aqora

Simulation of electrical control of a solid-state flying qubit

Seyed Mostafa Akrami

Bulletin of the American Physical SocietyMar 6, 20140 citations

On the control of flying qubits

Wenlong Li, Guofeng Zhang, Re-Bing Wu

AutomaticaJun 25, 202213 citations

All-electrical coherent control of the exciton states in a single quantum dot

A. Boyer de la Giroday, Anthony J. Bennett, Matthew A. Pooley +6 more

We demonstrate high-fidelity reversible transfer of quantum information from the polarization of photons into the spin state of an electron-hole pair in a semiconductor quantum dot. Moreover, spins are electrically manipulated on a subnanosecond time scale, allowing us to coherently control their evolution. By varying the area of the electrical pulse, we demonstrate phase-shift and spin-flip gate operations with near-unity fidelities. Our system constitutes a controllable quantum interface between flying and stationary qubits, an enabling technology for quantum logic in the solid state.We demonstrate high-fidelity reversible transfer of quantum information from the polarization of photons into the spin state of an electron-hole pair in a semiconductor quantum dot. Moreover, spins are electrically manipulated on a subnanosecond time scale, allowing us to coherently control their evolution. By varying the area of the electrical pulse, we demonstrate phase-shift and spin-flip gate operations with near-unity fidelities. Our system constitutes a controllable quantum interface between flying and stationary qubits, an enabling technology for quantum logic in the solid state.

arXiv:1011.2641Physical Review BDec 1, 201034 citations

Solid-state qubits under control

D. V. Averin

NatureApr 1, 199931 citations

Solid‐State Qubit as an On‐Chip Controller for Non‐Classical Field States

Roman V. Zakharov, Olga V. Tikhonova, N. V. Klenov +3 more

Abstract A basic element of a quantum network based on two single‐mode waveguides is proposed with different frequencies connected by a solid‐state qubit. Using a simple example of a possible superconducting implementation, the usefulness of the simplifications used in the general theoretical consideration has been justified. The non‐classical field in a single‐mode with a frequency of is fed to the input of a qubit controller and transformed into a non‐classical field in an output single‐mode with a frequency of . The interface can establish a quantum connection between solid‐state and photonic flying qubits with adjustable pulse shapes and carrier frequencies. This allows quantum information to be transferred to other superconducting or atomic‐based quantum registers or chips. The peculiarities of the wave‐qubit interactions are described, showing how they help to control the quantum state of the non‐classical field. On this basis, the operating principles of solid‐state and flying qubits for the future quantum information platforms are considered.Abstract A basic element of a quantum network based on two single‐mode waveguides is proposed with different frequencies connected by a solid‐state qubit. Using a simple example of a possible superconducting implementation, the usefulness of the simplifications used in the general theoretical consideration has been justified. The non‐classical field in a single‐mode with a frequency of is fed to the input of a qubit controller and transformed into a non‐classical field in an output single‐mode with a frequency of . The interface can establish a quantum connection between solid‐state and photonic flying qubits with adjustable pulse shapes and carrier frequencies. This allows quantum information to be transferred to other superconducting or atomic‐based quantum registers or chips. The peculiarities of the wave‐qubit interactions are described, showing how they help to control the quantum state of the non‐classical field. On this basis, the operating principles of solid‐state and flying qubits for the future quantum information platforms are considered.

Advanced Quantum TechnologiesJul 3, 20248 citations

Theory of control of spin/photon interface for solid-state quantum network

W. Yao, Ren‐Bao Liu, Lu Jeu Sham

With Dot-Cavity-Waveguide coupled system acting as quantum interface for stationary spin qubit and flying photon qubit, we propose and study a controlling scheme for generation or reception of an arbitrarily designated wavepacket of a single-photon.

Quantum Electronics and Laser Science ConferenceDec 10, 20050 citations

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