Subtraction and Addition of Propagating Photons by Two-Level Emitters,Physical Review Letters

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Subtraction and Addition of Propagating Photons by Two-Level Emitters
Physical Review Letters ( IF 8.1 ) Pub Date : 2024-09-04 , DOI: 10.1103/physrevlett.133.103601
Mads M. Lund ₁ , Fan Yang ₂ , Victor Rueskov Christiansen ₁ , Danil Kornovan ₁ , Klaus Mølmer ₂

Affiliation

Coherent manipulation of quantum states of light is key to photonic quantum information processing. In this Letter, we show that a passive two-level nonlinearity suffices to implement non-Gaussian quantum operations on propagating field modes. In particular, the collective light-matter interaction can efficiently extract a single photon from a multiphoton input wave packet to an orthogonal temporal mode. We accurately describe the single-photon subtraction process by elements of an intuitive quantum-trajectory model. By employing this process, quantum information protocols gain orders of magnitude improved efficiency over heralded schemes with linear optics. The reverse process can be used to add photons one by one to a single wave packet mode and compose arbitrarily large Fock states with a finite total success probability

> 96.7 %

.

中文翻译：

二能级发射器传播光子的减法和加法

光量子态的相干操纵是光子量子信息处理的关键。在这封信中，我们证明无源两级非线性足以在传播场模式上实现非高斯量子运算。特别是，集体光-物质相互作用可以有效地从多光子输入波包中提取单个光子到正交时间模式。我们通过直观的量子轨迹模型的元素准确地描述了单光子相减过程。通过采用这一过程，量子信息协议的效率比传统的线性光学方案提高了几个数量级。逆过程可用于将光子逐一添加到单波包模式中，并以有限的总成功概率组成任意大的福克态

> 96.7 %

。

更新日期：2024-09-05

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