We present a proposal to generate robust optomechanical entanglement induced by the blue-detuning laser and the mechanical gain in a double-cavity optomechanical system. We show that the stability of the system can be obtained by introducing a cavity mode driven by the red-detuning laser in the blue-detuning regime. In contrast to the red-detuning regime, we find that the entanglement in the blue-detuning regime is extremely robust to temperature. The cavity mode driven by the blue-detuning laser can control indirectly the optomechanical entanglement between mechanical resonator and cavity mode driven by the red-detuning laser. Moreover, the entanglement between two cavity modes without direct coupling can also be achieved in our system. Although the entanglement is weak, it is robust to temperature, and meanwhile, the optomechanical entanglement is hardly affected by the temperature when the damping rate of the mechanical oscillator is close to zero. Furthermore, the entanglement amplification at high temperature can be achieved by adjusting the mechanical gain appropriately. Our proposal provides an efficient way to achieve robust optomechanical entanglement in the blue-detuning regime and entanglement amplification in optomechanical system with mechanical gain.
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http://dx.doi.org/10.1364/OE.27.029581 | DOI Listing |
Small Methods
January 2025
School of Mechanical and Aerospace Engineering, Gyeongsang National University, Jinju, 52828, South Korea.
In various applications, the pore structure of a porous medium must be controlled to facilitate heat and mass transfer, which considerably influence the system performance. Freeze-casting is a versatile technique for creating aligned pores; However, because of the complexity of the associated equipment and the energy inefficiency of liquid-nitrogen-based cooling in a room-temperature environment, limits scalability for industrial applications. This study is aimed at establishing a novel freeze-casting strategy with a simple mold design combining heat-conductive and insulating materials for long-range pore alignment via directional ice growth under deep-freezing conditions, rendering it feasible for large-scale production.
View Article and Find Full Text PDFJ Cereb Blood Flow Metab
January 2025
Department of Cell Biology and Physiology, Washington University in St. Louis, St. Louis, MO, USA.
Regional blood flow within the brain is tightly coupled to regional neuronal activity, a process known as neurovascular coupling (NVC). In this study, we demonstrate the striking role of SUR2- and Kir6.1-dependent ATP-sensitive potassium (K) channels in control of NVC in the sensory cortex of conscious mice, in response to mechanical stimuli.
View Article and Find Full Text PDFJ Clin Orthop Trauma
February 2025
Orthopedic Surgery, Brigham & Women's Hospital, Harvard University, Boston, MA, USA.
•The success of cementless fixation in TJA depends on a multitude of factors including biological, mechanical, implant, surgical, and material properties.•Biologic fixation has become the primary mode of fixation for the majority of primary total hip arthroplasty (THA) surgeries done today in the United States (US) due to its low complication rate and superior longevity compared to cemented fixation.•Cementless fixation has yet to gain wider acceptance in total knee arthroplasty (TKA) and hip hemiarthroplasty due to several factors including host bone quality, implant design, and surgical technique.
View Article and Find Full Text PDFFASEB J
January 2025
Laboratory of Tissue Biology and Therapeutic Engineering, UMR5305 CNRS, University Lyon 1, Lyon Cedex 07, France.
G-Protein Coupled Receptor, Class C, Group 5, Member A (GPRC5A) has been extensively studied in lung and various epithelial cancers. Nevertheless, its role in the skin remains to be elucidated. In this study, we sought to investigate the function of this receptor in skin biology.
View Article and Find Full Text PDFERJ Open Res
January 2025
Critical Care Department, Hospital Garcia de Orta EPE, Almada, Portugal.
Introduction: The number of vertical artefacts (VAs) in lung ultrasound (LUS) impacts patients' clinical management. This study aimed to demonstrate the influence of ultrasound settings on the number of VAs in patients under invasive mechanical ventilation (IMV).
Methods: Patients under IMV were recruited for LUS, including three breathing cycles with a motionless curvilinear probe on the thoracic region with the most VAs.
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