Entangling distant resonant exchange qubits via circuit quantum electrodynamics

Abstract

We investigate a hybrid quantum system consisting of spatially separated resonant exchange qubits, defined in three-electron semiconductor triple quantum dots, that are coupled via a superconducting transmission line resonator. Drawing on methods from circuit quantum electrodynamics and Hartmann-Hahn double resonance techniques, we analyze three specific approaches for implementing resonator-mediated two-qubit entangling gates in both dispersive and resonant regimes of interaction. We calculate entangling gate fidelities as well as the rate of relaxation via phonons for resonant exchange qubits in silicon triple dots and show that such an implementation is particularly well-suited to achieving the strong coupling regime. Our approach combines the favorable coherence properties of encoded spin qubits in silicon with the rapid and robust long-range entanglement provided by circuit QED systems.

16 pages, 8 figures

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Cited by in corpus (39)

• Semiconductor Spin Qubits
• Coherent spin-qubit photon coupling
• Superconductor-semiconductor hybrid cavity quantum electrodynamics
• Coherent spin-spin coupling mediated by virtual microwave photons
• Three-electron spin qubits
• Optimized cavity-mediated dispersive two-qubit gates between spin qubits
• Cavity QED with hybrid nanocircuits: from atomic-like physics to condensed matter phenomena
• Strong coupling between an electron in a quantum dot circuit and a photon in a cavity
• Coupling a single electron spin to a microwave resonator: Controlling transverse and longitudinal couplings
• Coherent long-distance spin-qubit-transmon coupling
• Negative spin exchange in a multielectron quantum dot
• Symmetric Operation of the Resonant Exchange Qubit
• A quadrupolar exchange-only spin qubit
• Long-distance entangling gates between quantum dot spins mediated by a superconducting resonator
• Spin of a multielectron quantum dot and its interaction with a neighboring electron
• Hybrid superconductor-semiconductor systems for quantum technology
• High-Fidelity Hot Gates for Generic Spin-Resonator Systems
• Quantum-limited measurement of spin qubits via curvature coupling to a cavity
• Long-range entanglement for spin qubits via quantum Hall edge modes
• Resonant Exchange Operation in Triple-Quantum-Dot Qubits for Spin-Photon Transduction
• Generating Entanglement by Quantum Resetting
• Topology detection in cavity QED
• Enhancing the dipolar coupling of a $S$-$T_0$ qubit with a transverse sweet spot
• Quantum battery based on dipole-dipole interaction and external driving field
• Modulated longitudinal gates on encoded spin-qubits via curvature couplings to a superconducting cavity
• Highly tunable exchange-only singlet-only qubit in a GaAs triple quantum dot
• Cavity-mediated entanglement of parametrically driven spin qubits via sidebands
• Robust photon-mediated entangling gates between quantum dot spin qubits
• Mediator assisted cooling in quantum annealing
• Generation of Schrödinger cat states through photon-assisted Landau-Zener-Stückelberg interferometry
• Democratizing Spin Qubits
• Probing the Jaynes-Cummings Ladder with Spin Circuit Quantum Electrodynamics
• Coupling two charge qubits via a superconducting resonator operating in the resonant and dispersive regimes
• Implementation of geometric quantum gates on microwave-driven semiconductor charge qubits
• Phonon-induced decoherence of a charge quadrupole qubit
• Long-range two-hybrid-qubit gates mediated by a microwave cavity with red sidebands
• Leakage and dephasing in ${}^{28}$Si-based exchange-only spin qubits
• Universal singlet-triplet qubits implemented near the transverse sweet spot
• Switchable spin-photon coupling with hole spins in single-quantum dots