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Quantum cloning [PDF]

open access: yesReviews of Modern Physics, 2005
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]

open access: yesQuant.Inf.Proc. 13, 2071 (2014), Springer, 2014
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]

open access: yes, 2001
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]

open access: yesBulletin de la Classe des sciences, 2002
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

Secure the Clones [PDF]

open access: yesLogical Methods in Computer Science, 2012
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

Clone by clone by clone [PDF]

open access: yesNature, 2001
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.
openaire   +2 more sources

Quantum Cloning Machines and the Applications [PDF]

open access: yes, 2014
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

Cloning a qutrit [PDF]

open access: yesJournal of Modern Optics, 2002
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]

open access: yesMedical Law Review, 2002
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]

open access: yes, 2017
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

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