Quantum Computation with Coherent States, Linear Interactions and Superposed Resources
T. C. Ralph, W. J. Munro, G. J. Milburn
我们证明了以相干态为逻辑量子比特的量子计算电路可以用非常简单的线性网络、条件测量和相干叠加资源态来构造。
We show that quantum computation circuits with coherent states as the logical qubits can be constructed using very simple linear networks, conditional measurements and coherent superposition resource states.
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Superposed Coherent and Squeezed Light
我们首先计算叠加相干光和压缩光的平均光子数和正交方差，然后结合哈密顿量和使用通常的叠加光束的正交方差定义的基础上的分析过程。这一分析过程导致相干光的平均光子数和叠加光的正交方差在物理上是不合理的。然后，我们确定这两个属性采用的分析过程的基础上叠加的Q函数和应用稍微修改的定义的正交方差的一对叠加光束。求出了相干光的平均光子数和叠加光的正交方差。此外，叠加输出光的正交压缩与叠加腔光的正交压缩相等。
Superposed Coherent States improve fidelity of NOON states generated in post-selection
在分束器中混合压缩真空和相干态产生电磁场的NOON态，但保真度小于1。本文指出，如果用叠加相干态代替压缩真空，分束器的输出将产生单位保真度的NOON态。此外，NOON状态的后选择概率被示出为更高。
Elementary gates for quantum information with superposed coherent states
提出了一种在相干态基上实现量子比特的基本量子门的新方法。操作是概率性的，并采用单光子减法作为驱动力。我们的单量子比特相位门和双量子比特控制相位门方案能够利用现有资源实现任意大的相移，这使得它们适合于不久的将来叠加相干态量子信息处理的测试。
With the aid of the solutions of the Quantum Langevin equations, we have calculated the Q-functions for the two-mode coherent and subharmonic cavity light beams. We have then determined the Q-function for the superposed two-mode coherent and subharmonic cavity light beams. With the help of the pertinent Q-functions for cavity light beams, we determined the photon statistics, quadrature statistics, and entanglement. we have obtained that the superposed two-mode coherent and subharmonic cavity light beams are in a squeezed state and the squeezing occurs in the plus quadrature. Besides, our analy…
Near-Complete Teleportation of a Superposed Coherent State
四个Bell型纠缠相干态，|α>|-α> \pm|-α>| α>和|α>| α> \pm|-α>|-α>，可以仅使用线性光学装置以高概率区分，只要|α|不算太小。基于这一观察，我们提出了一个简单的方案，几乎完全隐形传送叠加相干态。完成隐形传态所需的非幺正变换可以通过将接收者的场态嵌入由场和单个原子组成的更大的希尔伯特空间中并在该希尔伯特空间上执行幺正变换来实现。
Weak force detection with superposed coherent states
我们研究了简谐振子的非经典态，特别是相干态的叠加态在灵敏力检测中的应用。我们发现，像压缩态的相干态的叠加允许海森堡极限位移测量。与具有相同平均光子数的单模叠加态相比，纠缠多个相干态的叠加提供了显著的优势。
We study a superposed weak coherent state that can fundamentally mimic an ideal single photon not only with respect to the number of photons but also in terms of an indeterminate phase. It is close to the single-photon state with high fidelity and exhibits fundamental features of single photons such as antibunching and Hong-Ou-Mandel interference. The emergence and vanishing of single-photon characteristics can be directly observed by changing two parameters, i.e., the mean photon number and number of phases. Our result shows that the uncertainty between the photon number and phase indeed cons…
Fractional revivals of superposed coherent states
我们研究了一个特定的非线性哈密顿量中叠加波包的动力学，该哈密顿量模拟了克尔介质中的波包传播和玻色-爱因斯坦凝聚体的动力学。利用期望值、Rényi熵和Wigner函数分析了初始波包叠加对分数回复时间的依赖性。我们还展示了如何选择性识别的分数恢复使用适当的观测量的时刻取决于在初始状态中存在的波包的数量。
We consider the problem of bi-directional controlled quantum teleportation of information encoded in phase opposite coherent state among two distant partners Alice and Bob, with the consent of controller, Charlie. We use five-mode cluster-type entangled coherent state as the quantum resource to achieve this task. The scheme uses linear optical devices such as beam splitter, phase shifters, and photon counters. We have shown that for moderately large coherent amplitude, near-perfect bi-directional controlled teleportation can be obtained in terms of the average fidelity of teleportation.
Catability as a metric for evaluating superposed coherent states
本文提出一种新的可测量标准，用于检测量子态中的猫态特征，通过非线性压缩概念，无需全态成像即可在保真度失效时揭示结构，验证了其在损耗下的鲁棒性和实验可行性。
Superconducting quantum systems (artificial atoms) have been recently successfully used to demonstrate on-chip effects of quantum optics with single atoms in the microwave range. In particular, a well-known effect of four-wave mixing could reveal a series of features beyond classical physics, when a non-linear medium is scaled down to a single quantum scatterer. Here we demonstrate a phenomenon of the quantum wave mixing (QWM) on a single superconducting artificial atom. In the QWM, the spectrum of elastically scattered radiation is a direct map of the interacting superposed and coherent photo…
Quantum Discord and Entanglement in Quasi-Werner States Based on Bipartite Superposed Coherent States
最近，作者[arXiv quant-ph 1209.3706]研究了基于四个纠缠相干态的Werner混合态的量子不协调，并将其与形成纠缠进行了比较，这四个纠缠相干态用于单比特信息的量子隐形传态.本文考虑两个更一般的二体叠加相干态，得到两个准Werner态。我们研究了这些态的量子不和谐和形成纠缠，并对它们进行了比较。
Controlled quantum teleportation of superposed coherent states using GHZ entangled 3-mode coherent states is studied. Proposed scheme can be implemented experimentally using linear optical components such as a symmetric lossless beam splitter, two phase-shifters and two photon counters. Fidelity is found close to unity for appreciable mean number of photons in coherent states and is 0.99 for mean photon number equal to two.
Increasing Average Fidelity by Using Non-Maximally Entangled Resource in Teleportation of Superposed Coherent States
研究了利用非最大纠缠相干态作为量子信道传送叠加相干态的问题，研究了纠缠度对量子隐形传态质量的影响。我们证明了如果Van Enk和Hirota [Phys. Rev. A 64，022313（2001）]和H Prakash等人[Phys. Rev. A 75，044305（2007）]使用的最大纠缠相干态（MECS）被一个特殊的非最大纠缠相干态（NMECS）所取代，则量子隐形传态的平均保真度在小的相干振幅下明显增加。由于产生大相干振幅的叠加相干态是非常具有挑战性的，特定的NMECS似乎是一个很好的量子信道在小相干振幅的隐形传态的实际实施。
We provide an evidence for the validity of strong monogamy inequality of multi-party quantum entanglement using square of convex-roof extended negativity(SCREN). We first consider a large class of multi-qudit mixed state that are in a partially coherent superposition of a generalized W-class state and the vacuum, and provide some useful properties about this class of states. We show that monogamy inequality of multi-qudit entanglement in terms of SCREN holds for this class of states. We further show that SCREN strong monogamy inequality of multi-qudit entanglement also holds for this class of …
Lower- versus higher-order nonclassicalities for a coherent superposed quantum state
本文研究相干态上叠加湮灭与产生算符所得量子态的非经典性，发现高阶判据比低阶条件更能有效检测非经典性。
Improving the probabilistic quantum teleportation efficiency of arbitrary superposed coherent state using multipartite even and odd j-spin coherent states as resource
提出利用多体偶奇j自旋相干态作为纠缠资源，通过重复GHZ态测量实现任意叠加相干态的高效概率量子隐形传态，显著提升平均保真度与成功概率。
We show how to make quantum networks, both standard and entanglement-based, genuine quantum by providing them with the possibility of handling superposed tasks and superposed addressing. This extension of their functionality relies on a quantum control register, which specifies not only the task of the network, but also the corresponding weights in a coherently superposed fashion. Although adding coherent control to classical tasks, such as sending or measuring -or not doing so-, is in general impossible, we introduce protocols that are able to mimick this behavior under certain conditions. We…
Detecting nonclassicality and non-Gaussianity of a coherent superposed quantum state
本文通过将湮灭与产生算符的相干叠加作用于经典相干态构造 CSQS，并利用 Wigner 函数、线性熵、Wigner 对数负性、skew information 及相对熵等多种判据系统研究其非经典性与非高斯性，同时考察光子损耗信道下噪声对这些性质的影响。
A generic qubit unitary operator affected by quantum noise is duplicated and inserted in a coherently superposed channel, superposing two paths offered to a probe qubit across the noisy unitary, and driven by a control qubit. A characterization is performed of the transformation realized by the superposed channel on the joint state of the probe-control qubit pair. The superposed channel is then specifically analyzed for the fundamental metrological task of phase estimation on the noisy unitary, with the performance assessed by the Fisher information, classical or quantum. A comparison is made …
Superposition of two nonlinear coherent states $\fracπ{2}$ out of phase and their nonclassical properties
考虑到“{ \it非线性相干态}"的概念，我们将通过引入相位不同的{$\fracπ{2}$“两类非线性相干态的叠加”}来研究干涉效应。并将其应用于“和谐态”、“SU（1，1）相干态”和“囚禁离子的质心运动”等物理系统。最后，对叠加态的亚泊松统计、正交压缩、振幅平方压缩和Wigner分布函数等非经典性质进行了数值研究。特别地，正如我们将观察到的，叠加态的维格纳函数在相空间中取负值，而它们的原始分量不取负值。
Performance of a two-mode coherent superposed channel in continuous-variable quantum teleportation
引入双模叠加算符构造双模相干叠加态，通过Wigner分布和Wigner对数负性研究其非经典性和非高斯性，并作为纠缠资源用于Braunstein-Kimble连续变量隐形传态，分析非经典性和非高斯性对保真度的影响，发现特定参数下保真度超过经典阈值。
The MC-QTAIM analysis reveals an exotic bond in the coherently quantum superposed Malonaldehyde
本研究利用MC-QTAIM分析相干量子叠加的丙二醛，发现质子离域导致氢盆地消失，形成两个杂化氧-氢盆地，并通过前所未有的经典库仑机制稳定，产生一种化学中未知的新奇键。
A spin-coherent semiconductor photo-detector for quantum communication
我们描述了如何在半导体器件中将量子信息从光子极化转移到电子自旋。量子信息的传递依赖于光学跃迁的选择规则，使得两个叠加的光子偏振激发两个叠加的自旋态。通过使用单个非简并初始价带来防止电子自旋状态与剩余空穴的自旋状态的纠缠。应变和静磁场的共同作用可以提高价带的简并度。我们给出了一个半导体结构的详细描述，转移光子极化电子自旋相干，并允许电子自旋被存储，并可用于量子信息处理。
Direct and Efficient Detection of Quantum Superposition
本文提出利用XOR游戏通过局部测量和独立粒子验证量子叠加，实现高效检测，以单光子实验展示99%置信度。
Electrical control of superposed quantum states evolution in quantum dot molecule by pulsed field
量子计算（或一般来说，量子信息处理）是主要的兴趣，因为它可能对目前的电子和计算产生重大影响1 -5。量子计算的本质是直接使用量子力学态的叠加和纠缠，这些量子力学态在纳米级粒子（如原子和分子）中非常明显6，7。另一方面，报道了关于实现半导体量子点（QD）量子比特8、9和QD量子门10的许多提议，并且成功地发现了若干实验线索11 -16。虽然这些开创性的实验开辟了半导体量子点量子计算的基础，但在时域17中叠加态的直接电控制尚未实现。在这里，我们证明了量子点分子中叠加量子态演化的相干控制。短的电脉冲被示出为将单电子注入到QD分子中，并且在衬底处收集的电流表现出作为脉冲宽度的函数的振荡。这种振荡是由于量子点分子的对称态（S）和反对称态（AS）的不同衰减速率以及注入脉冲宽度控制的占据几率的演化引起的
Tailorable couplings of a cantilever with a superconducting charge qubit: Quantum state engineering
我们提出了一个理论方案来实现悬臂梁和超导电荷量子比特之间的可剪裁耦合。通过调节量子比特的可控参数，可以实现悬臂梁和量子比特之间的线性和非线性耦合。在此基础上，通过对量子比特的操纵和探测，我们将悬臂梁制备成一些有趣的量子态，如叠加相干态和压缩态。我们还研究了环境对悬臂梁量子态的影响。结果表明，环境诱导的退相干可以驱动悬臂梁从叠加相干态进入稳定相干态。在一定的临界温度下，环境可以诱导悬臂梁的稳态位置压缩。这些结果将为悬臂梁非经典效应的产生提供新的思路。
Coherent superpositions are one of the hallmarks of quantum mechanics and are vital for any quantum mechanical device to outperform the classically achievable. Generically, superpositions are verified in interference experiments, but despite their longstanding central role we know very little about how to extract the number of coherently superposed amplitudes from a general interference pattern. A fundamental issue is that performing a phase-sensitive measurement is as challenging as creating a coherent superposition, so that assuming a perfectly implemented measurement for verification of qua…
Quantum state engineering by a coherent superposition of photon subtraction and addition
研究了作用于连续变量系统的场湮灭和场产生算符的相干叠加，并提出了它在量子态工程中的应用。具体来说，它是如何的叠加操作转换成一个经典的非经典的一个，以及新兴的非经典效应。我们还提出了一个实验方案来实现这种基本的相干操作，并讨论了它的有用性，以产生一个任意的叠加数的状态，涉及到两个光子。
Generation of quantum entanglement in superposed diamond spacetime
该研究提出因果钻石时空叠加框架，首次推导叠加时空中狄拉克场的Unruh-钻石真空态解析表达式，发现时空叠加可产生额外纠缠资源，为量子信息处理提供新途径。
Generating Fock-state superpositions from coherent states by selective measurement
本文提出一种无需精心驱动、仅通过谐振器与辅助量子比特的Jaynes-Cummings耦合演化及选择性投影测量，即可从相干态高效生成高保真Fock态及其叠加态和Bell类态的量子测量协议。
Quantum Simulation of Oscillatory Unruh Effect with Superposed Trajectories
本研究利用激光控制的囚禁离子模拟振荡探测器与腔场耦合，实验验证了Unruh效应，并首次模拟了叠加量子轨迹下的相干干涉，为探索量子引力现象提供了新途径。
Optical Implementation of Non-locality with Coherent Light Fields for Quantum Communication
基于Stapp的非定域性公式，利用相干光场观测了两个远距离观测者的偏振相关。利用50/50分束器变换，发现垂直偏振相干光场与水平偏振相干噪声场纠缠。在分束器的每个输出端口处的叠加光场被发送到两个远距离的观察者，在每个观察者处通过使用四分之一波片和检偏器来干涉和操纵场。干涉信号中含有检偏器的投影角信息，但被相位噪声所掩盖。通过模拟信号乘法分析两个远距离观测者的数据，建立了两个远距离观测者的投影角之间的非局部相关性，而无需任何后选择技术。该方案可用于实现Ekert的量子密钥分发协议。
The entangled Schrodinger cat state obtained immediately upon measurement of a superposed two-state quantum system is often considered paradoxical because it appears to predict two macroscopically different outcomes, such as an alive and dead cat. However, nonlocal interferometry experiments testing momentum-entangled photon pairs over all phases demonstrate that the cat state does not fit this description and is not paradoxical. Both experiment and theory imply that it instead represents a superposition of two nonlocally coherent (i.e. phase-dependent) statistical correlations between its sub…
Quantum Discord and Entanglement of Quasi-Werner States based on Entangled Coherent States
研究了最近用于量子比特量子隐形传态的四个二分纠缠相干态（ECS）所形成的Werner态的量子不和谐和量子纠缠.其中，两个基于最大ECS的量子态与完美Werner态完全相似，而其余两个基于非最大ECS的量子态被称为准Werner态，它们的量子不和谐和纠缠依赖于相干振幅和测量基。
Experimental Communication Through Superposition of Quantum Channels
该研究针对量子信道叠加的信息容量提升问题，对比去极化量子比特信道、叠加信道与qutrit信道的最大相干信息，发现扩展的qutrit信道描述本身即可解释容量提升，无需叠加效应。
In a thermal ensemble of atoms driven by coherent fields, how does evolution of quantum superposition compete with classical dynamics of optical pumping and atomic diffusion? Is it optical pumping that first prepares a thermal ensemble, with coherent superposition developing subsequently or is it the other way round: coherently superposed atoms driven to steady state via optical pumping? Using a stroboscopic probing technique, here we experimentally explore these questions. A 100 ns pulse is used to probe an experimentally simulated, closed three-level, lambda-like configuration in rubidium at…
Unidirectional Cyclic Quantum Teleportation of Arbitrary Schrodinger Cat Coherent-states via Bell Coherent-States
该研究以三个 Bell 相干态簇为信道，结合线性光学器件与光子数分辨探测，实现三方间任意薛定谔猫相干态的单向循环量子隐形传态，并分析保真及近保真情形的成功概率。
We observe the polarization squeezing in the mixture of a two mode squeezed vacuum and a simple coherent light through a linear polarization beam splitter. Squeezed vacuum not being squeezed in polarization, generates polarization squeezed light when superposed with coherent light. All the three Stokes parameters of the light produced on the output port of polarization beam splitter are found to be squeezed and squeezing factor also depends upon the parameters of coherent light.
Bounds on positive operator-valued measure based coherence of superposition
该研究将相干性资源理论推广至POVM测量，解析推导了叠加纯态相干性的上下界，并用示例验证，可用于估计叠加态相干性范围。
We investigate the realization of conditional displacement interaction in the transversal direction in ultrastrongly coupled circuit quantum electrodynamics by adjusting parameters of external magnetic fields. The special interaction is derived in the system of charge qubit(s) coupled to a LC resonator. We consolidate the implementation of quantum gates and the generation of superposed coherent states based on the transversal conditional displacement interaction numerically. The conditional displacement interaction in the ultrastrong coupling regime enhances quantum process to operate at the t…
Testing Catability and Coherent Superposition of $2\mathcal{D}$ Graphene Quantum system
本文提出利用可降解性作为相敏度度量，结合李代数与格林函数理论，研究石墨烯量子系统的相干叠加与干涉稳定性。
We investigate coherent perfect absorption (CPA) in quantum optics, in particular when pairs of squeezed coherent states of light are superposed on an absorbing beam splitter. First, by employing quantum optical input-output relations, we derive the absorption coefficients for quantum coherence and for intensity, and reveal how these will differ for squeezed states. Secondly, we present the remarkable properties of a CPA-gate: two identical but otherwise arbitrary incoming squeezed coherent states can be completely stripped off their coherence, producing a pure entangled squeezed vacuum state …
Coherent state LOQC gates using simplified diagonal superposition resource states
本文探讨了对相干态光量子计算门进行基本测试的可能性[T. C. Ralph，et.等人，Phys.Rev.A \textbf{68}，042319（2003）]，使用复杂但并非不切实际的量子态。这些门所需的主要资源是与基态对角的状态。我们利用最近的观察，压缩单光子态（$\hat{S}(r) \ket{1}$）很好地近似于相干态（$\ketα - \ket{-α}$）的奇叠加来解决对角资源问题。该近似仅适用于相对较小的$α$，因此这些门不能用于可缩放方案中。我们探讨了量子隐形传态和旋转阿达玛门对量子数和概率的影响。
Quantum coherence, emerging from the 'superposition' of quantum states, is widely used in various information processing tasks. Recently, the resource theory of multilevel quantum coherence is attracting substantial attention. In this paper, we mainly study the deterministic transformations of resource pure states via free operations in the theoretical framework for multilevel coherence. We prove that any two multilevel coherent resource pure states can be interconverted with a nonzero probability via a completely positive and trace non-increasing $k$-coherence-preserving map. Meanwhile, we pr…
Quantum information processing tasks require exotic quantum states as a prerequisite. They are usually prepared with many different methods tailored to the specific resource state. Here we provide a versatile unified state preparation scheme based on a driven quantum network composed of randomly-coupled fermionic nodes. The output of such a system is then superposed with the help of linear mixing where weights and phases are trained in order to obtain desired output quantum states. We explicitly show that our method is robust and can be utilized to create almost perfect maximally entangled, NO…
Effects of dynamical phases in Shor's factoring algorithm with operational delays
理想量子算法通常假设量子计算是通过一系列幺正变换连续进行的。然而，在实际的量子计算过程中，连续操作之间总是存在空闲的有限时间间隔。在这些延迟期间，相干“误差”将从叠加的波函数的动态相位累积。在这里，我们将探讨肖尔的量子因子分解算法的敏感性，这样的错误。我们的研究结果清楚地表明了严重的敏感性Shor的因式分解算法之间的连续酉变换的延迟时间的存在。具体地，在存在这些{ \it相干“错误”}的情况下，获得正确答案的概率随着工作寄存器的量子位的数量呈指数下降。本文提出了一种特别简单的相位匹配方法，以{ \it避免}或抑制这些{ \it相干错误}时，使用Shor的算法因式分解整数。这个相位匹配条件的鲁棒性进行评估分析或数值分解的几个整数：$4, 15, 21$，和33。
Control at the interface between the classical and the quantum world is fundamental in quantum physics. In particular, how classical control is enhanced by coherence effects is an important question both from a theoretical as well as from a technological point of view. In this work, we establish a resource theory describing this setting and explore relations to the theory of coherence, entanglement and information processing. Specifically, for the coherent control of quantum systems the relevant resources of entanglement and coherence are found to be equivalent and closely related to a measure…
Unambiguous identification of coherent states II: Multiple resources
我们考虑了电磁场相干态的无模糊识别。特别地，我们研究了M. Sedlák { \it等}，Phys. Rev. A { \bf 76}，022326（2007）。我们展示了如何在一般情况下，可以进行明确的识别相干态时，多个副本的未知和参考状态。我们还研究了测量后的参考状态是否可以“恢复”，并进一步用于后续的明确识别任务。我们表明，尽管事实上，恢复的参考状态被干扰的测量，它们可以被反复用于明确的标识。我们分析了各种不完善的作用，在准备的未知和参考相干态上的性能，我们的明确的识别设置。
Optical synthesis of large-amplitude squeezed coherent-state superpositions with minimal resources
我们提出并实验实现了一种新的通用协议，允许量子态工程预示的光学相干态叠加。该方案依赖于双模压缩态、线性混频和$n$光子探测。它最好使用昂贵的非高斯资源来构建目标状态的关键非高斯部分。在基于高效率超导纳米线单光子探测器的双光子探测的实验情况下，自由传播状态表现出67%的保真度，具有尺寸为$|α|^2$ =3的压缩均匀相干态叠加。所演示的过程和实现的速率将有助于在后续协议中使用这种叠加，包括基本测试和光学混合量子信息实现。
In this paper, we detail an orthogonalization procedure that allows for the quantification of the amount of coherence present an arbitrary superposition of coherent states. The present construction is based on the quantum coherence resource theory introduced by Baumgratz et al., and the coherence resource monotone that we identify is found to characterize the nonclassicality traditionally analyzed via the Glauber-Sudarshan $P$ distribution. This suggests that identical quantum resources underlie both quantum coherence in the discrete finite dimensional case and the nonclassicality of quantum l…
Resource Optimisation of Coherently Controlled Quantum Computations with the PBS-calculus
本文改进PBS演算这一相干控制图形语言，提出最小化预言机查询次数的高效方法，并针对同时优化查询次数与偏振分束器数量的NP难问题给出启发式算法。
Resource-based reliability of quantum-coherent devices
针对量子器件未进入固定失效子空间时的资源丢失问题，提出基于资源的可靠性框架，将其应用于量子随机数发生器与干涉仪，结合多自旋模型与模拟验证，实现任务特定的可靠性评估。
Coherent error threshold for quantum LDPC codes
本研究证明一般量子LDPC码对局部相干噪声具有非零码容量阈值，通过簇重求和技术，在距离为对数阶时实现逻辑恢复误差随码距离指数衰减，为容错量子计算提供鲁棒性保证。
Experimental virtual distillation of entanglement and coherence
本研究在光子量子系统上实验实现虚拟资源蒸馏协议，突破传统蒸馏限制，完成四维相干及单拷贝EPR对纠缠的虚拟蒸馏，提升了量子隐形传态保真度，为含噪硬件操控量子资源提供了可行路径。
Quantum Metrology: Detection of weak forces using Schrodinger Cat resources
我们研究了简谐振子的非经典态（相干态的叠加）在灵敏力检测中的应用。我们发现，像压缩态的相干态的叠加允许在海森堡极限位移测量的检测。与具有相同平均光子数的单模叠加态相比，纠缠多个相干态的叠加提供了显著的优势。
Natural mode entanglement as a resource for quantum communication
在相干超冷原子气体中，自然粒子数纠缠存在于空间模之间。然而，对模式的操作受到超选择规则的限制，该规则禁止不同粒子数的相干叠加。这似乎阻止了模式纠缠被用作量子通信的资源。在本文中，我们证明了尽管存在超选择规则，单个大质量粒子的模式纠缠仍然可以用于密集编码和量子隐形传态。特别是，我们提供的方案，其中密集编码线性光子信道容量达到没有共享水库和充分的量子信道的能力，如果双方共享一个相干粒子水库。
Reducing quantum resources for observable estimation with window-assisted coherent QPE
本文研究窗口辅助的相干 QPE 作为子例程估计可观测量的量子任务，通过加窗和改进块编码技术，将 Toffoli 门数量减少两个数量级以上，并提供了窗口函数改善复合算法误差的模型。
Quantum teleportation between a continuous-variable optical qumode and a discrete-variable solid-state qubit
本文提出一种利用混合纠缠将连续变量光量子比特隐形传态至离散变量固态量子比特的方案，通过仅依赖光零差检测和自旋极化测量的新贝尔态测量方法，在现实噪声下仍可实现超越经典极限的保真度。
Symmetry-resolved parent Hamiltonians for entangled bosonic cat resources
研究多模玻色子猫态资源态的母哈密顿量，通过振荡器算子构建，分离通用分支哈密顿量与状态相关约束哈密顿量，去除低能流形简并，给出多种猫态的显式母哈密顿量，搭建相干态与量子信息处理间桥梁。
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