Noiselessly amplified thermal states and after multi-photon addition or subtraction

• URL: http://arxiv.org/abs/2312.01298v1
• Date: Sun, 3 Dec 2023 06:18:45 GMT
• Title: Noiselessly amplified thermal states and after multi-photon addition or subtraction
• Authors: Xue-feng Zhan and Xue-xiang Xu
• Abstract summary: 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.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In this paper, we introduce a noiselessly amplified thermal state (ATS), by operating the noiseless amplification operator ($g^{\hat{n}}$) on the thermal state (TS) with corresponding mean photon number (MPN) $\bar{n}$. Actually, the ATS is an new TS with MPN $\bar{N}=g^{2}\bar{n}/[1-\bar{n}\left(g^{2}-1\right)]$. Furthermore, we introduce photon-added-ATS (PAATS) and photon-subtracted-ATS (PSATS) by operating $m$-photon addition ($\hat{a}^{\dag m}$) and $m$-photon subtraction ($\hat{a}^{m}$) on the ATS, respectively. We study photon number distributions (PNDs), purities, and Wigner functions (WFs) for all these states.

Related papers

• 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)
• The quantum beam splitter with many partially indistinguishable photons: multiphotonic interference and asymptotic classical correspondence [44.99833362998488]
  We present the analysis of the quantum two-port interferometer in the $n rightarrow infty$ limit of $n$ partially indistinguishable photons. Our main result is that the output distribution is dominated by the $O(sqrtn)$ channels around a certain $j*$ that depends on the degree of indistinguishability. The form is essentially the doubly-humped semi-classical envelope of the distribution that would arise from $2 j*$ indistinguishable photons, and which reproduces the corresponding classical intensity distribution.
  arXiv  Detail & Related papers  (2023-12-28T01:48:26Z)
• L00L entanglement and the twisted quantum eraser [0.0]
  We show the generation of unbalanced two-photon entanglement in the Laguerre-Gaussian (LG) transverse-spatial degree-of-freedom. Taking a cue from the $N00N$ state nomenclature, we call these types of states $ell 00 ell$-entangled. We find that our generated states have fidelities of 95.31% and 89.80% to their respective ideal maximally entangled states.
  arXiv  Detail & Related papers  (2023-06-23T17:18:25Z)
• $n$-photon blockade with an $n$-photon parametric drive [0.6444363796651332]
  We propose a mechanism to engineer an $n$-photon blockade in a nonlinear cavity with an $n$-photon parametric drive. We study the n-photon blockade in an atom-cavity system, a Kerr-nonlinear resonator, and two-coupled Kerr nonlinear resonators.
  arXiv  Detail & Related papers  (2023-01-07T11:50:44Z)
• Multi-photon-addition amplified coherent state [0.0]
  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.
  arXiv  Detail & Related papers  (2022-07-21T12:48:09Z)
• Quantum density matrix theory for a laser without adiabatic elimination of the population inversion: transition to lasing in the class-B limit [62.997667081978825]
  No class-B quantum density-matrix model is available to date, capable of accurately describing coherence and photon correlations within a unified theory. Here we carry out a density-matrix theoretical approach for generic class-B lasers, and provide closed equations for the photonic and atomic reduced density matrix in the Fock basis of photons. This model enables the study of few-photon bifurcations and non-classical photon correlations in class-B laser devices, also leveraging quantum descriptions of coherently coupled nanolaser arrays.
  arXiv  Detail & Related papers  (2022-05-26T16:33:51Z)
• Distinguishability in quantum interference with the squeezed states [0.0]
  entanglement of photon pairs over the Schmidt modes is one of the sources of distinguishability. The distinguishability is quantified by the symmetric part of the internal state of $n$ pairs of photons.
  arXiv  Detail & Related papers  (2021-09-04T12:42:38Z)
• Entanglement between a telecom photon and an on-demand multimode solid-state quantum memory [52.77024349608834]
  We show the first demonstration of entanglement between a telecom photon and a collective spin excitation in a multimode solid-state quantum memory. We extend the entanglement storage in the quantum memory for up to 47.7$mu$s, which could allow for the distribution of entanglement between quantum nodes separated by distances of up to 10 km.
  arXiv  Detail & Related papers  (2021-06-09T13:59:26Z)
• Quantum non-demolition dispersive readout of a superconducting artificial atom using large photon numbers [0.8049514665620008]
  We present a fluxonium artificial atom in which we measure an overall flat dependence of the transition rates between its first two states. Despite the expected decrease of the dispersive shift with increasing readout power, the signal-to-noise ratio continuously improves with increasing $barn$.
  arXiv  Detail & Related papers  (2020-09-30T16:51:48Z)
• Photon-mediated entanglement scheme between a ZnO semiconductor defect and a trapped Yb ion [58.720142291102135]
  We propose an optical scheme to generate an entangled state between a trapped ion and a solid state donorbit. We show that an entanglement rate of 21 kHz and entanglement fidelity of 94 % can be attained using a weak scheme with reasonable parameters.
  arXiv  Detail & Related papers  (2020-06-25T22:58:54Z)
• Bosonic quantum communication across arbitrarily high loss channels [68.58838842613457]
  A general attenuator $Phi_lambda, sigma$ is a bosonic quantum channel that acts by combining the input with a fixed environment state. We show that for any arbitrary value of $lambda>0$ there exists a suitable single-mode state $sigma(lambda)$. Our result holds even when we fix an energy constraint at the input of the channel, and implies that quantum communication at a constant rate is possible even in the limit of arbitrarily low transmissivity.
  arXiv  Detail & Related papers  (2020-03-19T16:50:11Z)

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.