In this review, the authors study how a hybrid optomechanical system (OMS), in which a
quantum micro-or nano-mechanical oscillator is coupled to the electromagnetic radiation …

Directional amplifiers are an important resource in quantum-information processing, as they
protect sensitive quantum systems from excess noise. Here, we propose an implementation …

Quantum mechanics imposes a limit on the precision of a continuous position measurement
of a harmonic oscillator, due to backaction arising from quantum fluctuations in the …

Quantum control techniques applied at macroscopic scales provide us with opportunities in
fundamental physics and practical applications. Among them, measurement-based …

Backaction-evading measurements of mechanical motion can achieve precision below the
zero-point uncertainty and quantum squeezing, which makes them a resource for quantum …

We study force-gradient sensing with a coherently driven mechanical resonator and phase-
sensitive detection of motion through the two-tone backaction evading measurement of …

Backaction-evading (BAE) measurements of a mechanical resonator, by continuously
monitoring a single quadrature of motion, can achieve precision below the zero-point …

A challenging task of cavity optomechanics is to observe single-photon optomechanical
effects. To explore an intrinsic nonlinear effect of single-photon cavity optomechanics, we …

Cavity optomechanics and electromechanics form an established field of research
investigating the interactions between electromagnetic fields and the motion of quantum …

Owing to its peculiar energy dispersion, the quantum capacitance property of graphene can
be exploited in a two-dimensional layered capacitor configuration. Using graphene and …