Spontaneous emission of atomic systems in the presence of incident fields (2008)
We characterise the spontaneous emission time and direction from small numbers of dipole-coupled two-level atoms (2LAs) in the presence of incident fields. We show how to use adiabatic passage to...
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...
Super- and subradiant emission of two-level systems in the near-Dicke limit (2007)
Brooke, Peter G., Marzlin, Karl-Peter, Cresser, James D., Sanders, Barry C.
We analyze the stability of super- and subradiant states in a system of identical two-level atoms in the near-Dicke limit, i.e., when the atoms are very close to each other compared to the wavelength...
Decoherence-free quantum-information processing using dipole-coupled qubits (2007)
We propose a quantum-information processor that consists of decoherence-free logical qubits encoded into arrays of dipole-coupled qubits. High-fidelity single-qubit operations are performed...