Title :
Optimal dimensionality for quantum cryptography
Author :
Horoshko, D.B. ; Kilin, S.Ya.
Author_Institution :
Inst. of Phys., Belarus Nat. Acad., Minsk, Belarus
Abstract :
Two protocols are compared for sharing between Alice and Bob a cryptographic key composed from quarts. The first protocol uses a ququart (4-level system) prepared in one of 5 mutually biased bases. The second one uses two independent qubits, each being prepared in one of 3 mutually unbiased bases. Information gained by the eavesdropper Eve is calculated, suggesting that she uses an asymmetric cloner for cloning individual systems.
Keywords :
protocols; quantum computing; quantum cryptography; asymmetric cloner; cryptographic key; eavesdropper; protocol; quarts; qubits; ququart; Information processing; Information theory; Laboratories; Noise generators; Optimized production technology; Performance analysis; Quantum entanglement; Quantum mechanics;
Conference_Titel :
Quantum Electronics Conference, 2003. EQEC '03. European
Print_ISBN :
0-7803-7733-8
DOI :
10.1109/EQEC.2003.1314275
