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6 papers · 2 filters
Entangling power of two-qubit gates on mixed states
Zhe Guan, Huan He, Yong-Jian Han +3
The ability to reach a maximally entangled state from a separable one through the use of a two-qubit unitary operator is analyzed for mixed states. This extension from the known ca…
Dynamical energy transfer in ac driven quantum systems
Maria Florencia Ludovico, Jong Soo Lim, Michael Moskalets +2
We analyze the time-dependent energy and heat flows in a resonant level coupled to a fermionic continuum. The level is periodically forced with an external power source that suppli…
On the spectral origin of non-Markovianity: an exact finite model
Ruggero Vasile, Fernando Galve, Roberta Zambrini
Non-homogeneous chain environments (e.g. segmented ion traps) are investigated through an exact diagonalization approach. Different spectral densities, including band-gaps, can be…
Spontaneous synchronization and quantum correlation dynamics of open spin systems
G. L. Giorgi, F. Plastina, G. Francica +1
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 presence…
Avoiding dissipation in a system of three quantum harmonic oscillators
Gonzalo Manzano, Fernando Galve, Roberta Zambrini
We analyze the symmetries in an open quantum system composed by three coupled and detuned harmonic oscillators in the presence of a common heat bath. It is shown analytically how t…
Synchronization, quantum correlations and entanglement in oscillator networks
Gonzalo Manzano, Fernando Galve, Gian Luca Giorgi +2
Synchronization is one of the paradigmatic phenomena in the study of complex systems. It has been explored theoretically and experimentally mostly to understand natural phenomena,…