Quantum Orbital-State Control of a Neutral Nitrogen-Vacancy Center at Millikelvin Temperatures

Abstract

A neutral nitrogen-vacancy center (NV${}^0$) is promising for realizing strong coupling with a single microwave photon due to its large electric field sensitivity, although it is susceptible to environmental phonon noise at 5 K. Decreasing the temperature to 15 mK results in a tenfold increase in orbital relaxation time compared to that at 5 K. Dynamical decoupling pulses significantly increase the orbital coherence time to around 1.8 $\mu$s, representing a 30-fold improvement compared to that without decoupling pulses. Based on these results, a single NV${}^0$ can reach the strong coupling regime when coupled with a high-impedance microwave resonator, thus opening up the possibility of microwave quantum electrodynamics using a single optically-active defect center in diamond.

References in corpus (16)

• Realization of a multi-node quantum network of remote solid-state qubits
• Circuit Quantum Electrodynamics with a Spin Qubit
• Tin-Vacancy Quantum Emitters in Diamond
• Entanglement of Nanophotonic Quantum Memory Nodes in a Telecom Network
• Quantum networks based on color centers in diamond
• All-optical initialization, readout, and coherent preparation of single silicon-vacancy spins in diamond
• Electron-phonon processes of the silicon-vacancy centre in diamond
• Fault-tolerant operation of a logical qubit in a diamond quantum processor
• Optical holonomic single quantum gates with a geometric spin under a zero field
• All-optical control of the silicon-vacancy spin in diamond at millikelvin temperatures
• Strong coupling between a photon and a hole spin in silicon
• Metropolitan-scale heralded entanglement of solid-state qubits
• Single electron-spin-resonance detection by microwave photon counting
• Germanium Vacancy in Diamond Quantum Memory Exceeding 20 ms
• Diamond optomechanical cavity with a color center for microwave-to-optical quantum interfaces
• Coherent Electric-Field Control of Orbital state in a Neutral Nitrogen-Vacancy Center