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Experimental realization of programmable quantum gate
Michal Micuda, Miroslav Jezek, Miloslav Dusek +1
We experimentally demonstrate a programmable single-qubit quantum gate. This device applies a unitary phase shift operation to a data qubit with the value of the phase shift being…
Experimental asymmetric phase-covariant quantum cloning of polarization qubits
Jan Soubusta, Lucie Bartuskova, Antonin Cernoch +2
We report on two optical realizations of the asymmetric phase-covariant cloning machines for polarization states of single photons. The experimental setups combine two-ph…
The Security of Practical Quantum Key Distribution
Valerio Scarani, Helle Bechmann-Pasquinucci, Nicolas J. Cerf +3
Quantum key distribution (QKD) is the first quantum information task to reach the level of mature technology, already fit for commercialization. It aims at the creation of a secret…