On a formulation of qubits in quantum field theory. (English) Zbl 1255.81085
Summary: Qubits have been designed in the framework of quantum mechanics. Attempts to formulate the problem in the language of quantum field theory have been proposed already. In this short Letter we refine the meaning of qubits within the framework of quantum field theory. We show that the notion of gauge invariance naturally leads to a generalization of qubits to QFTbits which are then the fundamental carriers of information from the quantum field theoretical point of view. The goal of this Letter is to stress the availability of such a generalized concept of QFTbits.
MSC:
| 81P45 | Quantum information, communication, networks (quantum-theoretic aspects) |
| 81T13 | Yang-Mills and other gauge theories in quantum field theory |
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