Cavity-mediated entanglement of parametrically driven spin qubits via sidebands
arXiv:2307.06067 · doi:10.1103/PRXQuantum.5.020339
Abstract
We consider a pair of quantum dot-based spin qubits that interact via microwave photons in a superconducting cavity, and that are also parametrically driven by separate external electric fields. For this system, we formulate a model for spin qubit entanglement in the presence of mutually off-resonant qubit and cavity frequencies. We show that the sidebands generated via the driving fields enable highly tunable qubit-qubit entanglement using only ac control and without requiring the qubit and cavity frequencies to be tuned into simultaneous resonance. The model we derive can be mapped to a variety of qubit types, including detuning-driven one-electron spin qubits in double quantum dots and three-electron resonant exchange qubits in triple quantum dots. The high degree of nonlinearity inherent in spin qubits renders these systems particularly favorable for parametric drive-activated entanglement. We determine multiple common resonance conditions for the two driven qubits and the cavity and identify experimentally relevant parameter regimes that enable the implementation of entangling gates with suppressed sensitivity to cavity photon occupation and decay. The parametrically driven sideband resonance approach we describe provides a promising route toward scalability and modularity in spin-based quantum information processing through drive-enabled tunability that can also be implemented in micromagnet-free electron and hole systems for spin-photon coupling.
21 pages, 3 figures
References in corpus (23)
- Quantum Computing
- Charge insensitive qubit design derived from the Cooper pair box
- Coupling Superconducting Qubits via a Cavity Bus
- An addressable quantum dot qubit with fault-tolerant control fidelity
- Simple pulses for elimination of leakage in weakly nonlinear qubits
- Quantum information processing with circuit quantum electrodynamics
- Coherent quantum state storage and transfer between two phase qubits via a resonant cavity
- Distributed Quantum Computation Based-on Small Quantum Registers
- Analytic control methods for high fidelity unitary operations in a weakly nonlinear oscillator
- Using Sideband Transitions for Two-Qubit Operations in Superconducting Circuits
- Ultra-long distance interaction between spin qubits
- High-Fidelity, Frequency-Flexible Two-Qubit Fluxonium Gates with a Transmon Coupler
- Parametric coupling for superconducting qubits
- Sideband Transitions and Two-Tone Spectroscopy of a Superconducting Qubit Strongly Coupled to an On-Chip Cavity
- Life after charge noise: recent results with transmon qubits
- Tunable coupling scheme for flux qubits at the optimal point
- First-order sidebands in circuit QED using qubit frequency modulation
- Input-output theory for spin-photon coupling in Si double quantum dots
- Relaxing Hardware Requirements for Surface Code Circuits using Time-dynamics
- Coupling of three-spin qubits to their electric environment
- The asymmetric resonant exchange qubit under the influence of electrical noise
- State leakage during fast decay and control of a superconducting transmon qubit
- Developing high-impedance superconducting resonators and on-chip filters for semiconductor quantum dot circuit quantum electrodynamics