Decoherence-free quantum information in Markovian systems (2008)
Patra, Manas K., Brooke, Peter G.
Decoherence in Markovian systems can result indirectly from the action of a system Hamiltonian which is usually fixed and unavoidable. Here, we show that in general in Markovian systems, because of...
Decoherence-free quantum information in the presence of dynamical evolution (2008)
Brooke, Peter G., Cresser, James D., Patra, Manas K.
We analyze decoherence-free (DF) quantum information in the presence of an arbitrary non-nearest-neighbor bath-induced system Hamiltonian using a Markovian master equation. We show that the most...
An Algebraic Characterization of Security of Cryptographic Protocols (2008)
Several of the basic cryptographic constructs have associated algebraic structures. Formal models proposed by Dolev and Yao to study the (unconditional) security of public key protocols form a group....