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Attipat RajagopalOffline

    Publication

    (with A. R. Usha Devi, Sudha, and R. W. Rendell) Interplay of quantum stochastic and dynamical maps to discern markovianity, J. Qu. Info. Sci.,2, 47 , quant-ph/1201.0477, 2012

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    Publication

    (with A. K. Pati) Inconsistencies of the Adiabatic theorem and the Berry phase, quant-ph/0405129, 2004

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    Publication

    (with C. S. Pande and Sumiyoshi Abe) Nanothermodynamics: a generic approach to material properties at nanoscale, cond-mat/0403738, 2004

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    (with R. W. Rendell) Dissipative quantum theory: Implications for quantum entanglement, Physica A305, 297 , quant-ph/0106050, 2002

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    Publication

    (with R. W. Rendell and Sumiyoshi Abe) Aspects of Second Law of Thermodynamics from Quantum Statistical Mechanics to Quantum Information Theory, First International Conference on Quantum Limits to the Second Law, edited by D. P. Sheehan, AIP Conference Proceedings#643, p.47 , cond-mat/0207606, 2002

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    Presentation List

    • Attipat Rajagopal, Opening Remarks QIPA School, HRI, 2011



    • Attipat Rajagopal, Role of initial states, open system quantum dynamics, Markovian and non-Markovian avataras, HRI, 2011



    Publication List

    • ARU Devi, AK Rajagopal, AM Jayannavar, Heat exchange and fluctuation in Gaussian thermal states in the quantum realm, Journal of Statistical Mechanics: Theory and Experiment 2021 (2), 023209



    • I Reena, HS Karthik, JP Tej, AR Devi, AK Rajagopal, Entanglement detection in permutation symmetric states based on violation of local sum uncertainty relation, arXiv:2103.15731



    • S Vasudevrao, I Reena, ARU Devi, AK Rajagopal, Sum Uncertainty Relations: Uncertainty Regions for Qubits and Qutrits, International Journal of Theoretical Physics 60 (4), 1523-1538 (2021)



    • Sudha, B. N. Karthik, A. R. Usha Devi, A. K. Rajagopal, Canonical structure of A and B maps, Quanta, http://quanta.ws/ojs/index.php/quanta/article/view/165, 2021



    • Anantha S. Nayak, Sudha, A. R. Usha Devi and A. K. Rajagopal, One parameter Family of Werner-Popescu states: Bipartite Separability using Conditional Quantum Relative Tsallis Entropy, Journal of Quantum Information Science, Vol 8, 12–23 , arXiv:1712.00746, 2018



    • Anantha S. Nayak, Sudha, A. R. Usha Devi and A. K. Rajagopal, Biseparability of noisy pseudopure, W and GHZ states using conditional quantum relative Tsallis entropy, Quantum Information Processing, 16, 51(1—12), 2017



    • H.S. Karthik, A.R. Usha Devi, J. Prabhu Tej, A. K. Rajagopal, Sudha and A. Narayanan, N-term pairwise-correlation inequalities, steering, and joint measurability , Physical Review A, 95, 052105 , 2017



    • Anantha S. Nayak, Sudha, A. K. Rajagopal and A.R. Usha Devi, Bipartite separability of symmetric N-qubit noisy states using conditional quantum relative Tsallis entropy, Physica A, 443, 286–295 , 2016



    • H. S. Karthik, A. R. Usha Devi, A. K. Rajagopal, Unsharp measurements and joint measurability, Current Science, (SPECIAL SECTION: QUANTUM MEASUREMENTS), 109, NO. 11, 10, arXiv:1505.04246, 2015



    • H. S. Karthik, J. Prabhu Tej, A. R. Usha Devi and A. K. Rajagopal, Joint measurability and temporal steering, J. Opt. Soc. Am. B, 32, A34-A38, arXiv:1412.0871, 2015



    • A.K. Rajagopal, Sudha, Anantha S Nayak, A.R. Usha Devi, From the sandwiched quantum relative Tsallis entropy to its conditional form: Separability criterion beyond local and global spectra, Phys. Rev. A, 89, 012331, arXiv:1309.6944, 2014



    • J. Prabhu Tej, H.S. Karthik, A.R. Usha Devi, Sudha and A.K. Rajagopal, Quantum which-way information and fringe visibility when the detector is entangled with an ancilla , Physical Review A, 89, 062116, 2014



    • A.R. Usha Devi, A. K. Rajagopal, Sudha, H. S. Karthik and J. Prabhu Tej, Equivalence of classicality and separability based on P phase–space representation of symmetric multiqubit states , Quantum Information Processing, 12, 3717-3723 , 2013



    • Peter Scherpelz, Dan Wulin, Betislav Sopik, K. Levin, A. K. Rajagopal, General pairing theory for condensed and noncondensed Cooper pairs of a superconductor in a high magnetic field, Phys. Rev. B 87, 024516, arxiv.org/pdf/1112.1112v3.pdf, 2013



    • H. S. Karthik, Hemant Katiyar, Abhishek Shukla, T. S. Mahesh, A. R. Usha Devi, A. K. Rajagopal, Inversion of moments to retrieve joint probabilities in quantum sequential measurements, PRA 87, 052118, arxiv.org/pdf/1304.0058v2.pdf, 2013



    • A. R. Usha Devi, H. S. Karthik, Sudha, A. K. Rajagopal, Macrorealism from entropic Leggett-Garg inequalities, PRA 87, 052103 (2013), arxiv.org/pdf/1208.4491v3.pdf, 2012



    • Sudha, A. R. Usha Devi, A. K. Rajagopal, Monogamy of quantum correlations in three qubit pure states using Rajagopal-Rendell quantum deficit, Phys. Rev. A85 012103, arxiv.org/pdf/1110.3026v1.pdf, 2012



    • Peter Scherpelz, Dan Wulin, K. Levin, A. K. Rajagopal, Pseudogap effects of Fermi gases in the presence of a strong effective magnetic field, Phys. Rev. A 87, 063602 (2013), arxiv.org/pdf/1207.4826v1.pdf, 2012



    • Arun Kumar Pati, Mark M. Wilde, A. R. Usha Devi, A. K. Rajagopal, Sudha, Quantum discord and classical correlation can tighten the uncertainty principle in the presence of quantum memory, Phys. Rev. A 86, 042105, arxiv.org/pdf/1204.3803v3.pdf, 2012



    • J. Prabhu Tej, A. R. Usha Devi, A. K. Rajagopal, Quantum reading of digital memory with non-Gaussian entangled light, PRA87, 052308 (2013), arxiv.org/pdf/1210.0791v2.pdf, 2012



    • (with A. R. Usha Devi, Sudha, and R. W. Rendell) Interplay of quantum stochastic and dynamical maps to discern markovianity, J. Qu. Info. Sci.,2, 47 , quant-ph/1201.0477, 2012



    • A.R. Usha Devi, Sudha, A.K.Rajagopal, Majorana representation of symmetric multiqubit states, Quantum Information Processing, Vol. 11, Issue 3, pp 685-710 (2012), arxiv.org/pdf/1103.3640, 2011



    • A. R. Usha Devi, A. K. Rajagopal, Sudha, Open-system quantum dynamics with correlated initial states, not completely positive maps, and non-Markovianity, Phys. Rev. A 83, 022109, arxiv.org/pdf/1011.0621, 2011



    • A. R. Usha Devi, A. K. Rajagopal, Sudha, Quantum dynamical maps and Markovianity, arxiv.org/pdf/1104.4566, 2011



    • A. R. Usha Devi, A. K. Rajagopal, Sudha, Quantumness of correlations and entanglement, Int. J. Quantum Inform. 09, 1757, arxiv.org/pdf/1105.4115, 2011



    • A R Usha Devi, Sudha, A. K. Rajagopal, Determining the whole pure symmetric N-qubit state from its parts, arxiv.org/pdf/1003.2450, 2010



    • Sudha, A. R. Usha Devi, A. K. Rajagopal, Entropic characterization of separability in Gaussian states, Phys. Rev. A 81, 024303, arxiv.org/pdf/0909.1087, 2010



    • A R Usha Devi, Sudha, A K Rajagopal, Interconvertibility and irreducibility of permutation symmetric three qubit pure states, arxiv.org/pdf/1002.2820, 2010



    • A. K. Rajagopal, A. R. Usha Devi, R. W. Rendell, Kraus representation of quantum evolution and fidelity as manifestations of Markovian and non-Markovian forms, Phys. Rev. A 82, 042107, arxiv.org/pdf/1007.4498, 2010



    • Sumiyoshi Abe, A. R. Usha Devi, A. K. Rajagopal, Thermostatistical aspect of Werner-type states and quantum entanglement, J. Phys. A: Math. Theor. 43, 045303, arxiv.org/pdf/0803.1430, 2010



    • A. R. Usha Devi, A. K. Rajagopal, Dynamical evolution of quantum oscillators toward equilibrium, Phys. Rev. E 80, 011136, arxiv.org/pdf/0901.1453, 2009



    • Michael Steiner, M. Frey, A. Gulian, R. W. Rendell, A. K. Rajagopal, Measurement of a subsystem of a coupled quantum system, Proc. SPIE, Vol. 7342, 73420F, 2009



    • A. R. Usha Devi, A. K. Rajagopal, Quantum target detection using entangled photons, Phys. Rev. A 79, 062320, arxiv.org/pdf/0903.3876, 2009



    • Sudha, A.V. Gopala Rao, A. R. Usha Devi, A.K. Rajagopal, A POVM view of the ensemble approach to polarization optics, J. Opt. Soc. Am. A 25, 874, arxiv.org/pdf/0704.0147, 2008



    • A. R. Usha Devi, R. Prabhu, A. K. Rajagopal, A scheme for amplification and discrimination of photons, J. Phys. B: Atomic, Molecular, & Optical Physics, 41, 235501, arxiv.org/pdf/0802.2315, 2008



    • A.K. Rajagopal, A. R. Usha Devi, R. W. Rendell, Michael Steiner, Distinctive sub-dynamics features of bipartite systems, arxiv.org/pdf/0807.1672, 2008



    • L. M. Woods, T. L. Reinecke, A. K. Rajagopal, Electron spin dynamics due to hyperfine coupling in quantum dots, Phys. Rev. B 77, 073313, 2008



    • A. R. Usha Devi, A. K. Rajagopal, Generalized Information Theoretic Measure to Discern the Quantumness of Correlations, Phys. Rev. Lett. 100, 140502, arxiv.org/pdf/0707.2195, 2008



    • A. R. Usha Devi, A. K. Rajagopal, Quantum Mechanical Basis of Vision, by Ramakrishna Chakravarthi, Proceedings (Neurons and Cognition) of the India-US Workshop on Science and Technology at the Nabo-Bio Interface, Bhubaneswar, India February 19-22, arxiv.org/pdf/0804.0190, 2008



    • A. R. Usha Devi, A. K. Rajagopal, Separability bounds on multiqubit moments due to positivity under partial transpose, Phys. Rev. A 78, 062334, arxiv.org/pdf/0808.2581, 2008



    • A. R. Usha Devi, R. Prabhu, A. K. Rajagopal, Characterizing Multiparticle Entanglement in Symmetric N-Qubit States via Negativity of Covariance Matrices, Phys. Rev. Lett. 98, 060501, arxiv.org/pdf/quant-ph/0609055v3.pdf, 2007



    • A. R. Usha Devi, R. Prabhu, A. K. Rajagopal, Collective multipolelike signatures of entanglement in symmetric N-qubit systems, Phys. Rev. A 76, 012322, arxiv.org/pdf/quant-ph/0612210, 2007



    • A. R. Usha Devi, M. S. Uma, R. Prabhu, A. K. Rajagopal, Constraints on the uncertainties of entangled symmetric qubits, Phys. Lett. A 364, 203, arxiv.org/pdf/quant-ph/0601035v4.pdf, 2007



    • (with Sumiyoshi Abe) Quantum dynamics in view of Einstein’s theory of Brownian motion, Physics A 375, 129 , cond-mat/0512097, 2007



    • A. K. Rajagopal, S. D. Mahanti, Sudhanshu S. Jha, Decoherence and fidelity of single-electron spin states in quantum dots: effects of nuclear hyperfine coupling and double occupancy, J. Physics: Condensed Matter 18, 10677, 2006



    • A. K. Rajagopal, Electron Spin Dynamics in a Quantum Dot due to Hyperfine Coupling with Nuclei in the Dot – An Exact Analysis, arxiv.org/abs/quant-ph/0602092, 2006



    • R. W. Rendell, A. K. Rajagopal, Structure of the phase in pure two-mode Gaussian states, Phys. Rev. A 73, 013806, 2006



    • A. K. Rajagopal, Superstatistics; a quantum generalization, arxiv.org/abs/cond-mat/0608679, 2006



    • A. K. Rajagopal, R. W. Rendell, Classical statistics inherent in a quantum density matrix, Phys. Rev. A 72, 022322, 2005



    • R. W. Rendell, A. K. Rajagopal, Entanglement of pure two-mode Gaussian states, Phys. Rev. A 72, 012330, 2005