Ankit Sharma

Chandigarh University

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Frank Smyth

Dublin City University

Prince M. Anandarajah

Dublin City University

Aleksandra Kaszubowska‐Anandarajah

Trinity College Dublin

Michael B. Wallace

Jacksonville College

Jules Braddell

Pilot Photonics (Ireland)

Amit Vajpayee

Parul University

Gaurav Jain

Pilot Photonics (Ireland)

Manisha J. Nene

Defence Institute of Advanced Technology

P. Kaur

Chandigarh University

Liam P. Barry

Dublin City University

Cooperative Institutions

Dublin City University

Indian Institute of Technology Kanpur

Lovely Professional University

Trinity College Dublin

Chandigarh University

Universidade de Vigo

University at Buffalo, State University of New York

Pilot Photonics (Ireland)

University College Dublin

Microsoft (United States)

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Privacy and Security issues in Cloud Computing

Journal of Global Research in Computer Sciences (2013)

Ankit Sharma Shashank Gupta Deep Mann

Cloud computing is one of the most widely used and acceptable technique. Because of this it came into attention of various groups of people, so the security and maintenance of cloud is major issue. In this paper we have point out some of the major issues effecting the security and reliability of the cloud.

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Quantum Information Transmission Using CNOT Gate

Advances in parallel computing (2021)

Ankit Sharma Manisha J. Nene

We are at the dawn of quantum era; research efforts are been made on quantum information transmission techniques. Properties of quantum mechanics poses unique challenges in terms of wave collapse function, No cloning theorem and reversible operations. Quantum teleportation and quantum entanglement swapping based architecture are utilized to transmit qubit. In this paper we propose an approach to transmit qubits using controlled NOT gate (CNOT) gates and implement it on quantum machine.

Controlled NOT gate

Quantum teleportation

10.3233/apc210219

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On the Approximation of Submodular Functions

arXiv (Cornell University) (2013)

Nikhil R. Devanur Shaddin Dughmi Roy Schwartz Ankit Sharma Mohit Singh

Submodular functions are a fundamental object of study in combinatorial optimization, economics, machine learning, etc. and exhibit a rich combinatorial structure. Many subclasses of submodular functions have also been well studied and these subclasses widely vary in their complexity. Our motivation is to understand the relative complexity of these classes of functions. Towards this, we consider the question of how well can one class of submodular functions be approximated by another (simpler) class of submodular functions. Such approximations naturally allow algorithms designed for the simpler class to be applied to the bigger class of functions. We prove both upper and lower bounds on such approximations. Our main results are: 1. General submodular functions can be approximated by cut functions of directed graphs to a factor of $n^2/4$, which is tight. 2. General symmetric submodular functions$^{1}$ can be approximated by cut functions of undirected graphs to a factor of $n-1$, which is tight up to a constant. 3. Budgeted additive functions can be approximated by coverage functions to a factor of $e/(e-1)$, which is tight. Here $n$ is the size of the ground set on which the submodular function is defined. We also observe that prior works imply that monotone submodular functions can be approximated by coverage functions with a factor between $O(\sqrt{n} \log n)$ and $\Omega(n^{1/3} /\log^2 n) $.

Submodular set function

Set function

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QMCDS: Quantum Memory for Cloud Data Storage

Advances in intelligent systems and computing (2021)

Ankit Sharma Indra Kumar Sahu Manisha J. Nene

Cloud storage

10.1007/978-981-16-5157-1_6

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(Invited) Electron Transport in Bulk and 2DEGs in beta-Ga2O3 and kV Class Laterals Device in beta-Ga2O3

Meeting abstracts/Meeting abstracts (Electrochemical Society. CD-ROM) (2020)

Krishnendu Ghosh Ke Zhang Abhishek Vaidya Ankit Sharma Avinash Kumar

Monoclinic beta-Ga 2 O 3 and (Al x Ga 1-x ) 2 O 3 alloys are an emerging ultra-widebandgap semiconductor system for next generation power, GHz power switching and RF applications. In this talk, we will present the low field and high field transport simulations in Ga2O3 using first-principles calculations. Density functional theory calculations is used to get the band structure. The density functional perturbation theory is used to understand the lattice dynamics and identify the infrared (IR) active and Raman active phonon modes. Electron-phonon scattering rates are calculated Boltzmann transport equation is solved to calculate the low field mobility, velocity-field profiles and the impact ionization coefficients. The effect of dynamic screening on the electron mobility is evaluated in a two-dimensional electron gas (2-DEG) system in (AlxGa1-x)2O3/Ga2O3 heterostructures. We will also report the Ga2O3 based power and RF devices. MOSFETs with spin-doping source/drain and n+ ohmic capped layers will be presented. kV breakdown voltages are seen with the devices limited by extrinsic breakdown. Temperature dependent characteristics show potential for high temperature applications.

Electron Mobility

Ohmic contact

10.1149/ma2020-01231336mtgabs

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Wavelength Tunable Directly Modulated Laser for TWDM Applications

Ankit Sharma Aleksandra Kaszubowska‐Anandarajah Michael B. Wallace Gaurav Jain Frank Smyth

A PIC transmitter for application in TWDM passive optical networks is demonstrated. The device generates four 100 GHz-spaced channels and features an integrated section for chirp control that enables error-free transmission of 10 Gb/s OOK data over 50 km of fiber.

Chirp

Optical cross-connect

10.1109/ecoc52684.2021.9606065

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Qubit Transmission Techniques

2021 International Conference on Intelligent Technologies (CONIT) (2021)

Ankit Sharma Manisha J. Nene

Quantum technology has advanced and has found its application in various fields. Research efforts are been made in realization of quantum networks which would enable transmission of quantum information in terms of qubits. Qubit transmission has unique challenges due to quantum properties. This study proposes to use CNOT gates for qubit transmission, and also based on the discussion and experiments conducted in the study a comparison between quantum teleportation, quantum entanglement swapping and CNOT gates is made for qubit transmission in a quantum network.

Controlled NOT gate

Quantum teleportation

Teleportation

Superdense coding

10.1109/conit51480.2021.9498406

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Conformal nonlinear fluid dynamics from gravity in arbitrary dimensions

Journal of High Energy Physics (2008)

Sayantani Bhattacharyya R. Loganayagam Ipsita Mandal Shiraz Minwalla Ankit Sharma

Cosmological constant

Perfect fluid

10.1088/1126-6708/2008/12/116

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Citations (210)

Design of a low threshold single-mode In-P laser using regrowth-free fabrication

IEEE photonics journal (2024)

Ankit Sharma Pascal Landais Manas Srivastava Michael B. Wallace Frank Smyth

We describe the design procedure, optimization, and fabrication cycle of an index-pattern FP laser on an InP platform. The design parameters of the ridge and reflector (based on slots) are extracted through simulations. In addition, the performance of reflectors with varying slot widths is analyzed. Subsequently, the extracted parameters are used in a rate equation model to predict the performance of the laser in terms of its L-I characteristics and the sidemode suppression ratio (SMSR). Moreover, the simulated results are compared with the experimental characterization of lasers fabricated with estimated design parameters revealing that the index-pattern laser with 0.3 μ slot width delivers the best performance by demonstrating a threshold current of ∼30 mA and SMSR > 30 dB.

Mode (computer interface)

10.1109/jphot.2024.3389613

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Advanced Border Security System

International journal of advance research and innovative ideas in education (2018)

Abhishek Kumar Ankit Rajput Ankit Sharma Hemant Bhardwaj Yogendra Pandey

— This paper displays a plan to secure the fringe in a straightforward and more solid way, The proposed thought has a basic outline and has a high range, it covers an expansive outskirt territory securing the fringe zone from unlawful sections, pirating, illicit development of weapon absent much inclusion of security powers close outskirt. In the wake of dissecting the past assault in our nation and the quantity of mishaps happening every year, it is obvious that in the majority of the cases the security constrain are unconscious of the section of these fear based oppressor subsequently with a specific end goal to shield our country from such assaults and psychological militant action there is a need to actualize a security framework which will be sufficiently shrewd to recognize these action and give legitimate data about every last action occurring close to the outskirt.

Expansive

Action plan

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