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Trapped Ion Quantum Computing

Quantum controlled-Z gate for weakly interacting qubits

arXiv
Authors: M. Micuda, R. Starek, I. Straka, M. Mikova, M. Dusek, M. Jezek, R. Filip, J. Fiurasek

Year

2015

Paper ID

27166

Status

Preprint

Abstract Read

~2 min

Abstract Words

105

Citations

N/A

Abstract

We propose and experimentally demonstrate a scheme for implementation of a maximally entangling quantum controlled-Z gate between two weakly interacting systems. We conditionally enhance the interqubit coupling by quantum interference. Both before and after the interqubit interaction, one of the qubits is coherently coupled to an auxiliary quantum system, and finally it is projected back onto qubit subspace. We experimentally verify the practical feasibility of this technique by using a linear optical setup with weak interferometric coupling between single-photon qubits. Our procedure is universally applicable to a wide range of physical platforms including hybrid systems such as atomic clouds or optomechanical oscillators coupled to light.

Why This Paper Matters

  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2015 reference point for readers tracking recent quantum research.
  • We propose and experimentally demonstrate a scheme for implementation of a maximally entangling quantum controlled-Z gate between two weakly interacting systems.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1509.05682 [2] arXiv https://arxiv.org/abs/1509.05682 [3] Publisher https://arxiv.org/abs/1509.05682

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