Work

Quantum computation by communication

Year: 2006

Type: article

Abstract: We present here a new approach to scalable quantum computing—a 'qubus computer'—which realizes qubit measurement and quantum gates through interacting qubits with a quantum communication bus mode. The qubits could be 'static' matter qubits or 'flying' optical qubits, but the scheme we focus on here is particularly suited to matter qubits. There is no requirement for direct interaction between the qubits. Universal two-qubit quantum gates may be effected by schemes which involve measurement of the bus mode, or by schemes where the bus disentangles automatically and no measurement is needed. In effect, the approach integrates together qubit degrees of freedom for computation with quantum continuous variables for communication and interaction.

Source: New Journal of Physics

DOI: 10.1088/1367-2630/8/2/030

Authors: T P Spiller, Kae Nemoto, Samuel L Braunstein, W J Munro, P van Loock, G J Milburn

Institutions: Hewlett-Packard (United Kingdom), National Institute of Informatics, University of York, The University of Queensland

Language: English

Topic: Quantum Information and Cryptography

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,610

Funders: Engineering and Physical Sciences Research Council, Japan Society for the Promotion of Science