Send to

Choose Destination
Phys Rev Lett. 2008 Jan 25;100(3):030503. Epub 2008 Jan 25.

Fault-tolerant linear optical quantum computing with small-amplitude coherent States.

Author information

Centre for Quantum Computer Technology, Department of Physics, University of Queensland, St. Lucia, QLD 4072, Australia.


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.

Supplemental Content

Full text links

Icon for American Physical Society
Loading ...
Support Center