Multi-photon-addition amplified coherent state

• URL: http://arxiv.org/abs/2207.10452v1
• Date: Thu, 21 Jul 2022 12:48:09 GMT
• Title: Multi-photon-addition amplified coherent state
• Authors: Xue-feng Zhan, Qiang Ke, Min-xiang Li, and Xue-xiang Xu
• Abstract summary: State $hatadag mghatnleftvert alpha rightrangle $ are same to state $hatadag mleftvert galpha rightrangle $, which is called as multi-photon-addition amplified coherent state (MPAACS) by us.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: State $g^{\hat{n}}\hat{a}^{\dag m}\left\vert \alpha \right\rangle $ and state $\hat{a}^{\dag m}g^{\hat{n}}\left\vert \alpha \right\rangle $ are same to state $\hat{a}^{\dag m}\left\vert g\alpha \right\rangle $, which is called as multi-photon-addition amplified coherent state (MPAACS) by us. Here, $\hat{n}$, $\hat{a}^{\dag }$, $\left\vert \alpha \right\rangle $, $g$ ( $\geq 1$), and $m$ are photon number operator, creation operator, coherent state, gain facor, and an interger, respectively. We study mathematical and physical properties for these MPAACSs, including normalization, photon component analysis, Wigner function, effective gain, quadrature squeezing, and equivalent input noise. Actually, the MPAACS, which contains more nonclassicality, is an amplified version of photon-added coherent state (PACS) introduced by Agrwal and Tara [Phys. Rev. A 43, 492 (1991)]. Our work provides theoretical references for implementing amplifiers for light fields.

Related papers

• On Quantum Channel Learning [0.0]
  It is shown that a quadratic on $mathcalU$ fidelity can be constructed by considering $sqrtrho(l) to sqrtvarrho(l)$ mapping, and on a general quantum channel of Kraus rank $N_s$. The approach can be applied to study decoherence effects, spontaneous coherence, synchronizing, etc.
  arXiv  Detail & Related papers  (2024-07-05T10:43:24Z)
• Dimension Independent Disentanglers from Unentanglement and Applications [55.86191108738564]
  We construct a dimension-independent k-partite disentangler (like) channel from bipartite unentangled input. We show that to capture NEXP, it suffices to have unentangled proofs of the form $| psi rangle = sqrta | sqrt1-a | psi_+ rangle where $| psi_+ rangle has non-negative amplitudes.
  arXiv  Detail & Related papers  (2024-02-23T12:22:03Z)
• Noiselessly amplified thermal states and after multi-photon addition or subtraction [0.0]
  We introduce a noiselessly amplified thermal state (ATS) by operating the noiseless amplification operator ($ghatn$) on the thermal state. We study photon number distributions (PNDs), purities, and Wigner functions (WFs) for all these states.
  arXiv  Detail & Related papers  (2023-12-03T06:18:45Z)
• Quantum connection, charges and virtual particles [65.268245109828]
  A quantum bundle $L_hbar$ is endowed with a connection $A_hbar$ and its sections are standard wave functions $psi$ obeying the Schr"odinger equation. We will lift the bundles $L_Cpm$ and connection $A_hbar$ on them to the relativistic phase space $T*R3,1$ and couple them to the Dirac spinor bundle describing both particles and antiparticles.
  arXiv  Detail & Related papers  (2023-10-10T10:27:09Z)
• Algebraic Aspects of Boundaries in the Kitaev Quantum Double Model [77.34726150561087]
  We provide a systematic treatment of boundaries based on subgroups $Ksubseteq G$ with the Kitaev quantum double $D(G)$ model in the bulk. The boundary sites are representations of a $*$-subalgebra $Xisubseteq D(G)$ and we explicate its structure as a strong $*$-quasi-Hopf algebra. As an application of our treatment, we study patches with boundaries based on $K=G$ horizontally and $K=e$ vertically and show how these could be used in a quantum computer
  arXiv  Detail & Related papers  (2022-08-12T15:05:07Z)
• Enlarging the notion of additivity of resource quantifiers [62.997667081978825]
  Given a quantum state $varrho$ and a quantifier $cal E(varrho), it is a hard task to determine $cal E(varrhootimes N)$. We show that the one shot distillable entanglement of certain spherically symmetric states can be quantitatively approximated by such an augmented additivity.
  arXiv  Detail & Related papers  (2022-07-31T00:23:10Z)
• Ultrafast adiabatic passages in ultrastrongly coupled light-matter systems [5.574081332554501]
  We find a linear ultrafast adiabatic passage through $vert psirangle$ to fast generate arbitrary single-photon $M$-mode $W$ states. This work reveals the existence of linear ultrafast adiabatic passages in light-matter systems.
  arXiv  Detail & Related papers  (2022-07-02T08:36:02Z)
• Monogamy of entanglement between cones [68.8204255655161]
  We show that monogamy is not only a feature of quantum theory, but that it characterizes the minimal tensor product of general pairs of convex cones. Our proof makes use of a new characterization of products of simplices up to affine equivalence.
  arXiv  Detail & Related papers  (2022-06-23T16:23:59Z)
• Strong Converse Bounds for Compression of Mixed States [3.04585143845864]
  We consider many copies of a general mixed-state source $rhoAR$ shared between an encoder and an inaccessible reference system $R$. For a bipartite state $rhoAR$, we define a new quantity $E_alpha,p(A:R)_rho$. For any rate below the regularization $lim_alpha to 1+E_alpha,pinfty(A:R)_rho$, the fidelity for the visible compression of ensembles of mixed states exponentially
  arXiv  Detail & Related papers  (2022-06-19T14:38:37Z)
• Unified generation and fast emission of arbitrary single-photon multimode $W$ states [15.154573548076446]
  We propose a scheme to generate arbitrary single-photon multimode $W$ states in circuit QED. We could not only generate $W$ states inside resonators but also release them into transmission lines on demand.
  arXiv  Detail & Related papers  (2021-08-25T11:13:24Z)
• Few-Shot Learning via Learning the Representation, Provably [115.7367053639605]
  This paper studies few-shot learning via representation learning. One uses $T$ source tasks with $n_1$ data per task to learn a representation in order to reduce the sample complexity of a target task.
  arXiv  Detail & Related papers  (2020-02-21T17:30:00Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.