Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

Demonstration of a universal one-way quantum quadratic phase gate


van Loock,  Peter
van Loock Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available

Miwa, Y., Yoshikawa, J.-i., van Loock, P., & Furusawa, A. (2009). Demonstration of a universal one-way quantum quadratic phase gate. PHYSICAL REVIEW A, 80(5): 050303. doi:10.1103/PhysRevA.80.050303.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6B9F-D
We demonstrate a quadratic phase gate for one-way quantum computation in the continuous-variable regime. This canonical gate, together with phase-space displacements and Fourier rotations, completes the set of universal gates for realizing any single-mode Gaussian transformation such as arbitrary squeezing. As opposed to previous implementations of measurement-based squeezers, the current gate is fully controlled by the local oscillator phase of the homodyne detector. Verifying this controllability, we give an experimental demonstration of the principles of one-way quantum computation over continuous variables. Moreover, we can observe sub-shot-noise quadrature variances in the output states, confirming that nonclassical states are created through cluster computation.