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Fault-Tolerant Linear Optical Quantum Computing with Small-Amplitude Coherent States

Year: 2008

Type: article

Abstract: Quantum computing using two coherent states as a qubit basis is a proposed alternative architecture with lower overheads but has been questioned as a practical way of performing quantum computing due to the fragility of diagonal states with large coherent amplitudes. We show that using error correction only small amplitudes (alpha>1.2) are required for fault-tolerant quantum computing. We study fault tolerance under the effects of small amplitudes and loss using a Monte Carlo simulation. The first encoding level resources are orders of magnitude lower than the best single photon scheme.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.100.030503

Authors: A. P. Lund, T. C. Ralph, H. L. Haselgrove

Institutions: The University of Queensland, Defence Science and Technology Group, UNSW Sydney, Australian Defence Force Academy

Language: English

Topic: Quantum Computing Algorithms and Architecture

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W2034518762

FWCI: 13.21

Cites: 24

Cited by: 296

Related to: 10