Scheme for the implementation of a universal quantum cloning machine via cavity-assisted atomic collisions in cavity QED

Abstract

We propose a scheme to implement the $1\to 2$ universal quantum cloning machine of Buzek et.al [Phys. Rev.A 54, 1844(1996)] in the context of cavity QED. The scheme requires cavity-assisted collision processes between atoms, which cross through nonresonant cavity fields in the vacuum states. The cavity fields are only virtually excited to face the decoherence problem. That's why the requirements on the cavity quality factor can be loosened.

to appear in PRA

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Cited by in corpus (8)

• Quantum cloning
• Effective Hamiltonian Theory and Its Applications in Quantum Information
• Quantum Cloning Machines and the Applications
• A robust one-step catalytic machine for high fidelity anti-cloning and W-state generation in a multi-qubit system
• Experimental demonstration of entanglement-enabled universal quantum cloning in a circuit
• Realization of universal quantum cloning with SQUID qubits in a cavity
• Scheme for the implementation of optimal cloning of two pairs of orthogonal states
• Proposal for realization of a Toffoli gate via cavity-assisted collision