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Tightened estimation can improve the key rate of MDI-QKD by more than $100\%$
- Publication Year :
- 2013
-
Abstract
- We present formulas to tightly upper bound the phase-flip errors in decoy state method by using 4 intensities. Our result compressed the bound to about a quarter of known result for MDI-QKD. Based on this, we find that the key rate is improved by more than $100\%$ given weak coherent state sources (WCS), and even more than $200\%$ with the heralded single-photon sources (HSPS).
- Subjects :
- Quantum Physics
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1312.5915
- Document Type :
- Working Paper