651 citations
- University of OxfordGB32 papers
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4 papers · 2 filters
Entanglement of distant flux qubits mediated by non-classical electromagnetic field
E. Zipper, M. Kurpas, J. Dajka +1
The mechanism for entanglement of two flux qubits each interacting with a single mode electromagnetic field is discussed. By performing a Bell state measurements (BSM) on photons w…
Nested entangled states for distributed quantum channels
C. Di Franco, M. Paternostro, M. S. Kim
We find a coupling-strength configuration for a linear chain of N spins which gives rise to simultaneous multiple Bell states. We suggest a way such an interesting entanglement pat…
Noise resilience and entanglement evolution in two non-equivalent classes of quantum algorithms
C. Di Franco, M. Paternostro, M. S. Kim
The speed-up provided by quantum algorithms with respect to their classical counterparts is at the origin of scientific interest in quantum computation. However, the fundamental re…
Subnormalized states and trace-nonincreasing maps
Valerio Cappellini, Hans-Juergen Sommers, Karol Zyczkowski
We investigate the set of completely positive, trace-nonincreasing linear maps acting on the set M_N of mixed quantum states of size N. Extremal point of this set of maps are chara…