|
| related topics |
| {states, state, optimal} |
| {state, phys, rev} |
| {state, states, entangled} |
| {qubit, qubits, gate} |
| {information, entropy, channel} |
| {phase, path, phys} |
|
Quantum cloning of identical mixed qubits
H. Fan, B. Y. Liu, K. J. Shi
abstract: Quantum cloning of two identical mixed qubits $\rho \otimes \rho $ is
studied. We propose the quantum cloning transformations not only for the
triplet (symmetric) states but also for the singlet (antisymmetric) state. We
can copy these two identical mixed qubits to M (M>2) copies. This quantum
cloning machine is optimal in the sense that the shrinking factor between the
input and the output single qubit achieves the upper bound. The result shows
that we can copy two identical mixed qubits with the same quality as that of
two identical pure states.
- oai_identifier:
- oai:arXiv.org:quant-ph/0601017
- categories:
- quant-ph
- comments:
- 4 pages,references added
- arxiv_id:
- quant-ph/0601017
- journal_ref:
- Quantum Inf. Comput. 7, 551 (2007).
- created:
- 2006-01-03
- updated:
- 2007-01-16
Full article ▸
|
|
| related documents |
| 0208080v2 |
| 0602112v1 |
| 9712019v3 |
| 9911086v3 |
| 0305117v3 |
| 0309161v1 |
| 0004071v2 |
| 0410054v1 |
| 0603168v1 |
| 0201097v1 |
| 0308089v2 |
| 0001091v5 |
| 0502103v2 |
| 9811036v1 |
| 9701028v1 |
| 0610196v2 |
| 0509100v3 |
| 9804001v1 |
| 0605041v4 |
| 0610058v2 |
| 0308008v2 |
| 9804064v1 |
| 0504016v2 |
| 0607105v2 |
| 0107024v1 |
|