Circuit Quantum Electrodynamics with a Spin Qubit

Abstract

Circuit quantum electrodynamics allows spatially separated superconducting qubits to interact via a "quantum bus", enabling two-qubit entanglement and the implementation of simple quantum algorithms. We combine the circuit quantum electrodynamics architecture with spin qubits by coupling an InAs nanowire double quantum dot to a superconducting cavity. We drive single spin rotations using electric dipole spin resonance and demonstrate that photons trapped in the cavity are sensitive to single spin dynamics. The hybrid quantum system allows measurements of the spin lifetime and the observation of coherent spin rotations. Our results demonstrate that a spin-cavity coupling strength of 1 MHz is feasible.

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References in corpus (8)

• Driven coherent oscillations of a single electron spin in a quantum dot
• Resolving photon number states in a superconducting circuit
• Coherent quantum state storage and transfer between two phase qubits via a resonant cavity
• Direct Measurement of the Spin-Orbit Interaction in a Two-Electron InAs Nanowire Quantum Dot
• Spin dynamics in InAs-nanowire quantum-dots coupled to a transmission line
• Strong coupling of a spin qubit to a superconducting stripline cavity
• Efficient multiqubit entanglement via a spin-bus
• Introduction of a DC Bias into a High-Q Superconducting Microwave Cavity

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• Development of a broadband reflective T-filter for voltage biasing high-Q superconducting microwave cavities
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• NMR Response of Nuclear Spin Helix in Quantum Wires with Hyperfine and Spin-Orbit Interaction
• Excitation and detection of propagating spin waves at the single magnon level
• Single-electron shell occupation and effective $g$-factor in few-electron nanowire quantum dots
• Electron-photon coupling in Mesoscopic Quantum Electrodynamics