Germanium Vacancy in Diamond Quantum Memory Exceeding 20 ms

Abstract

Negatively charged group-IV defects in diamond show great potential as quantum network nodes due to their efficient spin-photon interface. However, reaching sufficiently long coherence times remains a challenge. In this work, we demonstrate coherent control of germanium vacancy center (GeV) at millikelvin temperatures and extend its coherence time by several orders of magnitude to more than 20 ms. We model the magnetic and amplitude noise as an Ornstein-Uhlenbeck process, reproducing the experimental results well. The utilized method paves the way to optimized coherence times of group-IV defects in various experimental conditions and their successful applications in quantum technologies

References in corpus (34)

• The Quantum Internet
• Quantum sensing
• Dynamical Decoupling of Open Quantum Systems
• Sensitivity Optimization for NV-Diamond Magnetometry
• Single-Photon Switching and Entanglement of Solid-State Qubits in an Integrated Nanophotonic System
• Universal dynamical decoupling of a single solid-state spin from a spin bath
• Solid-state electronic spin coherence time approaching one second
• A quantum network of clocks
• Large Scale Modular Quantum Computer Architecture with Atomic Memory and Photonic Interconnects
• Silicon-Vacancy Spin Qubit in Diamond: A Quantum Memory Exceeding 10 ms with Single-Shot State Readout
• Longer-Baseline Telescopes Using Quantum Repeaters
• Quantum Nonlinear Optics with a Germanium-Vacancy Color Center in a Nanoscale Diamond Waveguide
• Quantum networks based on color centers in diamond
• Strain engineering of the silicon-vacancy center in diamond
• Fault-tolerant quantum repeaters with minimal physical resources, and implementations based on single photon emitters
• Robust dynamical decoupling for quantum computing and quantum memory
• Electron-phonon processes of the silicon-vacancy centre in diamond
• Quantum network nodes based on diamond qubits with an efficient nanophotonic interface
• Robust dynamical decoupling
• Robust multi-qubit quantum network node with integrated error detection
• An integrated nanophotonic quantum register based on silicon-vacancy spins in diamond
• Coherent control of the silicon-vacancy spin in diamond
• Optical and microwave control of germanium-vacancy center spins in diamond
• All-optical control of the silicon-vacancy spin in diamond at millikelvin temperatures
• Arbitrarily Accurate Pulse Sequences for Robust Dynamical Decoupling
• Optimal pulse spacing for dynamical decoupling in the presence of a purely-dephasing spin-bath
• Spurious harmonic response of multipulse quantum sensing sequences
• Ultra-sensitive Diamond Magnetometry Using Optimal Dynamic Decoupling
• Narrow-linewidth tin-vacancy centers in a diamond waveguide
• Spin coherence lifetime extension in Tm${}^{3+}$:YAG through dynamical decoupling
• Fully robust qubit in atomic and molecular three-level systems
• Efficient and robust signal sensing by sequences of adiabatic chirped pulses
• Quantum control and sensing of nuclear spins by electron spins under power limitations
• Rephasing efficiency of sequences of phased pulses in spin-echo and light-storage experiments

Cited by in corpus (15)

• Coherent microwave, optical, and mechanical quantum control of spin qubits in diamond
• Robust Nuclear Spin Polarization via Ground-State Level Anti-Crossing of Boron Vacancy Defects in Hexagonal Boron Nitride
• Coherent Control of a Long-Lived Nuclear Memory Spin in a Germanium-Vacancy Multi-Qubit Node
• High-Fidelity Electron Spin Gates for Scaling Diamond Quantum Register
• Efficient Microwave Spin Control of Negatively Charged Group-IV Color Centers in Diamond
• The impact of strain on the GeV-color center in diamond
• Control of solid-state nuclear spin qubits using an electron spin-1/2
• SUPER and femtosecond spin-conserving coherent excitation of a tin-vacancy color center in diamond
• Magneto-optical properties of Group-IV--vacancy centers in diamond upon hydrostatic pressure
• A Concise Primer on Solid-State Quantum Emitters
• High-fidelity control of a ${}^{13}$C nuclear spin coupled to a tin-vacancy center in diamond
• Optical probing of phononic properties of a tin-vacancy color center in diamond
• Efficiency of optimal control for noisy spin qubits in diamond
• Quantum Orbital-State Control of a Neutral Nitrogen-Vacancy Center at Millikelvin Temperatures
• Quantifying electron-nuclear spin entanglement dynamics in central-spin systems using one-tangles