PRL 112, 019902 (2014) PHYSICAL REVIEW LETTERS week ending 10 JANUARY 2014 F. Furrer, T. Franz, M. Berta, A. Leverrier, V. B. Scholz, M. Tomamichel, and R. F. Werner (Received 7 November 2013; published 7 January 2014) DOI: 10.1103/PhysRevLett.112.019902 PACS numbers: 03.67.Dd, 03.67.Hk, 99.10.Cd An error in the numerical computation of the key rates secure against coherent attacks resulted in too pessimistic key rates and allowing only symmetric fiber losses up to 6%. The corrected computation shows that losses up to about 23% can be tolerated under the same conditions. The corrected plot for the key rate against coherent attacks updating Fig. 1 of the Letter for now 0%, 10%, and 20% of symmetric losses is given in Fig. 1. The updated plot of Fig. 3 of the Letter comparing the key rates for coherent attacks with the one secure against collective attacks and the optimal asymptotic value can be found in Fig. 2. The error did not affect the computation of the key rate secure against collective attacks. The improved values for the key rates against coherent attacks also affect the conclusion drawn in the Discussion and Outlook section of the Letter. In particular, the following sentences
Physical Review Letters – American Physical Society (APS)
Published: Jan 7, 2014
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