This paper gives a brief review of the basic physics of quantum optomechanics and provides an overview of some of its recent developments and current areas of focus. It first outlines the basic ...theory of cavity optomechanical cooling and gives a brief status report of the experimental state‐of‐the‐art. It then turns to the deep quantum regime of operation of optomechanical oscillators and covers selected aspects of quantum state preparation, control and characterization, including mechanical squeezing and pulsed optomechanics. This is followed by a discussion of the “bottom‐up” approach that exploits ultracold atomic samples instead of nanoscale systems. It concludes with an outlook that concentrates largely on the functionalization of quantum optomechanical systems and their promise in metrology applications.
We study the collective radiative decay of a system of two two-level emitters coupled to a one-dimensional waveguide in a regime where their separation is comparable to the coherence length of a ...spontaneously emitted photon. The electromagnetic field propagating in the cavity-like geometry formed by the emitters exerts a retarded backaction on the system leading to strongly non-Markovian dynamics. The collective spontaneous emission rate of the emitters exhibits an enhancement or inhibition beyond the usual Dicke superradiance and subradiance due to self-consistent coherent time-delayed feedback.
With a new chapter on quantum entanglement and quantum information, this fourth edition of the brilliant work on quantum optics has been much updated. It still provides all the information necessary ...to understand and carry out research in laser physics and quantum optics.
Cool Vibrations Meystre, Pierre
Science (American Association for the Advancement of Science),
08/2011, Letnik:
333, Številka:
6044
Journal Article
Recenzirano
The ability to cool mechanical systems to ultralow temperatures will enable a new generation of sensitive detectors.
Reaching for extremes in temperature has repeatedly proven to be a major route to ...transformational advances in fundamental and applied science. For example, the increasingly high temperatures attained in the realm of high-energy particle physics allow us to access the most fundamental constituents of the universe. At the other extreme, ultralow temperatures have led to discoveries such as superfluidity and superconductivity. Laser cooling has been a key technology in attaining the lowest temperatures ever achieved, with the record now in the tens of picokelvins range (
1
). These low temperatures allow exploration of subtle quantum mechanical effects such as the crossover between superconductivity and superfluidity and magnetic ordering. They also permit the realization of quantum simulators for the study of complex, strongly correlated many-body systems.
Because of their low energy content, microwave signals at the single-photon level are extremely challenging to measure. Guided by recent progress in single-photon optomechanics and hybrid ...optomechanical systems, we propose a multimode optomechanical transducer that can detect intensities significantly below the single-photon level via adiabatic transfer of the microwave signal to the optical frequency domain where the measurement is then performed. The influence of intrinsic quantum and thermal fluctuations is also discussed.
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