36 citations · 62 across the 4 of their papers we have counts for
4 papers · 1 filter
Effect of qubit losses on Grover's quantum search algorithm
D. D. Bhaktavatsala Rao, Klaus Mølmer
We investigate the performance of Grover's quantum search algorithm on a register which is subject to loss of the particles that carry the qubit information. Under the assumption t…
From Zeno to anti-Zeno: decoherence-control dependence on the quantum statistics of the bath
D. D. Bhaktavatsala Rao, Gershon Kurizki
We demonstrate through exact solutions that a spin bath leads to stronger (faster) dephasing of a qubit than a bosonic bath with identical bath-coupling spectrum. This difference i…
Spin Decoherence from Hamiltonian dynamics in Quantum Dots
D. D. Bhaktavatsala Rao, V. Ravishankar, V. Subrahmanyam
The dynamics of a spin-1/2 particle coupled to a nuclear spin bath through an isotropic Heisenberg interaction is studied, as a model for the spin decoherence in quantum dots. The…
A redefinition of Concurrence and its generalisation to bosonic subsystems of N qubit systems
D. D. Bhaktavatsala Rao, V. Ravishankar
We refine the notion of concurrence in this paper by a redefinition of the concept. The new definition is simpler, computationally straight forward, and allows the concurrence to b…