Several experimental realizations of symmetric phase-covariant quantum cloners of single-photon qubits

Journal Article · Mon Oct 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.042318· OSTI ID:21020687

Soubusta, Jan; Cernoch, Antonin ^[1]; Bartuskova, Lucie; Fiurasek, Jaromir; Dusek, Miloslav ^[2]

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1. Joint Laboratory of Optics of Palacky University and Institute of Physics of Academy of Sciences of the Czech Republic, 17. listopadu 50A, 779 07 Olomouc (Czech Republic)
2. Department of Optics, Palacky University, 17. listopadu 50, 772 00 Olomouc (Czech Republic)

We compare several optical implementations of phase-covariant cloning machines. The experiments are based on copying of the polarization state of a single photon in bulk optics by a special unbalanced beam splitter or by a balanced beam splitter accompanied by a state filtering. Also the all-fiber-based setup is discussed, where the information is encoded into spatial modes, i.e., the photon can propagate through two optical fibers. Each of the four implementations possesses some advantages and disadvantages that are discussed.

• OSTI ID: 21020687
• Journal Information: Physical Review. A, Vol. 76, Issue 4; Other Information: DOI: 10.1103/PhysRevA.76.042318; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BEAM SPLITTING
COMMUNICATIONS
OPTICAL FIBERS
PHOTONS
POLARIZATION
QUANTUM MECHANICS
QUBITS