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Experimental realization of a single qubits purification protocol
Author(s) -
Masullo L.,
Ricci M.,
De Martini F.
Publication year - 2004
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/prop.200410176
Subject(s) - realization (probability) , qubit , entanglement distillation , quantum entanglement , quantum mechanics , photonics , physics , protocol (science) , polarization (electrochemistry) , quantum , topology (electrical circuits) , electronic engineering , mathematics , bell state , chemistry , engineering , electrical engineering , statistics , medicine , alternative medicine , pathology
We report on the first experimental realization of the single qubits purification protocol [J. I. Cirac, A. K. Ekert, and C. Macchiavello, Phys. Rev. Lett. 82 , 4344 (1999)] for two copies of a qubit sent through a depolarizing channel. The purification of the polarization‐encoded photonic qubits is achieved with passive linear optical elements. Our experimental results suggest that the present approach may represent a viable alternative to quantum error correction or entanglement distillation.