Year: 2020
Type: article
Abstract: We demonstrate a new mechanical transduction platform for individual spin qubits. In our approach, single micromagnets are trapped using a type-II superconductor in proximity of spin qubits, enabling direct magnetic coupling between the two systems. Controlling the distance between the magnet and the superconductor during cooldown, we demonstrate three-dimensional trapping with quality factors around 1×10^{6} and kHz trapping frequencies. We further exploit the large magnetic moment to mass ratio of this mechanical oscillator to couple its motion to the spin degrees of freedom of an individual nitrogen vacancy center in diamond. Our approach provides a new path towards interfacing individual spin qubits with mechanical motion for testing quantum mechanics with mesoscopic objects, realization of quantum networks, and ultrasensitive metrology.
Source: Physical Review Letters
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,750
Funders: National Science Foundation, U.S. Department of Defense, Gordon and Betty Moore Foundation, Harvard University, European Commission, Horizon 2020 Framework Programme, National Defense Science and Engineering Graduate, Multidisciplinary University Research Initiative, Center for Ultracold Atoms, Massachusetts Institute of Technology, Office of Naval Research, H2020 European Research Council
Awards: G1134578003, Phononic Waveguide-based Platforms for Quantum Technologies, G2140688951, G2202068648, G2411321457, Single-Emitter Quantum Optics and Optomechanics, G3228588229, G3291143030, G3345895242, G4937468798, Graduate Research Fellowship Program (GRFP), G5128061910, G526393511, G57646969, NNCI: The Center for Nanoscale System (CNS) at Harvard University, G6100342675, G6329715174, G6934100220, G8019869205, G8030067134, G8512683158, Graduate Research Fellowship Program (GRFP), G8874346506
OpenAlex ID: W2996006294