Two-qubit logic between distant spins in silicon
arXiv:2310.16805 · doi:10.1038/s41567-024-02694-8
Abstract
Direct interactions between quantum particles naturally fall off with distance. For future-proof qubit architectures, however, it is important to avail of interaction mechanisms on different length scales. In this work, we utilize a superconducting resonator to facilitate a coherent interaction between two semiconductor spin qubits 250 m apart. This separation is several orders of magnitude larger than for the commonly employed direct interaction mechanisms in this platform. We operate the system in a regime where the resonator mediates a spin-spin coupling through virtual photons. We report anti-phase oscillations of the populations of the two spins with controllable frequency. The observations are consistent with iSWAP oscillations and ten nanosecond entangling operations. These results hold promise for scalable networks of spin qubit modules on a chip.
17 pages, 9 figures
References in corpus (12)
- Coupling Superconducting Qubits via a Cavity Bus
- Coherent quantum state storage and transfer between two phase qubits via a resonant cavity
- Electrically driven single electron spin resonance in a slanting Zeeman field
- Demonstration of Entanglement of Electrostatically Coupled Singlet-Triplet Qubits
- Strong Coupling of a Single Electron in Silicon to a Microwave Photon
- Rapid high-fidelity gate-based spin read-out in silicon
- Quantum dots for photonic quantum information technology
- Strong coupling of a spin qubit to a superconducting stripline cavity
- Ultra-long distance interaction between spin qubits
- Input-output theory for spin-photon coupling in Si double quantum dots
- On-chip microwave filters for high-impedance resonators with gate-defined quantum dots
- Coherent microwave, optical, and mechanical quantum control of spin qubits in diamond
Cited by in corpus (21)
- High-fidelity single-spin shuttling in silicon
- Hybrid Oscillator-Qubit Quantum Processors: Instruction Set Architectures, Abstract Machine Models, and Applications
- Strong Charge-Photon Coupling in Planar Germanium Enabled by Granular Aluminium Superinductors
- Single-step high-fidelity three-qubit gates by anisotropic chiral interactions
- Unifying Floquet theory of longitudinal and dispersive readout
- Microsecond-lived quantum states in a carbon-based circuit driven by cavity photons
- A thermal-noise-resilient microwave quantum network traversing 4 K
- Remote Cooling of Spin-ensembles through a Spin-mechanical Hybrid Interface
- Parametric longitudinal coupling of a semiconductor charge qubit and a RF resonator
- On the Impact of Classical and Quantum Communication Networks Upon Modular Quantum Computing Architecture System Performance
- Interplay of Zeeman Splitting and Tunnel Coupling in Coherent Spin Qubit Shuttling
- Electrical Interconnects for Silicon Spin Qubits
- Variability of hole spin qubits in planar Germanium
- Highly Tunable Two-Qubit Interactions in Si/SiGe Quantum Dots by Interchanging the Roles of Qubit-Defining Gates
- Parametric Drive of a Double Quantum Dot in a Cavity
- Ultrastrong light-matter coupling in near-field coupled split-ring resonators revealed by photocurrent spectroscopy
- Photon-mediated entanglement between spin qubits beyond the dispersive regime
- Nanoscale stray fields from micromagnets for optimal spin qubit architecture
- Spin-photon coupling using circular double quantum dots
- Sweet-spot protection of hole spins in sparse arrays via spin-dependent magnetotunneling
- Switchable spin-photon coupling with hole spins in single-quantum dots