```
Lamoureux, L.-P., Cerf, N. J., Bechmann-Pasquinucci, H., UCCI.IT, via Olmo 26, I-23888 Rovagnate, Gisin, N., and Macchiavello, C.
```*Reduced randomness in quantum cryptography with sequences of qubits encoded in the same basis*. United States: N. p., 2006.
Web. doi:10.1103/PHYSREVA.73.0.

```
Lamoureux, L.-P., Cerf, N. J., Bechmann-Pasquinucci, H., UCCI.IT, via Olmo 26, I-23888 Rovagnate, Gisin, N., & Macchiavello, C.
```*Reduced randomness in quantum cryptography with sequences of qubits encoded in the same basis*. United States. doi:10.1103/PHYSREVA.73.0.

```
Lamoureux, L.-P., Cerf, N. J., Bechmann-Pasquinucci, H., UCCI.IT, via Olmo 26, I-23888 Rovagnate, Gisin, N., and Macchiavello, C. Wed .
"Reduced randomness in quantum cryptography with sequences of qubits encoded in the same basis". United States.
doi:10.1103/PHYSREVA.73.0.
```

```
@article{osti_20786853,
```

title = {Reduced randomness in quantum cryptography with sequences of qubits encoded in the same basis},

author = {Lamoureux, L.-P. and Cerf, N. J. and Bechmann-Pasquinucci, H. and UCCI.IT, via Olmo 26, I-23888 Rovagnate and Gisin, N. and Macchiavello, C.},

abstractNote = {We consider the cloning of sequences of qubits prepared in the states used in the BB84 or six-state quantum cryptography protocol, and show that the single-qubit fidelity is unaffected even if entire sequences of qubits are prepared in the same basis. This result is only valid provided that the sequences are much shorter than the total key. It is of great importance for practical quantum cryptosystems because it reduces the need for high-speed random number generation without impairing on the security against finite-size cloning attacks.},

doi = {10.1103/PHYSREVA.73.0},

journal = {Physical Review. A},

number = 3,

volume = 73,

place = {United States},

year = {Wed Mar 15 00:00:00 EST 2006},

month = {Wed Mar 15 00:00:00 EST 2006}

}