Contextual, Optimal and Universal Realization of the Quantum Cloning Machine and of the NOT gate
arXiv:quant-ph/0312124 · doi:10.1103/PhysRevLett.92.067901
Abstract
A simultaneous realization of the Universal Optimal Quantum Cloning Machine (UOQCM) and of the Universal-NOT gate by a quantum injected optical parametric amplification (QIOPA), is reported. The two processes, forbidden in their exact form for fundamental quantum limitations, are found universal and optimal, and the measured fidelity F<1 is found close to the limit values evaluated by quantum theory. This work may enlighten the yet little explored interconnections of fundamental axiomatic properties within the deep structure of quantum mechanics.
10 pages, 2 figures
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- Schroedinger Cat: Entanglement test in a Micro-Macroscopic system
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- Multipartite Asymmetric Quantum Cloning
- Quantum cloning in spin networks
- Experimental macroscopic coherence by phase-covariant cloning of a single photon
- Quantum and Classical Data Transmission through Completely Depolarising Channels in a Superposition of Cyclic Orders
- Experimental phase-covariant cloning of polarization states of single photons
- Separating the classical and quantum information via quantum cloning
- Phase-sensitive Manipulations of Squeezed Vacuum Field in an Optical Parametric Amplifier inside an Optical Cavity
- Realization of the 1->3 optimal phase-covariant quantum cloning machine
- Fibre-optics implementation of asymmetric phase-covariant quantum cloner
- Investigating macroscopic quantum superpositions and the quantum-to-classical transition by optical parametric amplification
- Wigner-function theory and decoherence of the quantum-injected optical parametric amplifier
- Relations between cloning and the universal NOT from conservation laws
- Realization of Universal Optimal Quantum Machines by Projective Operators and Stochastic Maps
- Several experimental realizations of symmetric phase-covariant quantum cloner of single-photon qubits
- Realization of a Decoherence-free, Optimally Distinguishable Mesoscopic Quantum Superposition
- Cloning transformations in spin networks without external control
- Non separable Werner states in spontaneous parametric down-conversion
- The nonequilibrium cost of accurate information processing
- Experimental asymmetric phase-covariant quantum cloning of polarization qubits
- A robust one-step catalytic machine for high fidelity anti-cloning and W-state generation in a multi-qubit system
- Cloning and Joint Measurements of Incompatible Components of Spin
- Optimal quantum cloning via spin networks
- Implementation of optimal phase-covariant cloning machines
- Quantum-optical Description of Phase Conjugation of Vector Vortex Beams in Stimulated Parametric Down Conversion
- Can A Universal Quantum Cloner Be Used to Design an Experimentally Feasible Near-Deterministic CNOT Gate ?
- Cloning of Quantum Entanglement
- Optimal multicopy asymmetric Gaussian cloning of coherent states
- Quantum cloning a pair of orthogonally polarized photons with linear optics
- Optimal 1->M universal quantum cloning via spin networks
- Entanglement, EPR correlations and mesoscopic quantum superposition by the high-gain quantum injected parametric amplification
- Extremal asymmetric universal cloning machines
- Experimental reversion of the optimal quantum cloning and flipping processes
- Anomalous resilient to decoherence macroscopic quantum superpositions generated by universally covariant optimal quantum cloning
- Realization of the Optimal Universal Quantum Entangler