Quantum correlations among optical and vibrational quanta

Abstract

We investigate the feasibility of correlating an optical cavity field and a vibrational phonon mode. A laser pumped quantum dot fixed on a nano-mechanical resonator beam interact as a whole with the optical resonator mode. When the quantum dot variables are faster than the optical and phonon ones, we obtain a final master equation describing the involved modes only. Increasing the temperature, that directly affects the vibrational degrees of freedom, one can as well influence the cavity photon intensity, i.e., the optical and phonon modes are correlated. Furthermore, the corresponding Cauchy-Schwarz inequality is violated demonstrating the quantum nature of those correlations.

5 pages, 2 figures

References in corpus (11)

• Bidirectional and efficient conversion between microwave and optical light
• Measurement of the quantum zero-point motion of a nanomechanical resonator
• Laser cooling of a nanomechanical resonator mode to its quantum ground state
• Coherent phonon manipulation in coupled mechanical resonators
• Coupled quantized mechanical oscillators
• Superconducting Qubit Storage and Entanglement with Nanomechanical Resonators
• Two-mode single-atom laser as a source of entangled light
• Feedback-enhanced parametric squeezing of mechanical motion
• Entanglement created by spontaneously generated coherence
• Single-atom quantum control of macroscopic mechanical oscillators
• Collective Quantum Dot Inversion and Amplification of Photon and Phonon Waves

Cited by in corpus (5)

• Cross-correlation between photons and phonons in quadratically coupled optomechanical systems
• Generation of single entangled photon-phonon pairs via an atom-photon-phonon interaction
• Analytical approach to higher-order correlation functions in U(1) symmetric systems
• Violation of generalized Bell inequality and its optimal measurement settings
• Long-time correlated quantum dynamics of phonon cooling