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19 papers · 2 filters
Extraction of Singlet States from Noninteracting High-Dimensional Spins
Francesco Ciccarello, Mauro Paternostro, Myungshik S. Kim +1
We present a scheme for the extraction of singlet states of two remote particles of arbitrary quantum spin number. The goal is achieved through post-selection of the state of inter…
One-way quantum computing in a decoherence-free subspace
M. S. Tame, M. Paternostro, M. S. Kim
We introduce a novel scheme for one-way quantum computing (QC) based on the use of information encoded qubits in an effective cluster state resource. With the correct encoding stru…
Multiple copy distillation and purification of phase diffused squeezed states
Petr Marek, Jaromir Fiurasek, Boris Hage +3
We provide a detailed theoretical analysis of multiple copy purification and distillation protocols for phase diffused squeezed states of light. The standard iterative distillation…
Experimental Demonstration of Decoherence-Free One-Way Information Transfer
R. Prevedel, M. S. Tame, A. Stefanov +3
We report the experimental demonstration of a one-way quantum protocol reliably operating in the presence of decoherence. Information is protected by designing an appropriate decoh…
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…
On the distillation and purification of phase-diffused squeezed states
B. Hage, A. Franzen, J. DiGuglielmo +3
Recently it was discovered that non-Gaussian decoherence processes, such as phase-diffusion, can be counteracted by purification and distillation protocols that are solely built on…