Since 1998 my work has pioneered several topics, some of which are highlighted below:

Other Papers


  1. "Physical Fault Tolerance of Nanoelectronics", T. Szkopek, V. Roychowdhury, A. Antoniadis and J. Damoulakis, Physical Review Letters, 106(17):6801 - 6804 (2011) LINK
  2. "Performance of Magnetic Quantum Cellular Automata and Limitations Due to Thermal Noise", Spedalieri, F.M., Jacob, A.P., Nikonov, D.E., Roychowdhury, V.P., IEEE Trans. on Nanotechnology, (99):1 - 10 (05/27/2010)   
  3. "Latency in Local, Two-Dimensional, Fault Tolerant Quantum Computing", Spedalieri, F.M., Roychowdhury, V.P., Quantum Information and Computation, 9(7&8):666 - 682 (2009)   
  4. "Algorithms on Ensemble Quantum Computers", Boykin, P.O., Mor, T., Roychowdhury, V., Vatan, F., Natural Computing, Springer, 1-17 (July 2008)   
  5. "Robustness of entangled states that are positive under partial transposition", Bandyopadhya, S., Ghosh, S., Roychowdhury, V., Physical Review A, 77(3):032318 - 1 - 032318 - 6 (March 2008)   
  6. "Boundary effects on entropy and two-site entanglement of the spin-1 valence-bond solid", Fan, H., Korepin, V., Roychowdhury, V., Hadley, C., Bose, S., Physical Review B, 76(014428):1 - 5 (July 2007)   
  7. "A Proof of the Security of Quantum Key Distribution", Biham , E., Boyer , M., Boykin, P.O., Mor, T., Roychowdhury, V., Journal of Cryptology, Springer New York, 19:381 - 439 (April 2006)   
  8. "Threshold Error Penalty for Fault-Tolerant Quantum Computation with Nearest Neighbor Communication", Szkopek, T., Boykin, P.O., Fan, H., Roychowdhury, V., Yablonovitch, E., Simms, G., Gyure, M., Fong, B., IEEE Transactions on Nanotechnology, 5(1):42 - 49 (January 2006)   
  9. "Eigenvalue estimation of differential operators with a quantum algorithm", Szkopek, T., Roychowdhury, V., Yablonovitch, E., Abrams, D.A., Physical Review A, 72(062318):1 - 11 (December 2005)   
  10. "Superadditivity Of Distillable Entanglement From Quantum Teleportation", Bandyopadhyay, S., Roychowdhury, V., Physical Review A, 72(060303):1 - 4 (December 2005) Rapid Communications   
  11. "Optimal two-qubit quantum circuits using exchange interactions", Fan, H., Roychowdhury, V., Szkopek, T., PHYSICAL REVIEW A, 72(052323):1 - 4 (November 2005)   
  12. "Exact entanglement cost of multiqubit bound entangled states", Bandyopadhyay, S., Roychowdhury, V., Physical Review A (Atomic, Molecular, and Optical Physics), 72(020302):1 - 4 (August 2005) Rapid Communications   
  13. "Information vs. Disturbance in Dimension D", Boykin, P.O., Roychowdhury, V.P., Journal of Quantum Information and Computation (QIC), 5(4):396 - 412 (July 2005) Special Issues on Quanum Information and Quantum Control   
  14. "Bell-correlated Activable Bound Entanglement in Multiqubit Systems", Bandyopadhyay, S., Chattopadhyay, I., Roychowdhury, V.P., Sarkar, D., Physical Review A, 71(062317):1 - 5 (June 2005)   
  15. "Non-full-rank Bound Entangled States Satisfying the Range Criterion", Bandyopadhyay, S., Ghosh, S., Roychowdhury, V.P., Physical Review A, 71(012316):1 - 6 (January 2005)   
  16. "Entanglement in a Valence-bond Solid State", Fan, H., Korepin, V., Roychowdhury, V.P., Physical Review Letters, 93(22):7203 - 7206 (November 2004)   
  17. "Algorithmic Cooling of Spins: A Practicable Method for Increasing Polarization", Fernandez, J.M., Lloyd, S., Mor, T., Roychowdhury, V.P., International Journal of Quantum Information, 2(4):461 - 477 (October 2004)   
  18. "Maximally disordered distillable quantum states", Bandyopadhyay, S., Roychowdhury, V., PHYSICAL REVIEW A (Rapid Communication), 69(040302(R)):1 - 4 (April 2004) Rapid Communications   
  19. "Classes of N-Copy Undistillable Quantum States with Negative Partial Transpostion", Bandyopadhyay, S., Roychowdhury, V.P., Phys. Rev. A, 68(22319):1 - 5 (August 2003)   
  20. "Optimal Encryption of Quantum Bits", Boykin, P.O., Roychowdhury, V.P., Phys. Rev. A, 67(042317):1 - 6 (April 2003)   
  21. "A New Proof for the Existence of Mutually Unbiased Bases", Bandyopadhyay, S., Boykin, P., Roychowdhury, V.P., Vatan F., Algorithmica, 34(4):512 - 528 (December 2002)   
  22. "Classification of Nonasymptotic Bipartite Pure-State Entanglement Transformations", Bandyopadhyay, S., Roychowdhury, V.P., Sen, U., Phys. Rev. A, 65(052315):1 - 4 (May 2002)   
  23. "Efficient Entanglement-Assisted Transformation for Bipartite Pure States", Bandyopadhyay, S., Roychowdhury, V.P., Physical Review A, 65(042306):1 - 5 (April 2002)   
  24. "Partial Recovery of Entanglement in Bipartite-Entanglement Transformations", Bandyopadhyay, S., Roychowdhury, V.P., Vatan, F., Phys. Rev. A (Rapid Communications), 65(040303(R)):1 - 4 (April 2002)   
  25. "Algorithmic Cooling and Scalable NMR Quantum Computers", Boykin, P.O., Mor, T., Roychowdhury, V.P., Vatan, F., Vrijen, R., Proc. National Academy of Sciences, 99(4):3388 - 3393 (March 2002)   
  26. "Bounds for the Weight Distribution of Weakly Self-Dual Codes", Roychowdhury, V.P., Vatan, F., IEEE Transactions on Information Theory, 47(1):393 - 396 (January 2001)   
  27. "Quantum Formulas: A Lower Bound and Simulation", Roychowdhury, V.P., Vatan, F., SIAM J. Comput., 31(2):460 - 476 (2001)   
  28. "Electron-Spin-Resonance Transistors for Quantum Computing in Silicon-Germanium Heterostructures", Vrijen, R., Yablonovitch, E., Wang, K., Jiang, H.W., Balandin, A., Roychowdhury, V., Mor, T., DiVincenzo, D., Physical Review A, 62:1 - 10 (2000)   
  29. "A New Universal and Fault-Tolerant Quantum Basis", Boykin, P.O., Mor, T., Pulver, M., Roychowdhury, V.P., Vatan, F., Information Processing Letters, 75:101 - 107 (2000)   
  30. "Spatially Correlated Qubit Errors and Burst-Correcting Quantum Codes", Vatan, F., Roychowdhury, V.P., Anantram, M.P., IEEE Transactions on Information Theory, 45(5):1703 - 1708 (July 1999)   
  31. "Metastable States and Information Propagation in a One-Dimensional Array of Locally Coupled Bistable Cells", Anantram, M.P., Roychowdhury, V.P., Applied Physics, 85(3):1622 - 1625 (02/01/1999)   
  32. "Nanoelectronic Implementations of Reversible and Quantum Logic", Bandyopadhyay, S., Balandin, A., Roychowdhury, V.P, Vatan, F., Superlattices and Microstructures, 23(3/4):445 - 464 (1998)   
  33. "Chemically Self-Assembled Nanoelectronic Computing Networks", Bandyopadhyay, S., Roychowdhury, V.P., Janes, D.B., International Journal of High Speed Electronics and Systems, 9(1):1 - 35 (1998)   
  34. "Nanoelectronic Architecture for Boolean Logic", Roychowdhury, V.P., Janes, D.B., Bandyopadhyay, S., Proceedings of the IEEE: Special Issue on Nanotechnology, 85(4):574 - 588 (April 1997)   
  35. "Switching in a Reversible Spin Logic Gate", Bandyopadhyay, S., Roychowdhury, V.P., Superlattices and Microstructures, 22(1) (1997) 6 pages   
  36. "Scalable Massively Parallel Algorithms for Computational Nanoelectronics", Wang, X., Roychowdhury, V.P., Balasingam, P., Parallel Computing, (22):1931 - 1963 (1997)   
  37. "Collective Computational Activity in Self-Assembled Arrays of Quantum Dots: A Novel Neuromorphic Architecture for Nanoelectronics", Roychowdhury, V.P., Janes, D.B., Bandyopadhyay, S., Wang, X., IEEE Transactions on Electron Devices, 43(10):1688 - 1699 (October 1996)   
  38. "Computing with Quantum Dots: Novel Architectures for Nanoelectronics", Bandyopadhyay, S., Roychowdhury, V.P., Wang, X., Physics of Low-Dimensional Structures, 8/9:29 - 82 (1995)    


  1. "On the Existence of Nonadditive Quantum Codes", Roychowdhury, V.P., Vatan, F., In: Quantum Computing and Quantum Communications, Colin P. Willimas, Editorm Springer Publisher (Ed.), 325-336 (1999)   
  2. "Fundamental Issues in Atomic/Nanoelectronic Computation", Roychowdury, V., Anantram, M.P., In: Communications, Computation, Control and Signal Processing, A. Paulraj, V.P. Roychowdhury, and C.D. Schaper (eds.) (Eds.), 309-329 (October 1996) Boston, MA, Kluwer Academic Publishers   


  1. "Reversible Fault-Tolerant Logic", Boykin, P.O., Roychowdhury, V.P., Proceedings of the 2005 International Conference on Dependable Systems and Networks (DSN), Japan, 1-10 (July 2005)   
  2. "Fault Tolerant Computation on Ensemble Quantum Computers", Boykin, P.O., Mor, T., Roychowdhury, V.P., Vatan, F., Proceedings of the 2004 International Conference on Dependable Systems and Networks, 157-166 (July 2004) Italy   
  3. "A Proof of the Security of Quantum Key Distribution", Boykin, P.O., Mor, T., Roychowdhury, V., Biham, E., Boyer, M., Proceedings of the Thirty Second Annual ACM Symposium on Theory of Computing, 715-724 (05/21/2000 - 05/23/2000) Portland, OR   
  4. "On Universal and Fault-Tolerant Quantum Computing: A Novel Basis and A New Constructive Proof of Universality for Shor's Basis", Boykin, P.O., Mor, T., Pulver, M., Roychowhdury, V., Vatan, F., Proceedings of IEEE Anual Symposium in Foundations of Computer Science, FOCS '99, 486-494 (1999) 
  5. "Quantum Coupled Architectures for Logic Circuits: Issues and Problems", Bandyopadhyay, S., Roychowdhury, V.P., Proceedings of the International Conference on Quantum Devices and Circuits, Imperial College Press, London (Ed.), 271-276 (1997) Alexandria, Egypt   
  6. "On Computing with Locally-Interconnected Architectures in Atomic/Nanoelectronic Systems", Roychowdhury, V.P., Anantram, M.P., Proceedings of the IEEE International Conference on Application-Specific Systems, Architectures and Processors, 14-23 (1997) Zurich, Switzerland, July 14-16, 1997   
  7. "Can Metastable States Affect Ground State Computing?", Anantram, M.P., Roychowdhury, V.P., Fourth Workshop on Physics and Computation: PhysComp96, eds. T. Toffili, M. Biafore, and J. Leao (Eds.), 17-21 (November 1996) Boston, MA, published in, "PhysComp96, " November 22-24, 1996