Quantum copying can increase the practically available information

Physical Review A - Atomic, Molecular, and Optical Physics

Volumn 62, Issue 4, 2000, Pages 042304-042301

  Deuar, P ^a   Munro, W J ^a  

^a UNIVERSITY OF QUEENSLAND   (Australia)

Author keywords

[No Author keywords available]

Indexed keywords

LOGIC CIRCUITS; LOGIC GATES; MATRIX ALGEBRA; PHOTODETECTORS; PHOTONS; PROBABILITY; VACUUM;

QUANTUM COPYING DEVICE; SINGLE CONTROLLED NOT GATES; SINGLE PHOTON DETECTION;

QUANTUM THEORY;

EID: 0034295628     PISSN: 10502947     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (10)

1. P. Deuar and W. J. Munro, Phys. Rev. A 61, 010306(R) (2000).
2. H. Barnum, C. M. Caves, C. A. Fuchs, R. Jozsa, and B. Schumacher, Phys. Rev. Lett. 76, 2818 (1996).
3. K. Kraus, States, Effects, and Operations: Fundamental Notions of Quantum Theory (Springer, Berlin, 1983).
4. C. M. Caves and P. D. Drummond, Rev. Mod. Phys. 66, 481 (1994).
5. V. Bužek and M. Hillery, Phys. Rev. A 54, 1844 (1996).
6. C. E. Shannon, Bell Syst. Tech. J. 27, 379 (1948).
7. C. E. Shannon, Bell Syst. Tech. J. 27, 623 (1948).
8. M. J. W. Hall, Phys. Rev. A 55, 100 (1997).
9. P. Deuar and W. J. Munro, Phys. Rev. A 61, 062304 (2000).
10. For high detector efficiencies η, when dark counts occur, photon default output upon failure to copy (μ= 1) may be more desirable than vacuum.