• Rapid Communication

Experimental demonstration of a Hadamard gate for coherent state qubits

Anders Tipsmark, Ruifang Dong, Amine Laghaout, Petr Marek, Miroslav Ježek, and Ulrik L. Andersen
Phys. Rev. A 84, 050301(R) – Published 8 November 2011

Abstract

We discuss and make an experimental test of a probabilistic Hadamard gate for coherent state qubits. The scheme is based on linear optical components, nonclassical resources, and the joint projective action of a photon counter and a homodyne detector. We experimentally characterize the gate for the coherent states of the computational basis by full tomographic reconstruction of the transformed output states. Based on the parameters of the experiment, we simulate the fidelity for all coherent state qubits on the Bloch sphere.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 4 July 2011

DOI:https://doi.org/10.1103/PhysRevA.84.050301

©2011 American Physical Society

Authors & Affiliations

Anders Tipsmark1,*, Ruifang Dong2,1, Amine Laghaout1, Petr Marek3, Miroslav Ježek3,1, and Ulrik L. Andersen1

  • 1Department of Physics, Technical University of Denmark, Fysikvej, DK-2800 Kgs. Lyngby, Denmark
  • 2Quantum Frequency Standards Division, National Time Service Center (NTSC), Chinese Academy of Sciences, 710600 Lintong, Shaanxi, China
  • 3Department of Optics, Palacký University, 17. listopadu 12, CZ-77146 Olomouc, Czech Republic

  • *Corresponding author: anders.tipsmark@fysik.dtu.dk

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 84, Iss. 5 — November 2011

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×