Coherent magnetoelastic control of color center spins

Spin qubits are one of the most promising architectures for quantum computing, communication, and sensing. Despite this diverse range of applications, they share a common challenge: efficient, localized control of the spin degree of freedom. Magnetoelastic films driven by acoustic excitations have shown great potential for low-power spin control [1], but demonstrating coherent qubit manipulation remains an outstanding challenge because of competing incoherent relaxation from the magnetic film. I will discuss recent work from our group using NV centers to probe magnetic dynamics in these systems, revealing previously hidden spatial heterogeneity and how this insight allows us to engineer systems capable of highly localized coherent control of spin qubits.

[1] D. Labanowski, V. P. Bhallamudi, Q. Guo, C. M. Purser, B. A. McCullian, P. C. Hammel, and S. Salahuddin, Voltage-driven, local, and efficient excitation of nitrogen-vacancy centers in diamond, Science Advances 4, eaat6574 (2018).