2020
DOI: 10.1103/physrevlett.124.163604
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Single-Spin Magnetomechanics with Levitated Micromagnets

Abstract: We demonstrate a new mechanical transduction platform for individual spin qubits. In our approach, single micro-magnets 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 one million and kHz trapping frequencies. We further exploit the large magnetic moment to mass ratio of this m… Show more

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Cited by 101 publications
(110 citation statements)
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“…Note: when finalizing this paper we became aware of a related paper by Gieseler et al [56]. which means that we expect a slightly sublinear increase of Q when reducing the radius a.…”
Section: Discussionmentioning
confidence: 82%
“…Note: when finalizing this paper we became aware of a related paper by Gieseler et al [56]. which means that we expect a slightly sublinear increase of Q when reducing the radius a.…”
Section: Discussionmentioning
confidence: 82%
“…Another way to trap micro-particles is to use magnetic fields. In magnetic traps, a magnetic object is levitating above a diamagnetic/superconductor material [35]. Alternatively, a diamagnetic particle-such as diamond-is levitating above magnets (see Figure 1c).…”
Section: Trapping Platformsmentioning
confidence: 99%
“…Adapted from ref. [35]. (d) A diamond particle is trapped by large magnetic field gradients thanks to its diamagnetism.…”
Section: Trapping Platformsmentioning
confidence: 99%
“…The ability to detect tiny momentum transfers to nanogram-scale masses is enabled by the extreme sensitivity of recently developed levitated optomechanical systems. Techniques to trap micron or submicron sized masses via optical [15][16][17], magnetic [18][19][20][21], or radio frequency [22][23][24][25] fields have progressed substantially in the last decade [26]. Past work has demonstrated the ability to cool particles with ∼ femtogram masses to μK effective temperatures [27][28][29].…”
mentioning
confidence: 99%