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Publications

Preprints

    Q.Control : States & Dynamics :
  1. Physics-informed neural network for quantum control of NMR registers,
    Priya Batra and T. S. Mahesh,
    arXiv:2407.00444 [quant-ph].

    2. Q.Control : States & Dynamics :
  2. Quantum Alternating Operator Ansatz for the Preparation and Detection of Long-Lived Singlet States in NMR,
    Pratham Hullamballi, Vishal Varma, and T. S. Mahesh,
    arXiv:2406.05015 [quant-ph].

    3. Q.Characterization : Q.Simulation : States & Dynamics :
  3. Selective Wigner phase space tomography and its application for studying quantum chaos
    Deepesh Khushwani, Priya Batra, V. R. Krithika, and T. S. Mahesh,
    arXiv:2310.08307 [quant-ph].

    4. System & Methods : States & Dynamics : Noise & Decoherence :
  4. Unambiguous measurement of information scrambling in a hierarchical star-topology system,
    Deepak Khurana, V. R. Krithika, and T. S. Mahesh
    arXiv:1906.02692 [quant-ph].

    5. Q.Control : Q.Algorithm : Q.Correlation : Noise & Decoherence :
  5. Dynamical protection of nonclassical correlation in a quantum algorithm,
    V. S. Anjusha and T. S. Mahesh,
    arXiv:1802.02792 [quant-ph].

    6. Q.Control :
  6. Rapid Exponentiation using Discrete Operators: Applications in Optimizing Quantum Controls and Simulating Quantum Dynamics,
    Gaurav Bhole, T. S. Mahesh,
    arXiv:1707.02162 [quant-ph].

    7. Q.Control :
  7. Pauli Decomposition over Commuting Subsets: Applications in Gate Synthesis, State Preparation, and Quantum Simulations,
    Swathi S. Hegde, K. R. Koteswara Rao, T. S. Mahesh,
    arXiv:1603.06867 [quant-ph].

    8. System & Methods : Noise & Decoherence :
  8. Dynamical Decoupling of Spin-Clusters using Solid State NMR,
    Abhishek Shukla and T. S. Mahesh,
    arXiv: quant-ph:1110.1473.

    9. Q.Simulation : States & Dynamics :
  9. Study of Electromagnetically Induced Transparency using long-lived Singlet States,
    Soumya Singha Roy and T. S. Mahesh,
    arXiv: quant-ph:1103.3386.

Reviews, Book Chapters

    Q.Control :
  1. Quantum Optimal Control: Practical Aspects and Diverse Methods
    T S Mahesh, Priya Batra, M. Harshanth Ram
    arXiv:2205.15574 [quant-ph].
    J Indian Inst Sci (2022). https://doi.org/10.1007/s41745-022-00311-2.

    2. System & Methods : Q.Simulation : Q.Correlation : States & Dynamics :
  2. Star-topology Registers: NMR and Quantum Information Perspectives,
    T S Mahesh, Deepak Khurana, Krithika V R, Sreejith G J, C S Sudheer Kumar,
    J. Phys.: Condens. Matter 33 383002 (2021)
    arXiv:2012.05203 [quant-ph].

    3. States & Dynamics : System & Methods : Noise & Decoherence :
  3. Long-Lived Singlet State: From NMR quantum information perspectives,
    T S Mahesh and Deepak Khurana,
    Book chapter in "Long-Lived Nuclear Spin Order" edited by Giuseppe Pileio, published by Royal Society of Chemistry (2020).

    4. Q.Correlation - States & Dynamics :
  4. Quantum Correlations in NMR systems,
    T. S. Mahesh, C. S. Sudheer Kumar, Udaysinh T. Bhosale,
    Book chapter in "Lectures on General Quantum Correlations and their Applications", Springer, 2017.
    arXiv:1608.06579 [quant-ph].

    5. Q.Characterization :
  5. Ancilla-assisted measurements on quantum ensembles: general protocols and applications in NMR quantum information processing,
    T.S. Mahesh, Abhishek Shukla, Swathi S. Hegde, C.S. Sudheer Kumar, Hemant Katiyar, Sharad Joshi and K.R. Koteswara Rao
    Current Science, 109, 1987 (2015).
    arXiv:1509.04506 [quant-ph].


    6. System & Methods : States & Dynamics :
  6. Quantum Information Processing by NMR,
    T. S. Mahesh
    Resonance, 1053, 20 (2015).

    7. System & Methods : States & Dynamics :
  7. Spins as qubits: Quantum information processing by NMR,
    D. Suter and T. S. Mahesh,
    J. Chem. Phys.128, 052206, (2008).

    8. System & Methods : States & Dynamics :
  8. Quantum computation using NMR,
    Kavita Dorai, T. S. Mahesh, Arvind, and Anil Kumar,
    Current Science 79, 1447 (2000).

    9. System & Methods : States & Dynamics :
  9. Developments in Quantum Information Processing by NMR: Use of Quadrupolar and Dipolar couplings,
    Anil Kumar, K. V. Ramanathan, T. S. Mahesh, Neeraj Sinha, and K. V. R. M. Murali,
    Pramana Journal of Physics, 59, 243 (2002).

Journal articles

    Q.Characterization : Q.Simulation : States & Dynamics :
  1. Observing Algebraic Variety of Lee-Yang Zeros in Inaccessible Systems
    Arijit Chatterjee, T. S. Mahesh, Mounir Nisse, and Yen-Kheng Lim,
    Phys. Rev. A 109, 062601 (2024),
    arXiv:2308.12302 [quant-ph].

    2. Q.Correlation : States & Dynamics : Noise & Decoherence :
  2. Experimental Verification of Many-Body Entanglement Using Thermodynamic Quantities,
    Jitendra Joshi, Mir Alimuddin, T S Mahesh, and Manik Banik,
    Phys. Rev. A (Letter) 109, L020403 (2024)
    arXiv:2305.15012 [quant-ph].

    3. States & Dynamics : Q.Simulation :
  3. NMR investigations of Dynamical Tunneling in Spin Systems,
    V. R. Krithika, M. S. Santhanam, and T. S. Mahesh
    Phys. Rev. A 108, 032207 (2023),
    arXiv:2212.12350 [quant-ph].

    4. States & Dynamics : System & Methods :
  4. Long-lived singlet state in oriented phase and its survival across the phase transition into isotropic phase,
    Vishal Varma and T S Mahesh
    Phys. Rev. Appl. 20, 034030 (2023) [Editor Suggested],
    arXiv:2304.10459 [quant-ph].

    5. Q.Control : States & Dynamics :
  5. Counterdiabatic driving for long-lived singlet state preparation,
    Abhinav Suresh, Vishal Varma, Priya Batra, and T S Mahesh,
    J. Chem. Phys. 159, 024202 (2023),
    arXiv:2305.02096 [quant-ph].

    6. Q.Control :
  6. Recommender System Expedited Quantum Control Optimization
    Priya Batra, M. Harshanth Ram, and T. S. Mahesh,
    Physics Open 14, 100127 (2023),
    arXiv:2201.12550 [quant-ph]

    7. Q.Simulation : States & Dynamics :
  7. Experimental investigation of a quantum battery using star-topology NMR spin systems,
    Jitendra Joshi and T. S. Mahesh,
    Phys. Rev. A 106, 042601 (2022),
    arXiv:2112.15437 [quant-ph].

    8. States & Dynamics :
  8. Observation of quantum phase-synchronization in a nuclear spin-system
    V R Krithika, Parvinder Solanki, Sai Vinjanampathy, and T. S. Mahesh,
    Phys. Rev. A 105, 062206 (2022),
    arXiv:2112.12088 [quant-ph].

    9. Q.Characterization :
  9. Tomographic entanglement indicators from NMR experiments
    B. Sharmila, V. R. Krithika, Soham Pal, T. S. Mahesh, S. Lakshmibala, V. Balakrishnan
    J. Chem. Phys. 156, 154102 (2022),
    arXiv:2105.08555 [quant-ph].

    10. Q.Control : Noise & Decoherence :
  10. Robust Quantum Control using Hybrid Pulse Engineering
    M. Harshanth Ram, V. R. Krithika, Priya Batra, and T. S. Mahesh
    Phys. Rev. A 105, 042437 (2022)
    arXiv:2112.01279 [quant-ph].

    11. System & Methods :
  11. Magnetic field-assisted spectral decomposition and imaging of charge states of NV centers in diamond
    T. Chakraborty, R. Bhattacharya, V. S. Anjusha, M. Nesladek, D. Suter, T. S. Mahesh
    Phys. Rev. Applied 17, 024046 (2022),
    arXiv:2103.12807 [quant-ph].

    12. Q.Characterization : Q.Correlation : States & Dynamics :
  12. Efficient Characterization of Quantum Evolutions via a Recommender System
    Priya Batra, Anukriti Singh, T. S. Mahesh
    Quantum 5, 598 (2021).
    arXiv:2005.10555 [quant-ph].

    13. Q.Simulation : Q.Correlation :
  13. Observation of interaction induced blockade and local spin freezing in a NMR quantum simulator,
    V. R. Krithika, Soham Pal, Rejish Nath, T. S. Mahesh,
    Phys. Rev. Research 3, 033035 (2021)
    arXiv:2005.04445 [quant-ph].

    14. Q.Correlation : States & Dynamics :
  14. Experimental localisation of quantum entanglement through monitored classical mediator,
    Soham Pal, Priya Batra, Tomasz Paterek, T. S. Mahesh,
    Quantum 5, 478 (2021).
    arXiv:1909.11030 [quant-ph].

    15. Q.Simulation : Q.Correlation :
  15. Experimental study of the thermodynamic uncertainty relation,
    S Pal, S Saryal, D Segal, TS Mahesh, BK Agarwalla,
    Phys. Rev. Research 2, 022044(R) (2020)
    arXiv:1912.08391 [cond-mat.stat-mech].

    16. Q.Control :
  16. Push-Pull Optimization of Quantum Controls,
    Priya Batra, V. R. Krithika, T. S. Mahesh
    Phys. Rev. Research 2, 013314 (2020),
    arXiv:1909.06283 [quant-ph].

    17. Q.Simulation : States & Dynamics :
  17. Experimental verification of quantum heat exchange fluctuation relation,
    Soham Pal, T S Mahesh, Bijay Kumar Agarwalla,
    Phys. Rev. A 100, 042119 (2019),
    arXiv:1811.07291 [cond-mat.stat-mech].

    18. States & Dynamics : Q.Simulation : Q.Correlation :
  18. NMR studies of quantum chaos in a two-qubit kicked top,
    V R Krithika, V S Anjusha, Udaysinh T. Bhosale, T. S. Mahesh,
    Phys. Rev. E 99, 032219 (2019),
    arXiv:1810.11963 [quant-ph].

    19. States & Dynamics : Noise & Decoherence : Q.Control :
  19. Experimental emulation of quantum non-Markovian dynamics and coherence protection in the presence of information back-flow,
    Deepak Khurana, Bijay Kumar Agarwalla, T. S. Mahesh,
    Phys. Rev. A 99, 022107 (2019),
    arXiv:1805.10772 [quant-ph].

    20. Q.Control : Q.Algorithm :
  20. Hybrid scheme for factorization: Factoring 551 using a 3-qubit NMR quantum adiabatic processor,
    Soham Pal, Saranyo Moitra, V. S. Anjusha, Anil Kumar, T. S. Mahesh,
    Pramana – J. Phys. 26, 92 (2019)
    arXiv:1611.00998 [quant-ph].

    21. Q.Control : Q.Characterization : Q.Correlation : States & Dynamics :
  21. Ancilla Induced Amplification of Quantum Fisher Information,
    C. S. Sudheer Kumar and T. S. Mahesh,
    Eur. Phys. J. Plus (2018) 133: 460
    arXiv:1801.01396 [quant-ph].

    22. States & Dynamics : System & Methods : Q.Control : Q.Correlation :
  22. Rigidity of temporal order in periodically driven spins in star-shaped clusters,
    Soham Pal, Naveen Nishad, T S Mahesh, G J Sreejith,
    Phys. Rev. Lett. 120, 180602 (2018);
    arXiv:1708.08443 [quant-ph].
    23. Q.Control : States & Dynamics :
  23. Bang-Bang Optimal Control of Large Spin Systems: Enhancement of 13C-13C Singlet-Order at Natural Abundance,
    Deepak Khurana, T. S. Mahesh,
    J. Magn. Reson. 284, 8 (2017)
    arXiv:1706.02594 [quant-ph].

    24. System & Methods : States & Dynamics :
  24. Strong Algorithmic Cooling in Large Star-Topology Quantum Registers,
    Varad R. Pande, Gaurav Bhole, Deepak Khurana, T. S. Mahesh,
    Phys. Rev. A 96, 012330 (2017);
    arXiv:1702.04992 [quant-ph].
    25. System & Methods : Noise & Decoherence :
  25. Spectral investigation of the noise influencing multi-qubit states,
    Deepak Khurana, Govind Unnikrishnan, T. S. Mahesh,
    Phys. Rev. A 94, 062334 (2016);
    arXiv:1608.04292 [quant-ph].

    26. Q.Characterization :
  26. Discriminating between Luders and von Neumann measuring devices: An NMR investigation,
    C. S. Sudheer Kumar, Abhishek Shukla, and T. S. Mahesh,
    Phys. Lett. A, 380, 3612 (2016).
    arXiv:1607.05723 [quant-ph].

    27. Q.Control : Q.Algorithm :
  27. Steering Quantum Dynamics via Bang-Bang Control: Implementing optimal fixed point quantum search algorithm,
    Gaurav Bhole, Anjusha V. S., T. S. Mahesh,
    Phys. Rev. A 93, 042339 (2016);
    arXiv:1512.08385 [quant-ph].

    28. States & Dynamics : Q.Correlation :
  28. NMR investigation of contextuality in a quantum harmonic oscillator via pseudospin mapping,
    Hemant Katiyar, C.S. Sudheer Kumar, T.S. Mahesh,
    Eur. Phys. Lett. 113, 20003 (2016).
    arXiv:1503.05883 [quant-ph].

    29. Q.Characterization : Q.Simulation : States & Dynamics :
  29. NMR simulation of the Quantum Pigeonhole Effect,
    Anjusha V. S., Swathi S. Hegde, and T. S. Mahesh,
    Phys. Lett. A, 380, 577 (2016).
    arXiv:1509.03963v1 [quant-ph].

    30. System & Methods : Miscellaneous :
  30. Benford Analysis: A useful paradigm for spectroscopic analysis,
    Gaurav Bhole, Abhishek Shukla, T. S. Mahesh,
    Chem. Phys. Lett. 639, 36 (2015).
    arXiv:1408.5735 [physics.data-an];
    arXiv:1406.7077 [physics.data-an].

    31. States & Dynamics : Q.Simulation : -->
  31. Freezing a Quantum Magnet by Repeated Quantum Interference: An Experimental Realization,
    Swathi S. Hegde, Hemant Katiyar, T. S. Mahesh, Arnab Das,
    Phys. Rev. B 90, 174407(2014);
    arXiv:1307.8219 [quant-ph].

    32. Q.Characterization : States & Dynamics :
  32. Single-Scan Quantum Process Tomography,
    Abhishek Shukla and T. S. Mahesh,
    Phys. Rev. A 90, 052301(2014);
    arXiv:1404.7830 [quant-ph].

    33. Q.Characterization : Q.Simulation :
  33. Estimating Franck-Condon factors using an NMR quantum processor,
    Sharad Joshi, Abhishek Shukla, Hemant Katiyar, Anirban Hazra, and T. S. Mahesh,
    Phys. Rev. A 90, 022303 (2014);
    arXiv:1405.2400 [quant-ph].

    34. Noise & Decoherence : Q.Control :
  34. Engineered Decoherence: Characterization and Suppression,
    Swathi S. Hegde and T. S. Mahesh,
    Phys. Rev. A 89, 062317 (2014);
    arXiv:1403.5452 [quant-ph].

    35. System & Methods : Q.Correlation : States & Dynamics :
  35. NOON states in star-topology spin-systems: Applications in diffusion studies and RF inhomogeneity mapping
    Abhishek Shukla, Manvendra Sharma, and T. S. Mahesh,
    Chem. Phys. Lett. 592, 227 (2014).
    Based on arXiv: quant-ph:1110.1481 and arXiv: quant-ph:1203.4414v1.

    36. Q.Control : Q.Simulation :
  36. Efficient simulation of unitary operators by combining two numerical algorithms: An NMR simulation of the mirror-inversion propagator of an XY spin chain,
    K. Rama Koteswara Rao, T. S. Mahesh, and Anil Kumar,
    Phys. Rev. A 90, 012306 (2014)
    arXiv:1307.5220 [quant-ph].

    37. Q.Simulation :
  37. Quantum simulations of a particle in one-dimensional potentials using NMR,
    Ravi Shankar, Swathi S. Hegde, and T. S. Mahesh,
    Phys. Lett. A 378, 10 (2013),
    arXiv:1307.3318 [quant-ph]

    38. Q.Characterization :
  38. Ancilla Assisted Quantum State Tomography in Many-Qubit Registers,
    Abhishek Shukla, K. Rama Koteswara Rao, and T. S. Mahesh,
    Phys. Rev. A 87, 062317 (2013). ,
    arXiv:1304.5851 [quant-ph]

    39. Q.Characterization : Q.Correlation :
  39. Inversion of moments to retrieve joint probabilities in quantum sequential measurements,
    H. S. Karthik, Hemant Katiyar, Abhishek Shukla, T. S. Mahesh, A. R. Usha Devi, A. K. Rajagopal,
    Phys. Rev. A 87, 052118 (2013). ,
    arXiv:1301.1834 [quant-ph]

    40. Q.Characterization : Q.Simulation :
  40. Multipartite quantum correlations reveal frustration in a quantum Ising spin system,
    K. Rama Koteswara Rao, Hemant Katiyar, T. S. Mahesh, Aditi Sen (De), Ujjwal Sen, and Anil Kumar1
    Phys. Rev. A 88, 022312 (2013);
    arXiv:1301.1834 [quant-ph]

    41. Q.Characterization : Q.Correlation :
  41. Violation of Entropic Leggett-Garg Inequality in Nuclear Spin Ensembles,
    Hemant Katiyar, Abhishek Shukla, Rama Koteswara Rao, and T. S. Mahesh,
    Phys. Rev. A 87, 052102 (2013). ,
    arXiv:1210.1970 [quant-ph]

    42. Q.Correlation : Noise & Decoherence :
  42. Evolution of quantum discord and its stability in two-qubit NMR systems,
    Hemant Katiyar, Soumya Singha Roy, T.S. Mahesh, and Apoorva Patel,
    Phys. Rev. A 86, 012309 (2012). ,
    arXiv:1203.1756v2 [quant-ph] ,

    43. Q.Characterization : States & Dynamics :
  43. NMR implementation of Quantum Delayed-Choice Experiment,
    Soumya Singha Roy, Abhishek Shukla, and T. S. Mahesh,
    Phys. Rev. A 85, 022109 (2012). ,
    arXiv: quant-ph:1112.3524.

    44. Q.Characterization : States & Dynamics : Noise & Decoherence :
  44. Investigation of Leggett-Garg inequality for precessing nuclear spins,
    Vikram Athalye, Soumya Singha Roy, and T. S. Mahesh,
    Phys. Rev. Lett. 107, 130402 (2011).

    45. Q.Correlation : States & Dynamics : Noise & Decoherence :
  45. Storing entanglement of nuclear spins via Uhrig Dynamical Decoupling,
    Soumya Singha Roy, T. S. Mahesh, and G. S. Agarwal,
    Phys. Rev. A 83, 062326 (2011).
    arXiv: quant-ph:1102.3560

    46. States & Dynamics :
  46. Initialization of NMR Quantum Registers using Long-Lived Singlet States,
    Soumya Singha Roy and T. S. Mahesh,
    Phys. Rev. A, 82, 052302 (2010).

    47. Q.Characterization : States & Dynamics :
  47. Density matrix tomography of singlet states,
    Soumya Singha Roy and T.S. Mahesh,
    J. Magn. Reson, 206, 127 (2010).

    48. System & Methods :
  48. Gelation of Covalently Edge-modified Laponites in Aqueous Media: Rheology and NMR,
    S. Patil, R. Mathew, T. G. Ajithkumar, P. Rajamohanan, T. S. Mahesh, G. Kumaraswamy,
    J. Phys. Chem B, 112, 4536, (2008).

    49. Q.Control : Q.Algorithm :
  49. NMR implementation of adiabatic SAT algorithm using strongly modulated pulses,
    Avik Mitra, T.S. Mahesh, and Anil Kumar,
    J. Chem. Phys. 128,124110, (2008).

    50. Q.Algorithm :
  50. Factorizing numbers with the Gauss sum technique: NMR implementations,
    T. S. Mahesh, Nageswaran Rajendran, Xinhua Peng, and Dieter Suter,
    Phys. Rev. A 75, 062303 (2007).

    51. System & Methods : Q.Algorithm :
  51. Quantum-information processing using strongly dipolar coupled nuclear spins,
    T. S. Mahesh and Dieter Suter,
    Phys. Rev. A 74, 062312 (2006).

    52. System & Methods : Q.Control : Q.Algorithm :
  52. Benchmarking Quantum Control Methods on a 12-Qubit System,
    C. Negrevergne, T. S. Mahesh, C. A. Ryan, M. Ditty, F. Cyr-Racine, W. Power, N. Boulant, T. Havel, D. G. Cory, and R. Laflamme,
    Phys. Rev. Lett. 96, 170501 (2006).

    53. System & Methods : States & Dynamics :
  53. Quantum Information Processing by NMR using strongly coupled spins,
    T. S. Mahesh, Neeraj Sinha, A. Ghosh, R. Das, M. H. Levitt, K. V. Ramanathan, Anil Kumar,
    Current Science 85, 932 (2003).
    arXiv: quant-ph/0212123.

    54. System & Methods : Q.Characterization :
  54. Efficient quantum state tomography for quantum information processing using a two-dimensional Fourier Transform technique,
    Ranabir Das, T. S. Mahesh and Anil Kumar,
    Phys. Rev. A, 67, 062304 (2003).

    55. Q.Characterization : Q.Algorithm :
  55. Experimental implementation of Grover's search algorithm using efficient quantum state tomography,
    Ranabir Das, T. S. Mahesh and Anil Kumar
    Chem. Phys. Lett. 369, 8 (2003).

    56. System & Methods : Q.Control : Q.Algorithm :
  56. Implementation of Conditional Phase shift Gates for quantum information processing by NMR, using transition selective pulses,
    Ranabir Das, T. S. Mahesh and Anil Kumar,
    J. Magn. Reson. 159, 46 (2002).

    57. System & Methods :
  57. Quantum-information processing by nuclear magnetic resonance: Experimental implementation of half-adder and subtractor operations using an oriented spin - 7/2 system,
    K. V. R. M. Murali, Neeraj Sinha, T. S. Mahesh, Malcolm H. Levitt, K. V. Ramanathan, and Anil Kumar,
    Phys. Rev. A. 66, 022313 (2002).

    58. System & Methods : States & Dynamics :
  58. Ensemble quantum-information processing by NMR: Implementation of gates and the creation of pseudopure states using dipolar coupled spins as qubits,
    T. S. Mahesh, Neeraj Sinha, K. V. Ramanathan, and Anil Kumar,
    Phys.Rev. A, 65, 022312 (2002).

    59. System & Methods : States & Dynamics :
  59. Toward quantum information processing by nuclear magnetic resonance: Pseudopure states and logical operations using selective pulses on an oriented spin 3/2 nucleus,
    Neeraj Sinha, T. S. Mahesh, K. V. Ramanathan, and Anil Kumar,
    J. Chem. Phys. 114, 4415 (2001).

    60. States & Dynamics :
  60. Ensemble quantum-information processing by NMR: Spatially averaged logical labeling technique for creating pseudopure states,
    T. S. Mahesh and Anil Kumar,
    Phys. Rev. A, 64, 012307 (2001).

    61. System & Methods : Q.Control : States & Dynamics :
  61. Implementing logic gates and the Deutsch-Jozsa Quantum Algorithm by Two-Dimensional NMR using spin- and transition-selective pulses,
    T. S. Mahesh, Kavita Dorai, Arvind, and Anil Kumar,
    J. Magn. Reson. 148, 95 (2001)
    arXiv:quant-ph/0006123

    62. System & Methods :
  62. Suppression of sidebands in two-dimensional exchange and MQMAS spectroscopies in solids by variable-speed magic-angle sample spinning,
    T.S. Mahesh, T. G. Ajithkumar, C. S. Nagaraja, G. Bodenhausen, and Anil Kumar,
    Chem. Phys. Lett. 319, 278 (2000).