Preparation and detection of a mechanical resonator near the ground state of motion

@article{Rocheleau2010PreparationAD,
  title={Preparation and detection of a mechanical resonator near the ground state of motion},
  author={Tristan Rocheleau and Tchefor Ndukum and Chris Macklin and Jared B. Hertzberg and Aashish A Clerk and Keith C. Schwab},
  journal={Nature},
  year={2010},
  volume={463},
  pages={72-75}
}
Cold, macroscopic mechanical systems are expected to behave contrary to our usual classical understanding of reality; the most striking and counterintuitive predictions involve the existence of states in which the mechanical system is located in two places simultaneously. Various schemes have been proposed to generate and detect such states, and all require starting from mechanical states that are close to the lowest energy eigenstate, the mechanical ground state. Here we report the cooling of… 

Quantum ground state and single-phonon control of a mechanical resonator

This work shows that conventional cryogenic refrigeration can be used to cool a mechanical mode to its quantum ground state by using a microwave-frequency mechanical oscillator—a ‘quantum drum’—coupled to a quantum bit, which is used to measure the quantum state of the resonator.

Laser Cooling of an Optomechanical Crystal Resonator to Its Quantum Ground State of Motion

Quantum mechanics continues to intrigue us with bizarre predictions that seemingly run counter to our everyday classical intuition. Superposition, zero-point motion, entanglement, and inescapable

Laser cooling of a nanomechanical oscillator into its quantum ground state

The development of a coupled, nanoscale optical and mechanical resonator formed in a silicon microchip, in which radiation pressure from a laser is used to cool the mechanical motion down to its quantum ground state, paving the way for optical control of mesoscale mechanical oscillators in the quantum regime.

Classical and quantum theory of photothermal cavity cooling of a mechanical oscillator

Sideband cooling of micromechanical motion to the quantum ground state

Sideband cooling of an approximately 10-MHz micromechanical oscillator to the quantum ground state is demonstrated and the device exhibits strong coupling, allowing coherent exchange of microwave photons and mechanical phonons.

Measurement of the quantum zero-point motion of a nanomechanical resonator

We present optical sideband spectroscopy measurements of a mesoscopic mechanical oscillator cooled near its quantum ground state. The mechanical oscillator, corresponding to a 3 . 99 GHz acoustic

A macroscopic mechanical resonator operated in the quantum limit

A Macroscopic Mechanical Resonator Operated in the Quantum Limit by Aaron D. O’Connell We report the experimental results of a superconducting quantum bit coupled to a macroscopic mechanical

Mechanical systems in the quantum regime

Ground-state cooling of mechanical resonators by quantum reservoir engineering

Ground-state cooling of multiple mechanical resonators becomes vital to employ them in various applications ranging from ultra-precise sensing to quantum information processing. Here we propose a

Energy-localization-enhanced ground-state cooling of a mechanical resonator from room temperature in optomechanics using a gain cavity

When a gain system is coupled to a loss system, the energy usually flows from the gain system to the loss one. We here present a counterintuitive theory for the ground-state cooling of the mechanical
...

References

SHOWING 1-10 OF 50 REFERENCES

Prospects for cooling nanomechanical motion by coupling to a superconducting microwave resonator

Recent theoretical work has shown that radiation pressure effects can in principle cool a mechanical degree of freedom to its ground state. In this paper, we apply this theory to our realization of

Ground-state cooling of mechanical resonators

We propose an application of a single Cooper pair box (Josephson qubit) for active cooling of nanomechanical resonators. Latest experiments with Josephson qubits demonstrated that long coherence time

Cooling a nanomechanical resonator with quantum back-action

The back-action of a superconducting single-electron transistor (SSET) on a radio-frequency nanomechanical resonator is measured to anticipate the use of these back- action effects to prepare ultracold and quantum states of mechanical structures, which would not be accessible with existing technology.

Back-Action Evading Measurements of Nanomechanical Motion Approaching Quantum Limits

Title of dissertation: BACK-ACTION EVADING MEASUREMENTS OF NANOMECHANICAL MOTION APPROACHING QUANTUM LIMITS Jared B. Hertzberg Doctor of Philosophy, 2009 Dissertation committee chair: Professor

Quantum theory of optomechanical cooling

We review the quantum theory of cooling of a mechanical oscillator subject to the radiation pressure force due to light circulating inside a driven optical cavity. Such optomechanical setups have

Demonstration of an ultracold micro-optomechanical oscillator in a cryogenic cavity

Preparing and manipulating quantum states of mechanical resonators is a highly interdisciplinary undertaking that now receives enormous interest for its far-reaching potential in fundamental and

Quantum theory of cavity-assisted sideband cooling of mechanical motion.

It is found that reaching the quantum limit of arbitrarily small phonon numbers requires going into the good-cavity (resolved phonon sideband) regime where the cavity linewidth is much smaller than the mechanical frequency and the corresponding cavity detuning.

Dynamical backaction of microwave fields on a nanomechanical oscillator.

We measure the response and thermal motion of a high-Q nanomechanical oscillator coupled to a superconducting microwave cavity in the resolved-sideband regime where the oscillator's resonance

Resolved-sideband and cryogenic cooling of an optomechanical resonator

Combing cryogenic and so-called sideband cooling promises to cool micrometre-scaled resonators to the point at which quantum effects take hold. Hope that this aim will soon be reached is boosted by

Theory of ground state cooling of a mechanical oscillator using dynamical backaction.

A quantum theory of cooling of a mechanical oscillator by radiation pressure-induced dynamical backaction is developed, which is analogous to sideband cooling of trapped ions, and it is shown that the final average occupancy can be retrieved directly from the optical output spectrum.