Unitary reduction of the Liouville equation relative to a two-level atom coupled to a bimodal lossy cavity

Accuracy of a teleported trapped field state inside a single bimodal cavity

We propose a simplified scheme to teleport a superposition of coherent states from one mode to another of the same bimodal lossy cavity. Based on current experimental capabilities, we present a calculation of the fidelity that can be achieved, demonstrating accurate teleportation if the mean photon number of each mode is at most 1.5. Our scheme applies as well for teleportation of coherent states from one mode of a cavity to another mode of a second cavity, both cavities embedded in a common reservoir.

Loss-enabled sub-Poissonian light generation in a bimodal nanocavity

We propose an implementation of a source of strongly sub-Poissonian light in a system consisting of a quantum dot coupled to both modes of a lossy bimodal optical cavity. When one mode of the cavity is resonantly driven with coherent light, the system will act as an efficient photon number filter, and the transmitted light will have a strongly sub-Poissonian character. In addition to numerical simulations demonstrating this effect, we present a physical explanation of the underlying mechanism. In particular, we show that the effect results from an interference between the coherent light transm…

Solving the quantum master equation of coupled harmonic oscillators with Lie algebra methods

Based on a Liouville-space formulation of open systems, we present two methods to solve the quantum dynamics of coupled harmonic oscillators experiencing Markovian loss. Starting point is the quantum master equation in Liouville space which is generated by a Liouvillian that induces a Lie algebra. We show how this Lie algebra allows to define ladder operators that construct Fock-like eigenstates of the Liouvillian. These eigenstates are used to decompose the time-evolved density matrix and, together with the accompanying eigenvalues, provide insight into the transport properties of the lossy s…

少原子激光器的精确阻尼基连分数：超越二阶累积量闭合的集体关联

Exact damping-basis continued fractions for few-atom lasers: collective correlations beyond second-order cumulant closure

本文结合阻尼基与置换不变Liouville基，提出少原子激光器的精确块三对角连分数解法，验证二阶累积量闭合的局限，并揭示双原子相干性与光谱窄化。