科研之友
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摘要
A frequency-coded quantum key distribution scheme, what we propose here, is that using encoded qubit in different frequency of a photon in four kinds of states. These states satisfy requirements of BB84 protocol and could be produced with the recent advances in technology. Comparing with the scheme proposed in [Bloch et al., Opt. Lett. 32 (2007) 301], our scheme has no intrinsic deficiency that the measurement of one kind of the states will get wrong result with a little probability, and is a perfect BB84 protocol. The characters and feasibility of the scheme are discussed in detail.
- 出版日期2008-9-15
- 单位中国科学技术大学
