Implementations of more general solid-state (SWAP)${}^{1/m}$ and controlled-(swap)${}^{1/m}$ gates

Abstract

Universal quantum gates are the core elements in quantum information processing. We design two schemes to realize more general (SWAP)${}^{1/m}$ and controlled--(swap)${}^{1/m}$ gates (for integer $m\ge 1$) by directing flying single photons to solid--state quantum dots. The parameter $m$ is easily controlled by adjusting two quarter--wave plates and one half--wave plate. Additional computational qubits are not required to construct the two gates. Evaluations of the gates indicate that our proposals are feasible with current experimental technology.

20 page,7 figures

References in corpus (18)

• Coherent control of a single electron spin with electric fields
• An addressable quantum dot qubit with fault-tolerant control fidelity
• Strongly Correlated Two-Photon Transport in One-Dimensional Waveguide Coupled to A Two-Level System
• Theory of single-photon transport in a single-mode waveguide coupled to a cavity containing a two-level atom
• A Quantum Gate between a Flying Optical Photon and a Single Trapped Atom
• Giant optical Faraday rotation induced by a single electron spin in a quantum dot: Applications to entangling remote spins via a single photon
• CNOT and Bell-state analysis in the weak-coupling cavity QED regime
• Quantum information processing with a single photon by input-output process regarding low-Q cavities
• Charge detection enables free-electron quantum computation
• Loss-resistant state teleportation and entanglement swapping using a quantum-dot spin in an optical microcavity
• Quantum control of a spin qubit coupled to a photonic crystal cavity
• Single-photon logic gates using minimal resources
• Linear optics quantum Toffoli and Fredkin gates
• Macroscopic Polarization Rotation Induced by a Single Spin
• Methods for linear optical quantum Fredkin gate
• Linear optical Fredkin gate based on partial-SWAP gate
• Entangling characterization of (SWAP)1/m and Controlled unitary gates
• Implementations of two-photon four-qubit Toffoli and Fredkin gates assisted by nitrogen-vacancy centers

Cited by in corpus (1)

• Implementing two-photon three-degree-of-freedom hyper-parallel controlled phase flip gate through cavity-assisted interactions