Direct measurement of the Q-function in a lossy cavity
H. Moya-Cessa, R. Juarez-Amaro, I. Ricardez-Vargas
我们表明，Q-函数对应的电磁场在一个有损耗的腔可以直接测量通过一个简单的计划，因此允许的知识，尽管耗散的状态的字段。
We show that the Q-function corresponding to an electromagnetic field in a lossy cavity can be directly measured by means of a simple scheme, therefore allowing the knowledge of the state of the field despite dissipation.
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。
继续探索
Unitary reduction of the Liouville equation relative to a two-level atom coupled to a bimodal lossy cavity
将耦合到双模腔中的二能级原子的Liouville方程统一精确地化为两个非耦合的Liouville方程。第一个模型描述了耗散的Jaynes-Cummings模型，另一个模型描述了阻尼谐振子。有关的减少方法的优点进行了讨论。
Photon emission by an atom in a lossy cavity
利用量子轨道方法研究了有耗腔中初始受激二能级原子的动力学行为。不必要的损失，如光子吸收和散射的腔镜和自发发射的原子。基于获得的解析解，表明提取的时空辐射模式的形状敏感地依赖于原子与场的相互作用。在一个短期的原子-场相互作用的情况下，我们展示了如何不同的脉冲形状的场提取的腔可以控制的相互作用时间。
Continuous pumping and control of mesoscopic superposition state in a lossy QED cavity
在这里，我们考虑连续泵浦的耗散QED腔和导出的依赖于时间的密度算符的腔场最初准备作为一个叠加的介观相干态。这种叠加的相干性的控制进行了分析，考虑到注入的二能级里德伯原子束通过腔。我们的治疗方法与其他方法进行了比较。
Off-resonant entanglement generation in a lossy cavity
我们提供了一个精确和完整的表征纠缠动力学的两个量子位耦合到一个共同的结构化水库在零温度。我们导出了两量子比特系统初始因式分解态的最大化量子纠缠的条件。特别是，当两个量子比特被放置在一个有损腔，我们表明，可以获得高值的纠缠，即使在坏腔的限制，在色散制度。最后，我们表明，在一定的条件下，纠缠动力学表现出量子拍频，我们解释了它们的物理起源在两个不同的过渡耦合系统的修饰状态之间的干扰。
A nonlinear mechanism of charge qubit decoherence in a lossy cavity: the quasi normal mode approach
从准简正模的观点出发，描述了有耗微腔中约瑟夫森结（JJ）电荷量子比特的一种新的退相干机制，这种退相干机制可以在基于JJ量子比特的量子计算的实际实验中出现.研究表明，电荷量子比特与量子腔场的非线性耦合会导致共振模的额外耗散，这是由于电荷量子比特自身诱导的共振模与非共振模之间的有效相互作用.利用系统加浴法计算了这种新型退相干的特征时间。
We analyze a cavity optomechanical setup, in which position of an oscillator modulates optical loss. We show that in such setup quantum limited position measurements can be performed if the external cavity coupling rate matches the optical loss rate, a condition known as "critical coupling". Additionally, under this condition the setup exhibits a number of potential benefits for practical operation including the complete absence of dynamical backaction, and hence optomechanical instability, and rejection of classical laser noise and thermal fluctuations of cavity frequency from the measurement…
Controlling decoherence of a two-level-atom in a lossy cavity
利用外部周期性驱动源，我们证明了控制置于有耗腔中的二能级原子的相干和退相干动力学的可能性。阐述了相干动力学对隧穿相干破坏（CDT）现象的控制，处于量子叠加态的受驱动二能级原子的相干动力学实际上可以完全停止。我们研究了二能级原子在不同初始制备条件下的这种现象。然后，我们继续研究的退相干起源于二能级原子与有耗腔模的相互作用。的损耗机制中描述的一个微观模型，耦合谐振腔模式到一个浴缸的谐波场模式。在二能级原子上施加一个适当调谐的连续激光场，可以大大降低原子的退相干。我们证明了原子态的两个相反的初始制备：量子叠加态以及基态的消相干的抑制。这些发现可以用于在量子比特操纵过程中熟练地对抗退相干的效果。
Decoherence of two maximally entangled qubits in a lossy nonlinear cavity
分析了有耗腔中两个光量子比特与非线性介质（克尔非线性）相互作用时的退相干效应对量子纠缠的影响。假设量子比特最初处于最大纠缠态（Bell或Bell类态）或最大纠缠混合态，以Werner和Werner类态为例。考虑了两种纠缠度量：描述量子比特形成纠缠衰减的纠缠度和确定正部分转置保持操作下纠缠代价衰减的负纠缠度.我们观察到，在所讨论的退相干模型中，克尔非线性不影响最初处于贝尔或维尔纳态的量子比特的纠缠，尽管量子比特的演化可以明确地依赖于这种非线性。然而，对于初始Bell态和相应的Werner-like态，通过在有耗腔中引入Kerr非线性效应，可以周期性地减小纠缠的损耗.此外，纠缠措施的相对性被证明，据我们所知，第一次，作为一个物理过程的结果。
We have numerically obtained theoretical results for the collapse and the revival of the quantum Rabi oscillations for low average number of coherent photons injected on a two-level system in a lossy resonant cavity. We have adopted the multimode Jaynes-Cummings model for the same and especially treated the ``Ohmic" loss to the walls of the cavity, the leakage from the cavity, and the loss due to the spontaneous emission through the open surface of the cavity. We have compared our results with the experimental data obtained by Brune et al [Phys. Rev. Lett. 76, 1800 (1996)] in this regard.
The interaction between quantum light and matter is being intensively studied for systems that are enclosed in high-$Q$ cavities which strongly enhance the light-matter coupling. However, for many applications, cavities with lower $Q$-factors are preferred due to the increased spectral width of the cavity mode. Here, we investigate the interaction between quantum light and matter represented by a $Λ$-type three-level system in lossy cavities, assuming that cavity losses are the dominant loss mechanism. We demonstrate that cavity losses lead to non-trivial steady states of the electronic occupa…
QED of lossy cavities: operator and quantum-state input-output relations
在色散和吸收介质中电磁场精确量子化的框架内，研究了高功率$Q$腔的输入输出问题，着重研究了耦合镜的吸收损耗。正如预期的那样，腔模式被发现服从量子朗之万方程，这也可以从量子噪声理论，通过适当地耦合腔模式的耗散系统，包括镜辅助吸收损耗的影响。相反，用这种方法得到的经营者投入产出关系一般是不完全的，正如精确计算所示。基于算符输入输出关系，研究了初始激发腔模量子态的提取问题，导出了$s$参数化相空间函数的输入输出关系，特别着重讨论了出射场量子态的Wigner函数与腔场的Wigner函数之间的关系.
Collective strong coupling in a lossy optical cavity
我们观察到真空拉比分裂的损耗近共焦腔表示强耦合制度，尽管弱的单原子单模耦合。强的集体相互作用表现为简正模分裂对原子数$N$的典型的$\sqrt{N}$依赖性。$TEM_{00}$模耦合参数为$(g,κ,γ)=2π\times(0.12,0.8,2.6)$ MHz，最多可将$(1.33\pm 0.08)\times10^5$铯原子加载到模体积中.
Continuous-variable (CV) entanglement is a valuable resource in the field of quantum information. One source of CV entanglement is the correlations between the position and momentum of photons in a two-mode squeezed state of light. In this paper, we theoretically study the generation of squeezed states, via spontaneous parametric downconversion (SPDC), inside a two-mode lossy cavity that is pumped with a classical optical pulse. The dynamics of the density operator in the cavity is modelled using the Lindblad master equation, and we show that the exact solution to this model is the density ope…
What is the spectral density of the reservoir for a lossy quantized cavity?
本研究通过准正规模展开，揭示了有损腔与光子储层耦合的局部光谱密度具有规范依赖的$\sim ω^{\pm 1}$标度及空间修正，建立了正确的量子相互作用形式，对宽带强耦合有显著影响。
Interfacing solid-state emitters with photonic structures is a key strategy for developing highly efficient photonic quantum technologies. Such structures are often organised into two distinct categories: nanocavities and waveguides. However, any realistic nanocavity structure simultaneously has characteristics of both a cavity and waveguide, which is particularly pronounced when the cavity is constructed using low-reflectivity mirrors in a waveguide structure with good transverse light confinement. In this regime, standard cavity quantum optics theory breaks down, as the waveguide character o…
We study the interplay between disorder and light-matter coupling by considering a disordered one-dimensional chain of lossy dipoles coupled to a multimode optical cavity, through a microscopically derived Hamiltonian. Such a system, hosting polaritonic excitations, may be realized experimentally in a wide range of platforms under strong light-matter coupling. By analyzing both the eigenspectrum and the driven-dissipative transport properties of our system, we find that in the strong-coupling regime, increasing disorder leads almost uncoupled dark states to acquire a photonic part, allowing th…
Theory versus experiment for vacuum Rabi oscillations in lossy cavities
1996年Brune { \it et al.}利用原子与库相互作用的不同模型，对真空拉比振荡实验进行了分析。与实验拉比振荡数据的协议可以得到，如果一个定义跳跃运营商在修饰状态的基础上，并考虑到属于同一个流形的修饰状态之间的热波动。这种低频跃迁在封闭腔中可以忽略，但实验中使用的腔是开放的，这证明了我们的假设。对应于该数据的腔品质因数是$Q=3.31\cdot 10^{10}$，而实验中报道的$Q$是$Q=7\cdot 10^7$。由腔的打开引起的退相干速率可以与来自有限时间分辨率$Δt$的类似校正具有相同的量级（形式上等效于碰撞退相干）。Peres-Horodecki可分性判据表明，原子-场态接近可分态的速率是由来自同一流形的修饰态之间的涨落控制的，而不是由向基态跃迁的速率控制的.因此，提高$Q$因子并不能提高腔的相干特性。
The Casimir force and the quantum theory of lossy optical cavities
本文给出了零温下两平行平面镜间Casimir力的一种新的推导方法。这两个反射镜和它们包围的腔被视为量子光学网络。它们通常是有损耗的，其特征在于频率相关的反射幅度。从光学定理的表达式中推导出了伴随损耗的附加波动。给出了腔体内部谱密度与内场反射振幅之间关系的一般证明。这个密度决定了真空辐射压力，因此也决定了卡西米尔力。该力作为实频率上的积分获得，包括除了普通波之外的倏逝波的贡献，然后作为虚频率上的积分。该演示仅依赖于真实镜像所服从的一般性质，这也对卡西米尔力的变化施加了一般约束。
Extracting Kinetic Information from Short-Time Trajectories: Relaxation and Disorder of Lossy Cavity Polaritons
本研究基于转移张量方法（TTM）提出数值方案，可从少量短时轨迹提取有损腔极化激元的动力学信息，并推广至无序系统，为研究腔损耗、无序与协同性的相互作用提供高效工具。
Quantum technologies able to manipulating single quantum systems, are presently developing. Among the dowries of the quantum realm, entanglement is one of the basic resources for the novel quantum revolution. Within this context, one is faced with the problem of protecting the entanglement when a system state is manipulated. In this paper, we investigate the effect of the classical driving field on the generation entanglement between two qubits interacting with a bosonic environment. We discuss the effect of the classical field on the generation of entanglement between two (different) qubits a…
The Langevin noise approach for quantization of macroscopic electromagnetics for three-dimensional, inhomogeneous environments is compared with normal mode quantization. Recent works on the applicability of the method are discussed, and several examples are provided showing that for closed systems the Langevin noise approach reduces to the usual cavity mode expansion method when loss is eliminated.
Charging Dicke and Tavis--Cummings quantum batteries with a $\mathcal{PT}$-symmetric lossy--gain cavity pair
研究宇称-时间对称损耗-增益腔对下Dicke和Tavis-Cummings量子电池的充电，发现破缺相提升能量、功率和ergotropy，最优工作点靠近奇异点。
We present a quantized quasinormal approach to rigorously describe coupled lossy resonators, and quantify the quantum coupling parameters as a function of distance between the resonators. We also make a direct connection between classical and quantum quasinormal modes parameters and theories, offering new and unique insights into coupled open cavity resonators. We present detailed calculations for coupled microdisk resonators and show striking interference effects that depend on the phase of the quasinormal modes, an effect that is also significant for high quality factor modes. Our results de…
We investigate theoretically the temporal evolution of a squeezed state in lossy coupled-cavity systems. We present a general formalism based upon the tight binding approximation and apply this to a two-cavity system as well as to a coupled resonator optical waveguide in a photonic crystal. We derive analytical expressions for the number of photons and the quadrature noise in each cavity as a function of time when the initial excited state is a squeezed state in one of the cavities. We also analytically evaluate the time dependant cross correlation between the photons in different cavities to …
We present an integrated source of counterpropagating entangled states based on a coupled resonator optical waveguide that is pumped by a classical pulsed source incident from above the waveguide. We investigate theoretically the generation and propagation of continuous variable entangled states in this coupled-cavity system in the presence of intrinsic loss. Using a tight-binding approximation, we derive analytic time-dependent expressions for the number of photons in each cavity, as well as for the correlation variance between the photons in different pairs of cavities, to evaluate the degre…
Fundamental sensitivity limit of lossy cavity-enhanced interferometers with external and internal squeezing
本文推导了存在光学损耗时腔与压缩光增强干涉仪的基本灵敏度极限，证明通过引入额外的内部压缩操作可有效减轻读出损耗并达到最佳灵敏度，为真实场景下最优传感器的开发奠定了基础。
Fate of Quantum Scars and Chaos-Assisted Tunneling under Dissipation
通过耦合双组分玻色-约瑟夫森结与有损腔，研究开放耦合顶-迪克模型中的非平衡现象，发现光子损耗诱导自发同步和瞬态混沌，并识别两种耗散量子疤痕。
Dissipative stabilization of entangled qubit pairs in quantum arrays with a single localized dissipative channel
该研究针对含单个局域耗散通道的量子阵列，通过调控耗散与局域相互作用，实现了多对远距离无直接相互作用量子比特的稳态纠缠，为量子纠缠的耗散稳定制备提供了可行方案。
Lossy Micromaser Battery: Almost Pure States in the Jaynes-Cummings Regime
本文研究了基于微波激射器的量子电池模型，发现相干充电协议优于非相干协议，能实现有效的纯稳态；在引入腔损耗后，电池性能在中等耗散率下仅略有下降，证明其是稳健可靠的实验模型。
Unconventional saturation effects at intermediate drive in a lossy cavity coupled to few emitters
本文在Tavis-Cummings模型中提出并表征了一种利用大腔体耗散率、在中等驱动强度下由相消干涉产生的非常规非线性饱和效应，给出临界驱动强度解析式，并展示其在量子态工程和腔-发射体系统表征中的应用潜力。
Theory versus experiment for vacuum Rabi oscillations in lossy cavities (II): Direct test of uniqueness of vacuum
本文继续我们在第一部分[Phys. Rev. A { \bf 79}，033836（2009）]中开始的真空拉比振荡的分析。在这里，我们集中在两个不同类别的谐振子李代数表示腔QED的实验结果。零温度主方程，在第一部分中推导出的代数的不可约表示，重新制定在一个可约表示模型电磁场的气体谐振子波包。该表示被称为引入自动正则化，在不可约表示将不得不由特设参数证明。基于这种表示的预测的特点是在热力学极限由一个单一的参数$ς$，负责崩溃和复苏的拉比振荡在精确的真空。在极限$ς\to\infty$中，崩溃和复活消失。有限$ς$的观测意味着腔量子场由非维特曼理论描述，其中真空态是有限粒子玻色子振荡气体的零温度玻色-爱因斯坦凝聚体，因此是非唯一的。在Brune { \it et al.}的实验中收集的数据[Phys. Rev. Lett. { \bf{76} }，1800（1996）]与任何$ς>400$一致。
Accuracy of a teleported trapped field state inside a single bimodal cavity
我们提出了一个简化的方案，从一个模式到另一个相同的双模损耗腔的相干态的叠加隐形传态。基于目前的实验能力，我们提出了一个计算的保真度，可以实现，证明准确的隐形传态，如果每个模式的平均光子数是最多1.5。我们的方案也适用于相干态从一个腔的一个模式到另一个腔的另一个模式的隐形传态，两个腔都嵌入在一个共同的水库。
C++QED: An object-oriented framework for wave-function simulations of cavity QED systems
我们提出了一个有效地进行Monte Carlo波函数模拟腔QED与运动粒子的框架。它在很大程度上依赖于C++中实现的面向对象编程范式，并且可扩展和适用于模拟开放的相互作用量子动力学。为用户提供了许多"元素“，例如泵浦移动粒子、泵浦损耗腔模式和各种相互作用，以组成复杂的相互作用系统，该系统包含在各种配置的电磁场中移动的若干粒子，并对这些系统进行波函数模拟。提供了一些工具，以促进新要素的实施。
Coherent control of long-distance steady state entanglement in lossy resonator arrays
我们表明，相干控制的稳态长距离纠缠对腔原子系统之间的阵列中的损耗和驱动耦合谐振腔是可能的。腔掺杂有原子，并且根据实施方式通过波导、其他腔或光纤连接。我们发现，通过调节驱动场之间的相位差，可以相干地控制稳态纠缠。尽管泵是经典场，它也可以高得惊人。对于连接元件可以是光纤的一些实现方式，可以建立长距离稳态量子相关。此外，当它们的直接耦合比它们与第三方的单独耦合小得多时，任何对的纠缠都达到最大。这种效应让人想起了使用经典相干场在其他非耦合原子能级之间建立相干性。我们提出了一种方法来测量这种纠缠，通过分析从阵列发射的光子的相关性，并分析上述结果的系统参数，不同的网络几何形状和可能的实现技术的范围内的值。
Dissipation-enhanced scrambling in the SYK model coupled to a lossy cavity
本文研究与损耗腔耦合的Yukawa-Sachdev-Ye-Kitaev模型，发现耗散可增强其 scrambling 效应，确定了临界玻色子费米子比γ_c≈2/p²，揭示了不同参数下的丰富动力学行为。
State-dependent photon blockade via quantum-reservoir engineering
有耗驱动非线性腔中光场或微波场的任意初始态在稳态极限下可以变为真空态和单光子态的部分非相干叠加。这种效应被称为单光子阻塞，这通常是分析克尔型非线性腔参数驱动的单光子过程假设单光子损失机制。我们研究光子封锁工程通过压缩水库，即，一个量子库，其中只允许双光子吸收。也就是说，我们分析了一个有损非线性腔参数驱动的双光子过程，并允许双光子损耗机制，所描述的主方程推导出的双光子吸收水库。利用色散极限下的Jaynes-Cummings相互作用，可调谐二能级系统的线性腔可以实现非线性腔工程。我们证明，通过适当地调节驱动场和二能级系统的频率，腔场的稳态可以是单光子Fock态，也可以是多个Fock态与光子数的部分非相干叠加态，例如，（0，2）、（1，3）、（0，1，2）或（0，2，4）。我们观察到，任意初始相干或非相干叠加的Fock态与一个偶数（奇）光子数可以变成部分非相干叠加的几个Fock态相同的光子数宇称。任意初始态的一般解是上述两个解的加权混合，其中光子数为偶数和奇数，权重分别由测量初始腔场的光子数为偶数和奇数的概率给出。因此，与标准光子封锁相比，我们证明了工程光子封锁中的稳态可以依赖于其初始状态。
We present a feasible protocol using traveling wave field to experimentally observe negative response, i.e., to obtain a decrease in the output field intensity when the input field intensity is increased. Our protocol uses one beam splitter and two mirrors to direct the traveling wave field into a lossy cavity in which there is a three-level atom in a lambda configuration. In our scheme, the input field impinges on a beam splitter and, while the transmitted part is used to drive the cavity mode, the reflected part is used as the control field to obtain negative response of the output field. We…
We investigate the effects of parity-deformed radiation fields on the dynamics of entanglement transfer to distant noninteracting atom qubits. These qubits are embedded in two separated lossy cavities connected by a leaky fiber, which acts as a cavity buffer with delocalized modes. The process is studied within a single-excitation subspace, the parity-deformed cavity photons allowing the introduction of static local classical fields which function as a control. The mechanism of state transfer is analyzed in comparison to the uncontrolled case. We find that the transfer evolution exhibits an as…
Cavity Field Reconstruction at Finite Temperature
我们提出了一个重建有限温度下有耗腔场的量子态的方案。量子相干性通常被破坏与环境的相互作用，但我们表明，它是可能的，以恢复完整的信息的初始状态（与环境的相互作用之前），使得有可能重建任何$s$参数化的准概率分布，特别是维格纳函数。
Loss induced collective subradiant Dicke behaviour in a multiatom sample
本文报道了$N$二能级原子与电磁场池耦合并紧密位于有耗腔中的精确动力学。在我们的方法的背景下，发现和非常透明的解释稳态辐射捕获效应。我们证明了在$N$原子-腔系统中初始只注入一个激发，损耗机制渐近地驱动物质样品朝向长寿命的集体次辐射Dicke态。所扮演的角色的紧密性的$N$原子相对于这样的合作行为被带到光和仔细讨论。
Overcoming lossy channel bounds using a single quantum repeater node
我们提出了一个方案，用于执行量子密钥分发（QKD），它有可能击败基于通信双方之间的光子直接传输的方案。在我们的提议中，通信双方交换光子，两个量子存储器放在它们之间。这是一个非常简单的量子中继器方案，可以用目前可用的技术实现。理想情况下，其密钥速率与光信道的传输率的平方根成比例，这优于基于直接传输的QKD方案，因为后者的密钥速率最好与传输率成线性比例。考虑到我们的设置中的每个组件的各种不完善之处，我们提出的参数制度，我们的协议优于协议的基础上直接传输。
Analytic solution to the nonlinear generation of squeezed states in a thermal bath
本文使用Lindblad主方程研究热浴中损耗光学腔的压缩态非线性产生，推导出正交不确定度演化的精确闭式解，并详细揭示了热环境对正交压缩与二阶相干函数的降低作用。
Quantum information processing via a lossy bus
我们描述了一种方法来执行两个量子位测量和逻辑操作的量子位对，每个相互作用的谐振子自由度（\emph{bus}），但不直接相互作用。我们的方案只使用量子位和总线之间的弱相互作用、零差测量和单量子位操作。与早期的方案相比，这里提出的技术对总线模式中的光子损失非常鲁棒，并且即使当光子损失的速率与量子位总线耦合的强度相当时，也可以高保真地起作用。
We calculate numerically the capacity of a lossy photon channel assuming photon number resolving detection at the output. We consider scenarios of input Fock and coherent states ensembles and show that the latter always exhibits worse performance than the former. We obtain capacity of a discrete-time Poisson channel as a limiting behavior of the Fock states ensemble capacity. We show also that in the regime of a moderate number of photons and low losses the Fock states ensemble with direct detection is beneficial with respect to capacity limits achievable with quadrature detection.
We provide theory and formal insight on the Green function quantization method for absorptive and dispersive spatial-inhomogeneous media in the context of dielectric media. We show that a fundamental Green function identity, which appears, e.g., in the fundamental commutation relation of the electromagnetic fields, is also valid in the limit of non-absorbing media. We also demonstrate how the zero-point field fluctuations yields a non-vanishing surface term in configurations without absorption, when using a more formal procedure of the Green function quantization method. We then apply the pres…
We investigate the quantum measurement noise effects on the dynamics of an atomic Bose lattice gas inside an optical resonator. We describe the dynamics by means of a hybrid model consisting of a Bose--Hubbard Hamiltonian for the atoms and a Heisenberg--Langevin equation for the lossy cavity field mode. We assume that the atoms are prepared initially in the ground state of the lattice Hamiltonian and then start to interact with the cavity mode. We show that the cavity field fluctuations originating from the dissipative outcoupling of photons from the resonator lead to vastly different effects …
Proposal for direct measurement of concurrence via visibility in a cavity QED system
提出了一种直接测量两量子比特腔系统并发度的实验方案。它基于腔QED技术，利用原子作为飞行量子比特，并依赖于原子几率的两粒子可见性与腔系统的并发性的一致性。该方案适用于两量子比特腔系统的任意纯初态。
Quasi-normal mode approach to the local-field problem in quantum optics
有限尺寸偶极辐射体在有耗非均匀结构中辐射的局域场（LF）问题是一个长期存在的具有挑战性的量子光学问题，随着固态制造技术的快速发展，它变得越来越重要。在这里，我们介绍了一个简单而准确的准简正模（QNM）技术来解决这个问题解析地分离的散射问题的贡献，从QNM和镜像偶极子。利用实腔模型来描述损耗色散金纳米棒中的人工原子，我们证明了量子纳米对低频的贡献何时会超过均匀贡献。我们还展示了如何准确地描述表面散射接近金属界面和探索制度时，表面散射占主导地位的真实腔。我们的研究结果提供了一个直观的图像的基础物理的LF问题，并促进了新的光子源内的有损结构的理解。
Correlation functions for quantum dynamics of coupled quasinormal modes and quantum emitters interacting via finite-delay propagating photons
本文提出了一种时间依赖理论，研究了在均匀介质中分离的损耗腔体通过量化 quasi 正常模（QNMs）相互作用的动力学，考虑了量子发射体与电磁场的耦合。
$\mathcal{PT}$-Symmetry induced Bi-Stability in Non-Hermitian Cavity Magnomechanics
本文研究非厄米腔磁力系统中PT对称性诱导的光子与磁子双稳态行为，揭示PT破缺构型、磁子-光子耦合及行波场强度对双稳态的调控机制。
We study the problem of designing optical receivers to discriminate between multiple coherent states using coherent processing receivers---i.e., one that uses arbitrary coherent feedback control and quantum-noise-limited direct detection---which was shown by Dolinar to achieve the minimum error probability in discriminating any two coherent states. We first derive and re-interpret Dolinar's binary-hypothesis minimum-probability-of-error receiver as the one that optimizes the information efficiency at each time instant, based on recursive Bayesian updates within the receiver. Using this viewpoi…
扫码添加微信好友，提出您的宝贵建议 👇
💡 备注请填写：网站反馈
发表机构由 AI 从论文文本抽取，如发现错误，欢迎反馈修正建议。