Accelerated ground-state cooling of an optomechanical resonator via shortcuts to adiabaticity

Liu, Yu-Hong; Yin, Xian-Li; Huang, Jinfeng; Liao, Jie‐Qiao

doi:10.1103/physreva.105.023504

Cited by 9 publications

(1 citation statement)

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“…To establish fast and robust coherent control, a set of powerful methods called shortcuts to adiabaticity (STA) has been developed [32][33][34][35][36][37] and widely adopted in a broad variety of systems, including harmonic trap [38,39], optomechanical cavity [40,41], nitrogen-vacancy center [42,43], and superconducting circuit [44][45][46], and so on. The method of STA mainly includes the invariant-based inverse engineering and the counterdiabatic driving.…”

Section: Introductionmentioning

confidence: 99%

Shortcut-based generation of transmon-magnon entangled states

Yan,

Feng

2024

Phys. Scr.

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Optimized generation of entangled states between solid-state qubits is of fundamental significance to quantum information science and technology. Here, we develop an effective scheme to fast and robustly create the entangled states in a hybrid system containing a superconducting transmon qubit and a spin magnon of yttrium iron garnet. The transmon qubit and the magnon system are coupled via a microwave cavity field. Within the framework of invariant-based shortcuts to adiabaticity, the transmon-magnon entangled states can be rapidly induced by engineering the Rabi couplings between the cavity mode and transmon (magnon) with constant amplitudes. Compared with a non-shortcut counterpart, the shortcut-based operations of interest not only considerably shorten the generation time, but also greatly mitigate the decoherence effects. Furthermore, the fast dynamics is well insensitive to the control deviation of Rabi couplings. Thus our approach could lead to advances in information processing and state engineering with composite systems.

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Section: Introductionmentioning

confidence: 99%

Shortcut-based generation of transmon-magnon entangled states

Yan,

Feng

2024

Phys. Scr.

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Photon‐Assisted Quantum Phase Transitions in a Cavity Optomechanical System with Two Nonlinear Mechanical Modes

Jiang,

Zhang,

Liu

et al. 2024

Annalen der Physik

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Photon‐assisted quantum phase transitions (QPTs) are studied in a cavity optomechanical system that consists of one optical cavity and two nonlinear mechanical resonators and explore ground‐state properties of quantum phases. It is indicated that the cavity mode can induce effective two‐phonon tunneling interaction between two mechanical resonators. It is found that QPTs between the localization phase (LP) and delocalization phase (DP) of phonons can happen through tuning the phonon tunneling interaction. It is shown that the photon‐assisted QPT is the second order QPT. Ground‐state properties of the quantum phases are also investigated. It is indicated that the ground state of the LP is a separable squeezed state while the ground state of the DP is an entangled state. The results open a new way to engineer quantum phases and QPTs in macroscopic mechanical systems and can benefit a wide range of criticality‐enhanced quantum sensing applications.

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