Generalized Ultrastrong Optomechanics

Abstract

We propose a reliable scheme to realize a generalized ultrastrong optomechanical coupling in a two-mode cross-Kerr-type coupled system, where one of the bosonic modes is strongly driven. The effective optomechanical interaction takes the form of a product of the photon number operator of one mode and the quadrature operator of the other mode. The coupling strength and quadrature phase are both tunable via the driving field. The coupling strength can be strongly enhanced to reach the ultrastrong-coupling regime, where the few-photon optomechanical effects such as photon blockade and macroscopically distinct quantum superposition become accessible. The presence of tunable quadrature phase also enables the implementation of geometric quantum operations. Numerical simulations show that this method works well in a wide parameter space. We also present an analysis of the experimental implementation of this scheme.

6 pages, 3 figures, plus supplementary materials (18 pages, 9 figures, 2 tables)

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• All-optical quantum simulation of ultrastrong optomechanics
• Suppressing laser phase noise in an optomechanical system
• Optical normal-mode-induced phonon-sideband splitting in photon-blockade effect
• Magnon and photon blockade in a hybrid antiferromagnet-cavity quantum system
• Optimized mechanical quadrature squeezing beyond the 3-dB limit via a gradient-descent algorithm
• Quantum Simulation of Tunable and Ultrastrong Mixed-Optomechanics
• Deterministic generation of nonclassical mechanical states in cavity optomechanics via reinforcement learning
• Quantum simulation of a three-mode optomechanical system based on the Fredkin-type interaction
• Kerr-enhanced optomechanical entanglement generation via reservoir design
• Hybrid optomechanical superconducting qubit system
• Chiral-cat-state generation via the Sagnac-Fizeau effect
• Steady motional entanglement between two distant levitated nanoparticles
• Significant enhancement in refrigeration and entanglement in auxiliary-cavity-assisted optomechanical systems