S. Nibedita Swain

ORCID: 0000-0003-2326-2364
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About
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Research Areas
  • Quantum Information and Cryptography
  • Quantum Computing Algorithms and Architecture
  • Quantum Mechanics and Applications
  • Quantum and electron transport phenomena
  • Quantum Mechanics and Non-Hermitian Physics
  • Photonic and Optical Devices
  • Nonlinear Waves and Solitons
  • Quantum optics and atomic interactions
  • Cold Atom Physics and Bose-Einstein Condensates
  • Nonlinear Photonic Systems
  • Mechanical and Optical Resonators

University of Technology Sydney
2024

Quantum (Australia)
2024

The University of Queensland
2024

Centre for Quantum Computation and Communication Technology
2024

Indian Institute of Science Education and Research Kolkata
2021-2022

Veer Surendra Sai University of Technology
2019

Concurrence introduced by Hill and Wootters [Phys. Rev. Lett. 78, 5022 (1997)], provides an important measure of entanglement for a general pair qubits that is strictly positive entangled states vanishes all separable states. We present extension to continuous variable multiple degrees freedom generalizing the Lagrange's identity wedge product framework proposed Bhaskara et al. [Quantum Inf. Process. 16, 118 (2017)] pure discrete systems in arbitrary dimensions. A family faithful measures...

10.1103/physreva.105.052441 article EN Physical review. A/Physical review, A 2022-05-27

The concept of a photon added two-mode Schrödinger cat state in which both modes are independent is introduced, and their nonclassical properties entanglement studied. introduced states emerge as eigenstates <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msub> <mml:mi>f</mml:mi> <mml:mn>1</mml:mn> </mml:msub> </mml:mrow> <mml:mn>2</mml:mn> <mml:mi>a</mml:mi> </mml:math> , where <mml:mo>,</mml:mo> nonlinear functions the...

10.1364/josab.464799 article EN Journal of the Optical Society of America B 2022-09-27

The choice between the Schrödinger and Heisenberg pictures can significantly impact computational resources needed to solve a problem, even though they are equivalent formulations of quantum mechanics. Here, we present method for analysing Bosonic circuits based on picture which allows, under certain conditions, useful factoring evolution into signal noise contributions, similar way what be achieved with classical communication systems. We provide examples suggest that this approach may...

10.3390/e26100874 article EN cc-by Entropy 2024-10-18

A significant hurdle for quantum information and processing using bosonic systems are stochastic phase errors, which likely to occur as the photons propagate through a channel. We propose demonstrate scheme of passive, linear optical unitary averaging protecting Gaussian channels. The requires only elements vacuum detectors, protects against loss purity, squeezing entanglement. present numerical simulations analytical formula, tailored currently relevant parameters with low noise levels,...

10.48550/arxiv.2311.10432 preprint EN cc-by arXiv (Cornell University) 2023-01-01

The concept of photon added two-mode Schr\"odinger cat states in which both modes are independent is introduced, their non-classical properties and entanglement studied. introduced emerge as the eigenstates $f_1f_2a_1a_2$, where $f_1, f_2$ nonlinear functions number operator $a_1, a_2$ annihilation operators. We study evolution these under canonical transformation using parity for case standard coherent harmonic oscillator. evaluated especially by considering sub-Poissonian statistics...

10.48550/arxiv.2202.00518 preprint EN cc-by arXiv (Cornell University) 2022-01-01
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