Publications (5)
Nanoscale feedback control of six degrees of freedom of a near-sphere
M. Kamba, R. Shimizu, K. Aikawa
We demonstrate feedback cooling of all the angular motions of a near-spherical neutral nanoparticle with all the translational motions feedback-cooled to near the ground state. The…
Quantum squeezing of a levitated nanomechanical oscillator
M. Kamba, N. Hara, K. Aikawa
Manipulating the motions of macroscopic objects near their quantum mechanical uncertainties has been desired in diverse fields, including fundamental physics, sensing, and transduc…
A levitated nano-accelerometer sensitized by quantum quench
M. Kamba, S. Otabe, K. Funo +2
We realize a nanoscale accelerometer exploiting the nonequilibrium dynamics of a nanoparticle near the quantum ground state. We explore the dynamics after quenching the trapping po…
Recoil-limited feedback cooling of single nanoparticles near the ground state in an optical lattice
M. Kamba, H. Kiuchi, T. Yotsuya +1
We report on direct feedback cooling of single nanoparticles in an optical lattice to near their motional ground state. We find that the laser phase noise triggers severe heating o…
Revealing the velocity uncertainties of a levitated particle in the quantum ground state
M. Kamba, K. Aikawa
We demonstrate time-of-flight measurements for an ultracold levitated nanoparticle and reveal its velocity for the translational motion brought to the quantum ground state. We disc…