Generating squeezing and enhancing entanglement in an opto-magnomechanical system via pump modulation

Area of Science:

• Quantum optics
• Opto-magnomechanics
• Condensed matter physics

Background:

• Opto-magnomechanical systems integrate optical cavities with magnon and mechanical modes.
• Interactions include radiation pressure and magnetostrictive effects.
• Controlling quantum states in such hybrid systems is crucial for quantum technologies.

Purpose of the Study:

• To propose schemes for generating quantum squeezing and enhancing entanglement.
• To investigate the effects of periodically modulating the driving field.
• To explore applications in quantum precision measurement and information processing.

Main Methods:

• Utilizing an opto-magnomechanical system with coupled optical, magnon, and mechanical modes.
• Periodically modulating the amplitude of the driving laser field.
• Analyzing system dynamics under specific detuning conditions (red-detuned and blue-detuned fields).

Main Results:

• Achieved simultaneous squeezing of all system modes when red-detuned fields resonate.
• Demonstrated mechanical squeezing exceeding the 3-dB limit.
• Generated and significantly enhanced bipartite and tripartite entanglement with specific detuning configurations.

Conclusions:

• The proposed schemes effectively generate quantum squeezing and enhance entanglement.
• The methods show robustness against dissipation and temperature variations.
• These findings provide valuable quantum resources for advanced quantum applications.