-n junction is promising for realizations of new generation electron optics devices. However, the effect of the strain-induced Aharonov-Bohm int…
Numerical and analytical bounds on threshold error rates for hypergraph-product codes
Alexey A. Kovalev, Sanjay Prabhakar, Ilya Dumer +1
We study analytically and numerically decoding properties of finite rate hypergraph-product quantum LDPC codes obtained from random (3,4)-regular Gallager codes, with a simple mode…
Spin relaxation in strained graphene nanoribbons: armchair vs zigzag edges
Sanjay Prabhakar, Roderick Melnik, Shyam Badu
We study the influence of ripple waves originating from the electromechanical effects on spin relaxation caused by electromagnetic fields in armchair and zigzag graphene nanoribbon…
Geometric spin manipulation in semiconductor quantum dots
Sanjay Prabhakar, Roderick Melnik, Akira Inomata
We propose a method to flip the spin completely by an adiabatic transport of quantum dots. We show that it is possible to flip the spin by inducing a geometric phase on the spin st…
Thermo-electromechanical effects in relaxed shape graphene and bandstructures of graphene quantum dots
Sanjay Prabhakar, Roderick Melnik, Luis L. Bonilla +1
We investigate the in-plane oscillations of the relaxed shape graphene due to externally applied tensile edge stress along both the armchair and zigzag directions. We show that the…
Coupled multiphysics, barrier localization, and critical radius effects in embedded nanowire superlattices
Sanjay Prabhakar, Roderick Melnik, Luis L. Bonilla
The new contribution of this paper is to develop a cylindrical representation of an already known multiphysics model for embedded nanowire superlattices (NWSLs) of wurtzite structu…
Spin echo dynamics under an applied drift field in graphene nanoribbon superlattices
Sanjay Prabhakar, Roderick Melnik, Luis L Bonilla +1
We investigate the evolution of spin dynamics in graphene nanoribbon superlattices (GNSLs) with armchair and zigzag edges in the presence of a drift field. We determine the exact e…
Electrical control of phonon mediated spin relaxation rate in semiconductor quantum dots: the Rashba vs the Dresselhaus spin-orbit couplings
Sanjay Prabhakar, Roderick Melnik, Luis L. Bonilla
In symmetric quantum dots (QDs), it is well known that the spin-hot spot (i.e., the cusp-like structure due to the presence of degeneracy near the level or anticrossing point) is p…
Gate control of Berry phase in III-V semiconductor quantum dots
Sanjay Prabhakar, Roderick Melnik, Luis L Bonilla
Berry phase in semiconductor quantum dots (QDs) can be induced by moving the dots adiabatically in a closed loop with the application of the distortion potential in the lateral dir…
Spin transition rates in nanowire superlattices: Rashba spin-orbit coupling effects
Sanjay Prabhakar, Roderick Melnik, Luis L. Bonilla
We investigate the influence of Rashba spin-orbit coupling in a parabolic nanowire modulated by longitudinal periodic potential. The modulation potential can be obtained from reali…
Anisotropic effects and phonon induced spin relaxation in gate-controlled semiconductor quantum dots
Sanjay Prabhakar, Shohini Ghose, Roderick Melnik +1
In this paper, a detailed analysis of anisotropic effects on the phonon induced spin relaxation rate in III-V semiconductor quantum dots (QDs) is carried out. We show that the acci…
The influence of anisotropic gate potentials on the phonon induced spin-flip rate in GaAs quantum dots
Sanjay Prabhakar, Roderick V. N. Melnik, Luis L. Bonilla
We study the anisotropic orbital effect in the electric field tunability of the phonon induced spin-flip rate in quantum dots (QDs). Our study shows that anisotropic gate potential…
Manipulation of single electron spin in a GaAs quantum dot through the application of geometric phases: The Feynman disentangling technique
Sanjay Prabhakar, James Raynolds, Akira Inomata +1
The spin of a single electron in an electrically defined quantum dot in a 2DEG can be manipulated by moving the quantum dot adiabatically in a closed loop in the 2D plane under the…
Manipulation of the Land g-factor in InAs quantum dots through the application of anisotropic gate potentials: Exact diagonalization, numerical and perturbation methods
Sanjay Prabhakar, James E Raynolds, Roderick Melnik
We study the variation in the Land g-factor of electron spins induced by both anisotropic gate potentials and magnetic fields in InAs quantum dots for possible im…
Gate control of a quantum dot single-electron spin in realistic confining potentials: anisotropy effects
Sanjay Prabhakar, James E. Raynolds
Among recent proposals for next-generation, non-charge-based logic is the notion that a single electron can be trapped and its spin can be manipulated through the application of ga…