Control of solid-state nuclear spin qubits using an electron spin-1/2
arXiv:2409.08977 · doi:10.1103/PhysRevX.15.021011
Abstract
Solid-state quantum registers consisting of optically active electron spins with nearby nuclear spins are promising building blocks for future quantum technologies. For electron spin-1 registers, dynamical decoupling (DD) quantum gates have been developed that enable the precise control of multiple nuclear spin qubits. However, for the important class of electron spin-1/2 systems, this control method suffers from intrinsic selectivity limitations, resulting in reduced nuclear spin gate fidelities. Here we demonstrate improved control of single nuclear spins by an electron spin-1/2 using Dynamically Decoupled Radio Frequency (DDRF) gates. We make use of the electron spin-1/2 of a diamond tin-vacancy center, showing high-fidelity single-qubit gates, single-shot readout, and spin coherence beyond a millisecond. The DD control is used as a benchmark to observe and control a single carbon-13 nuclear spin. Using the DDRF control method, we demonstrate improved control on that spin. In addition, we find and control an additional nuclear spin that is insensitive to the DD control method. Using these DDRF gates, we show entanglement between the electron and the nuclear spin with 72(3)% state fidelity. Our extensive simulations indicate that DDRF gate fidelities well in excess are feasible. Finally, we employ time-resolved photon detection during readout to quantify the hyperfine coupling for the electron's optically excited state. Our work provides key insights into the challenges and opportunities for nuclear spin control in electron spin-1/2 systems, opening the door to multi-qubit experiments on these promising qubit platforms.
References in corpus (50)
- QuTiP: An open-source Python framework for the dynamics of open quantum systems
- Universal dynamical decoupling of a single solid-state spin from a spin bath
- High-fidelity projective readout of a solid-state spin quantum register
- Keeping a Quantum Bit Alive by Optimized -Pulse Sequences
- Realization of a multi-node quantum network of remote solid-state qubits
- Experimental demonstration of memory-enhanced quantum communication
- Isolated electron spins in silicon carbide with millisecond-coherence times
- Silicon-Vacancy Spin Qubit in Diamond: A Quantum Memory Exceeding 10 ms with Single-Shot State Readout
- A 10-qubit solid-state spin register with quantum memory up to one minute
- Universal control and error correction in multi-qubit spin registers in diamond
- Large-scale integration of near-indistinguishable artificial atoms in hybrid photonic circuits
- Decoherence-protected quantum gates for a hybrid solid-state spin register
- Tin-Vacancy Quantum Emitters in Diamond
- Isolating and enhancing the emission of single erbium ions using a silicon nanophotonic cavity
- Detection and control of individual nuclear spins using a weakly coupled electron spin
- Entanglement of Nanophotonic Quantum Memory Nodes in a Telecom Network
- Quantum networks based on color centers in diamond
- Atomic-scale imaging of a 27-nuclear-spin cluster using a single-spin quantum sensor
- Sensing remote nuclear spins
- Repeated quantum error correction on a continuously encoded qubit by real-time feedback
- Coherent control and single-shot readout of a rare-earth ion embedded in a nanophotonic cavity
- Fault-tolerant operation of a logical qubit in a diamond quantum processor
- Quantum network nodes based on diamond qubits with an efficient nanophotonic interface
- Integrated quantum photonics with silicon carbide: challenges and prospects
- Sensing distant nuclear spins with a single electron spin
- Robust multi-qubit quantum network node with integrated error detection
- An integrated nanophotonic quantum register based on silicon-vacancy spins in diamond
- Transform-limited photons from a coherent tin-vacancy spin in diamond
- Nanofabricated and integrated colour centres in silicon carbide with high-coherence spin-optical properties
- Spectroscopic Investigations of Negatively Charged Tin-Vacancy Centres in Diamond
- Comparison of dynamical decoupling protocols for a nitrogen-vacancy center in diamond
- Single-photon-emitting optical centers in diamond fabricated upon Sn implantation
- A Quantum Photonic Interface for Tin-Vacancy Centers in Diamond
- Metropolitan-scale heralded entanglement of solid-state qubits
- Robust Dynamical Decoupling Sequences for Individual Nuclear Spin Addressing
- Quantum control of the tin-vacancy spin qubit in diamond
- Narrow-linewidth tin-vacancy centers in a diamond waveguide
- Tutorial: Remote entanglement protocols for stationary qubits with photonic interfaces
- Microwave Spin Control of a Tin-Vacancy Qubit in Diamond
- Spectral alignment of single-photon emitters in diamond using strain gradient
- Mapping a 50-spin-qubit network through correlated sensing
- Entangling remote qubits using the single-photon protocol: an in-depth theoretical and experimental study
- Non-flipping 13C spins in NV diamond: Hyperfine and Spatial Characteristics by DFT Simulation of the C510[NV]H252 Cluster
- Germanium Vacancy in Diamond Quantum Memory Exceeding 20 ms
- Coherent control of a nuclear spin via interactions with a rare-earth ion in the solid-state
- Nonlinear Quantum Photonics with a Tin-Vacancy Center Coupled to a One-Dimensional Diamond Waveguide
- Single-Shot Readout and Weak Measurement of a Tin-Vacancy Qubit in Diamond
- Heralded initialization of charge state and optical transition frequency of diamond tin-vacancy centers
- Coherent Control of a Long-Lived Nuclear Memory Spin in a Germanium-Vacancy Multi-Qubit Node
- Improved Electron-Nuclear Quantum Gates for Spin Sensing and Control