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The impossibility of perfectly copying (or cloning) an arbitrary quantum state is one of the basic rules governing the physics of quantum systems. The processes that perform the optimal approximate cloning have been found in many cases.
Valerio Scarani, Nicolas Gisin
exaly +7 more sources
Controlled Secret Sharing Protocol using a Quantum Cloning Circuit [PDF]
We demonstrate the possibility of controlling the success probability of a secret sharing protocol using a quantum cloning circuit. The cloning circuit is used to clone the qubits containing the encoded information and {\em en route} to the intended ...
Adhikari, Satyabrata+5 more
core +2 more sources
Optimal Non-Universally Covariant Cloning [PDF]
We consider non-universal cloning maps, namely cloning transformations which are covariant under a proper subgroup G of the universal unitary group U(d), where d is the dimension of the Hilbert space H of the system to be cloned. We give a general method
A. Jamiolkowski+23 more
core +3 more sources
To clone or not to clone ? [PDF]
Van Leuven Fred. To clone or not to clone ?. In: Bulletin de la Classe des sciences, tome 13, n°1-6, 2002. pp. 225-226.
openaire +3 more sources
Exchanging mutable data objects with untrusted code is a delicate matter because of the risk of creating a data space that is accessible by an attacker. Consequently, secure programming guidelines for Java stress the importance of using defensive copying before accepting or handing out references to an internal mutable object.
Jensen, Thomas+2 more
openaire +6 more sources
The public project's sequencing strategy involved producing a map of the human genome, and then pinning sequence to it. This helps to avoid errors in the sequence, especially in repetitive regions.
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Quantum Cloning Machines and the Applications [PDF]
No-cloning theorem is fundamental for quantum mechanics and for quantum information science that states an unknown quantum state cannot be cloned perfectly. However, we can try to clone a quantum state approximately with the optimal fidelity, or instead,
Fan, Heng+6 more
core +1 more source
We investigate several classes of state-dependent quantum cloners for three-level systems. These cloners optimally duplicate some of the four maximally-conjugate bases with an equal fidelity, thereby extending the phase-covariant qubit cloner to qutrits.
Cerf, Nicolas, Durt, T., Gisin, Nicolas
openaire +5 more sources
Reproductive Cloning: Can Cloning Harm the Clone? [PDF]
Since the creation of Dolly the sheep was reported in February 1997, the possibility of a cloned child has elicited powerful declarations of condemnation. A widely held view is that cloning a human being would be immoral and ought to be prohibited by legislation.
openaire +5 more sources
Information-theoretic limitations on approximate quantum cloning and broadcasting [PDF]
We prove new quantitative limitations on any approximate simultaneous cloning or broadcasting of mixed states. The results are based on information-theoretic (entropic) considerations and generalize the well known no-cloning and no-broadcasting theorems.
Lemm, Marius, Wilde, Mark M.
core +4 more sources