Spontaneous synchronization and quantum correlation dynamics of open spin systems
We discuss the emergence of spontaneous synchronization for an open spin-pair system
interacting only via a common environment. Under suitable conditions, and even in the …
interacting only via a common environment. Under suitable conditions, and even in the …
Non-Markovian dissipative dynamics of two coupled qubits in independent reservoirs: Comparison between exact solutions and master-equation approaches
The reduced dynamics of two interacting qubits coupled to two independent bosonic baths is
investigated. The one-excitation dynamics is derived and compared with that based on the …
investigated. The one-excitation dynamics is derived and compared with that based on the …
Decoherence times of universal two-qubit gates in the presence of broad-band noise
The controlled generation of entangled states of two quantum bits is a fundamental step
toward the implementation of a quantum information processor. In nano-devices this …
toward the implementation of a quantum information processor. In nano-devices this …
Intrinsic phonon decoherence and quantum gates in coupled lateral quantum-dot charge qubits
Recent experiments by [Hayashi, Phys. Rev. Lett. 91, 226804 (2003)] demonstrate coherent
oscillations of a charge quantum bit in laterally defined quantum dots. We study the intrinsic …
oscillations of a charge quantum bit in laterally defined quantum dots. We study the intrinsic …
Numerical and analytical approach to the quantum dynamics of two coupled spins in bosonic baths
The quantum dynamics of a spin chain interacting with multiple bosonic baths is described
in a mixed Wigner-Heisenberg representation. The formalism is illustrated by simulating the …
in a mixed Wigner-Heisenberg representation. The formalism is illustrated by simulating the …
Tunneling, decoherence, and entanglement of two spins interacting with a dissipative bath
MM Sahrapour, N Makri - The Journal of Chemical Physics, 2013 - pubs.aip.org
We use numerically exact iterative path integral methods to investigate the decoherence and
entanglement dynamics of a tunneling pair of two coupled qubits (spins) system interacting …
entanglement dynamics of a tunneling pair of two coupled qubits (spins) system interacting …
Robust stationary entanglement of two coupled qubits in independent environments
M Scala, R Migliore, A Messina… - The European Physical …, 2011 - Springer
The dissipative dynamics of two interacting qubits coupled to independent reservoirs at
nonzero temperatures is investigated, paying special attention to the entanglement …
nonzero temperatures is investigated, paying special attention to the entanglement …
Characterization of Quantum and Classical Critical Points for an Integrable Two-Qubit Spin–Boson Model
The class of two-interacting-qubit spin–boson models with vanishing transverse fields on the
spin-pair is studied. The model can be mapped exactly into two independent standard single …
spin-pair is studied. The model can be mapped exactly into two independent standard single …
Optimal control approach to dynamical suppression of decoherence of a qubit
H Jirari - Europhysics Letters, 2009 - iopscience.iop.org
We investigate optimal control of a single qubit coupled to an ohmic heat bath. For the weak
bath coupling regime, we derive a Bloch-Redfield master equation describing the evolution …
bath coupling regime, we derive a Bloch-Redfield master equation describing the evolution …
Effect of system level structure and spectral distribution of the environment on the decoherence rate
Minimizing the effect of decoherence on a quantum register must be a central part of any
strategy to realize scalable quantum-information processing. Apart from the strength of the …
strategy to realize scalable quantum-information processing. Apart from the strength of the …