Author

Sort by: Order: Results:

  • Density matrix tomography of singlet states 
    Roy, Soumya Singha; MAHESH, T. S. (Elsevier B.V., 2010-09)
    First direct and quantitative study of singlet states using density matrix tomography is reported. A robust scheme for the tomography of a general density matrix of two spin 1/2 nuclei is introduced for this purpose. The ...
  • Initialization of NMR quantum registers using long-lived singlet states 
    Roy, Soumya Singha; MAHESH, T. S. (American Physical Society, 2010-11)
    An ensemble of nuclear spin pairs under certain conditions is known to exhibit singlet state lifetimes much longer than other nonequilibrium states. This property of singlet states can be exploited in quantum information ...
  • Storing entanglement of nuclear spins via Uhrig dynamical decoupling 
    Roy, Soumya Singha; MAHESH, T. S.; Agarwal, G. S. (American Physical Society, 2011-06)
    Stroboscopic spin flips have already been shown to prolong the coherence times of quantum systems under noisy environments. Uhrig’s dynamical decoupling scheme provides an optimal sequence for a quantum system interacting ...
  • Investigation of the Leggett-Garg Inequality for Precessing Nuclear Spins 
    Athalye, Vikram; Roy, Soumya Singha; MAHESH, T. S. (American Physical Society, 2011-09)
    We report experimental implementation of a protocol for testing the Leggett-Garg inequality (LGI) for nuclear spins precessing in an external magnetic field. The implementation involves certain controlled operations, ...
  • NMR implementation of a quantum delayed-choice experiment 
    Roy, Soumya Singha; Shukla, Abhishek; MAHESH, T. S. (American Physical Society, 2012-02)
    We report an experimental demonstration of a quantum delayed-choice experiment via nuclear magnetic resonance techniques. Two spin-1/2 nuclei from each molecule of a liquid ensemble are used as target and ancilla qubits. ...
  • Evolution of quantum discord and its stability in two-qubit NMR systems 
    Katiyar, Hemant; Roy, Soumya Singha; MAHESH, T. S.; Patel, Apoorva (American Physical Society, 2012-07)
    We investigate evolution of quantum correlations in ensembles of two-qubit nuclear spin systems via nuclear magnetic resonance techniques. We use discord as a measure of quantum correlations and the Werner state as an ...

Search Repository


Advanced Search

Browse

My Account