599 citations · 1.4k across the 9 of their papers we have counts for
9 papers
Realization of directional amplification in a microwave optomechanical device
L. Mercier de Lépinay, E. Damskägg, C. F. Ockeloen-Korppi +1
Directional transmission or amplification of microwave signals is indispensable in various applications involving sensitive measurements. In this work we show in experiment how to…
Sideband cooling of nearly degenerate micromechanical oscillators in a multimode optomechanical system
C. F. Ockeloen-Korppi, M. F. Gely, E. Damskägg +3
Multimode optomechanical systems are an emerging platform for studying fundamental aspects of matter near the quantum ground state and are useful in sensitive sensing and measureme…
Revealing hidden quantum correlations in an electromechanical measurement
C. F. Ockeloen-Korppi, E. Damskägg, G. S. Paraoanu +2
Under a strong quantum measurement, the motion of an oscillator is disturbed by the measurement back-action, as required by the Heisenberg uncertainty principle. When a mechanical…
Entangled massive mechanical oscillators
C. F. Ockeloen-Korppi, E. Damskagg, J. -M. Pirkkalainen +4
An entangled quantum state of two or more particles or objects exhibits some of the most peculiar features of quantum mechanics. Entangled systems cannot be described independently…
Noiseless quantum measurement and squeezing of microwave fields utilizing mechanical vibrations
C. F. Ockeloen-Korppi, E. Damskägg, J. -M. Pirkkalainen +3
A process which strongly amplifies both quadrature amplitudes of an oscillatory signal necessarily adds noise. Alternatively, if the information in one quadrature is lost in phase-…
Dynamically creating tripartite resonance and dark modes in a multimode optomechanical system
E. Damskägg, J. -M. Pirkkalainen, M. A. Sillanpää
We study a multimode optomechanical system where two mechanical oscillators are coupled to an electromagnetic cavity. Previously it has been shown that if the mechanical resonances…
Quantum back-action evading measurement of collective mechanical modes
C. F. Ockeloen-Korppi, E. Damskägg, J. -M. Pirkkalainen +3
The standard quantum limit constrains the precision of an oscillator position measurement. It arises from a balance between the imprecision and the quantum back-action of the measu…
Low-noise amplification and frequency conversion with a multiport microwave optomechanical device
C. F. Ockeloen-Korppi, E. Damskägg, J. -M. Pirkkalainen +3
High-gain amplifiers of electromagnetic signals operating near the quantum limit are crucial for quantum information systems and ultrasensitive quantum measurements. However, the e…
Squeezing of quantum noise of motion in a micromechanical resonator
J. -M. Pirkkalainen, E. Damskägg, M. Brandt +2
A pair of conjugate observables, such as the quadrature amplitudes of harmonic motion, have fundamental fluctuations which are bound by the Heisenberg uncertainty relation. However…