Ashok Ajoy

Postdoctoral Scholar
UC Berkeley

Research interests: My primary interests are in experimental and theoretical magnetic resonance. I enjoy applying magnetic resonance techniques to problems in quantum simulation, quantum control and pulse sequence design. The goal of my research is to devise strategies for the control of quantum systems to achieve quantum aided metrology and practically viable quantum information processing.


  • 08/05-08/10  B.E. Electrical Engineering, BITS-Pilani, Goa (India).
  • 08/05-08/10  M.Sc. Physics, BITS-Pilani, Goa (India).
  • 09/09-12/09  Masters Thesis, Indian Institute of Science, Bangalore (India).   Advisor: Prof. Anil Kumar
  • 02/10-05/10  Masters Thesis, Technische Universität, Dortmund (Germany).   Advisor: Prof. Dieter Suter
  • 09/10-present  Ph.D. Nuclear Engineering, MIT, Cambridge (USA).



  1. A. Ajoy, Y. X. Liu, K. Saha, L. Marseglia, J.-C. Jaskula, U. Bissbort and P. Cappellaro
    Quantum Interpolation for High Resolution Sensing
    arXiv:1604.01677   [pdf]
  2. A. Ajoy, U. Bissbort, M.D. Lukin, R.L. Walsworth and P. Cappellaro
    Atomic-scale nuclear spin imaging using quantum-assisted sensors in diamond
    arXiv:1407.3134 -- Phys. Rev. X 5, 011001 (2015).   [pdf]  [SOM]
  3. G. Kaur, A. Ajoy and P. Cappellaro
    Decay of spin coherences in one-dimensional spin systems
    arXiv:1306.2620 -- New J. Phys. 15, 093035 (2013).   [pdf]
  4. A. Ajoy and P. Cappellaro
    Quantum simulation via filtered Hamiltonian engineering: application to perfect
    quantum transport in spin networks

    arXiv:1208.3656 -- Phys. Rev. Lett. 110, 220503 (2013).   [pdf]  [SOM]
  5. A. Ajoy and P. Cappellaro
    Perfect quantum transport in arbitrary spin networks
    arXiv:1207.5580 -- Phys. Rev. B 87, 064303 (2013).   [pdf]
  6. A. Ajoy and P. Cappellaro
    Stable three-axis nuclear-spin gyroscope in diamond
    arXiv:1205.1494 -- Phys. Rev. A 86, 062104 (2012).   [pdf]
  7. A. Ajoy and P. Cappellaro
    Mixed-state quantum transport in correlated spin networks
    arXiv:1204.1363 -- Phys. Rev. A 85, 042305 (2012).   [pdf]
  8. A. Ajoy, R.K. Rao, A. Kumar and P. Rungta
    Algorithmic approach to simulate Hamiltonian dynamics and an NMR simulation
    of Quantum State Transfer"

    arXiv:0911.5467 -- Phys. Rev. A 85, 030303(R) (2012) Rapid Communication.   [pdf]   [SOM]
  9. A. Ajoy, G.A. Álvarez and D. Suter
    Optimal pulse spacing for dynamical decoupling in the presence of a purely-dephasing
    arXiv:1011.6243 -- Phys. Rev. A 83, 032303 (2011).   [pdf]
  10. G.A. Álvarez, A. Ajoy, X. Peng and D. Suter
    Performance comparison of dynamical decoupling sequences for a qubit in a rapidly
    fluctuating spin-bath"
    arXiv:1008.1962 -- Phys. Rev. A 82, 042306 (2010).   [pdf]
  11. A. Ajoy and A. Kumar
    Hierarchical Genetic Algorithm Approach to Determine Pulse Sequences in NMR
    arXiv:0911.5465 (2009).   [pdf]
  12. A. Ajoy and P. Rungta
    Svetlichny's inequality and genuine tripartite nonlocality in three-qubit pure states
    arXiv:0901.0368 -- Phys. Rev. A 81, 052334 (2010).   [pdf]


  1. P. Cappellaro and A. Ajoy
    Stable three-axis nuclear spin gyroscope, U.S. Patent 2014/0327439 A1 (2014).   [pdf]


  • Diamonds could help bring proteins in focus, MIT News
  • Diamond sensor atom scale imaging proposed, Chemistry World
  • Quantum no hiding theorem confirmed for the first time, an application of our algorthmic quantum simulation technique was spotlighted by Phys. Org.
  • Doctoral students seek quantum control, MIT News