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arXiv 2301.02839quant-ph
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确定性产生大振幅光学猫态的方法

Method to deterministically generate large-amplitude optical cat states

Zheng-Hong Li, Fei Yu, Zhen-Ya Li, M. Al-Amri, M. Suhail Zubairy

AI总结:

利用无相互作用测量和量子Zeno效应,使脆弱量子微观系统在弱场环境中确定性地控制强光场并与之纠缠,实现了大振幅光学猫态的制备,且可通过降低经典光学损耗提升保真度。

摘要:

猫态作为研究宏观量子叠加和量子信息应用的重要资源,已引起广泛关注。迄今为止,制备大尺寸光学猫态仍具有挑战性。我们证明,通过利用无相互作用测量和量子Zeno效应,即使是脆弱的量子微观系统也能确定性地控制强光场并与之纠缠,从而产生大振幅光学猫态。在整个制备过程中,我们的方法确保微观系统在弱场环境中运作,从而保护其量子特性。此外,我们表明,只要经典器件的光学损耗保持在低水平,即使量子微观系统存在显著的 photon loss(光子损耗),猫态的制备也是可能的,这意味着可以通过改进和完善经典光学系统来提高猫态的保真度。

英文摘要:

Cat states, as an important resource in the study of macroscopic quantum superposition and quantum information applications, have garnered widespread attention. To date, preparing large-sized optical cat states has remained challenging. We demonstrate that, by utilizing interaction-free measurement and the quantum Zeno effect, even a fragile quantum microscopic system can deterministically control and become entangled with strong light fields, thereby generating large-amplitude optical cat states. During the entire preparation process, our method ensures that the microscopic system functions within a weak field environment, so that its quantum property can be protected. Furthermore, we show that the preparation of cat states is possible even when the quantum microsystem suffers from significant photon loss, provided that optical losses from classical devices are kept low, which implies that the fidelity of the cat state can be enhanced by improvements to and the perfection of the classical optical system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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