Nonperturbative Zou-Wang-Mandel effect

• URL: http://arxiv.org/abs/2304.09149v2
• Date: Mon, 4 Mar 2024 03:14:44 GMT
• Title: Nonperturbative Zou-Wang-Mandel effect
• Authors: T. J. Volkoff and Diego A. R. Dalvit
• Abstract summary: The Zou-Wang-Mandel (ZWM) effect is a remarkable consequence of photon indistinguishability and continuous-variable entanglement. We show that the physical consequence of implementing optical path identity is a renormalization of quadrature squeezing.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The Zou-Wang-Mandel (ZWM) effect is a remarkable consequence of photon indistinguishability and continuous-variable entanglement in which an optical phase shift is imprinted on photonic modes associated with optical paths that that do not pass through the phase shift source. By bringing the canonical formalism of continuous-variable Gaussian states to bear on the mode-structure of the ZWM experiment, we show that the physical consequence of implementing optical path identity is a renormalization of quadrature squeezing which governs the entanglement of four effective optical modes. Nonperturbative expressions for the ZWM interference patterns and normalized first-order coherence function are derived. Generalizations to $\mathcal{H}$-graph states with more than four modes directly follow from the general method used to analyze the minimal example. We show that a ZWM interferometer with a laser-seeded signal mode, which estimates an idler phase shift by detecting photons that did not propagate through the phase shift, exhibits an optimal sensitivity comparable to that of a laser-seeded $SU(1,1)$ interferometer if path identity is implemented with high fidelity.

Related papers

• Relative phase and dynamical phase sensing in a Hamiltonian model of the optical SU(1,1) interferometer [0.0]
  We show that the optimal operating point for sensing the relative phase is found to be $phi = pi$.<n>Results indicate a first-principles approach for describing general optical quantum sensors containing multiple optical downconversion processes.
  arXiv  Detail & Related papers  (2025-05-21T15:18:18Z)
• Emerging Non-Hermitian Topology in a Chiral Driven-Dissipative Bose-Hubbard Model [0.0]
  We introduce a driven-dissipative Bose-Hubbard chain describing coupled lossy photonic modes. We numerically prove that the steady-state solution is stabilized by an inhomogeneous profile of the driving amplitude. Our work shows the emergence of non-Hermitian topological phases in an interacting model that can be naturally implemented with superconducting circuits.
  arXiv  Detail & Related papers  (2024-11-13T19:00:34Z)
• Mode hitching in traveling-wave optical parametric amplification [0.0]
  This study focuses on the classical transverse dynamics of the signal and idler beams when they propagate in a generic thick OPA at a nominally small angle. We show that the beams tend to copropagate while maintaining a fixed separation, a phenomenon that we term hitching. Results have implications for the generation of multi-spatial-mode squeezed light for quantum imaging applications.
  arXiv  Detail & Related papers  (2024-09-15T18:24:04Z)
• Nonlinear dynamical Casimir effect and Unruh entanglement in waveguide QED with parametrically modulated coupling [83.88591755871734]
  We study theoretically an array of two-level qubits moving relative to a one-dimensional waveguide. When the frequency of this motion approaches twice the qubit resonance frequency, it induces parametric generation of photons and excitation of the qubits. We develop a comprehensive general theoretical framework that incorporates both perturbative diagrammatic techniques and a rigorous master-equation approach.
  arXiv  Detail & Related papers  (2024-08-30T15:54:33Z)
• Homodyne detection is optimal for quantum interferometry with path-entangled coherent states [0.0]
  homodyning schemes analyzed here achieve optimality (saturate the quantum Cram'er-Rao bound) In the presence of photon loss, the schemes become suboptimal, but we find that their performance is independent of the phase to be measured.
  arXiv  Detail & Related papers  (2024-05-22T00:25:02Z)
• Atomic diffraction from single-photon transitions in gravity and Standard-Model extensions [49.26431084736478]
  We study single-photon transitions, both magnetically-induced and direct ones, in gravity and Standard-Model extensions. We take into account relativistic effects like the coupling of internal to center-of-mass degrees of freedom, induced by the mass defect.
  arXiv  Detail & Related papers  (2023-09-05T08:51:42Z)
• Phase sensitivity of spatially broadband high-gain SU(1,1) interferometers [0.0]
  We present a theoretical description of spatially multimode SU (1,1) interferometers operating at low and high parametric gains. Our approach is based on a step-by-step solution of a system of integro-differential equations for each nonlinear interaction region. We investigate plane-wave and Gaussian pumping and show that for any parametric gain, there exists a region of phases for which the phase sensitivity surpasses the standard shot-noise scaling.
  arXiv  Detail & Related papers  (2023-07-04T13:51:31Z)
• Experimental realization of deterministic and selective photon addition in a bosonic mode assisted by an ancillary qubit [50.591267188664666]
  Bosonic quantum error correcting codes are primarily designed to protect against single-photon loss. Error correction requires a recovery operation that maps the error states -- which have opposite parity -- back onto the code states. Here, we realize a collection of photon-number-selective, simultaneous photon addition operations on a bosonic mode.
  arXiv  Detail & Related papers  (2022-12-22T23:32:21Z)
• Tunable directional photon scattering from a pair of superconducting qubits [105.54048699217668]
  In the optical and microwave frequency ranges tunable directionality can be achieved by applying external magnetic fields. We demonstrate tunable directional scattering with just two transmon qubits coupled to a transmission line.
  arXiv  Detail & Related papers  (2022-05-06T15:21:44Z)
• Remote Phase Sensing by Coherent Single Photon Addition [58.720142291102135]
  We propose a remote phase sensing scheme inspired by the high sensitivity of the entanglement produced by coherent multimode photon addition on the phase set in the remote heralding apparatus. We derive the optimal observable to perform remote phase estimation from heralded quadrature measurements.
  arXiv  Detail & Related papers  (2021-08-26T14:52:29Z)
• Quantum asymmetry and noisy multi-mode interferometry [55.41644538483948]
  Quantum asymmetry is a physical resource which coincides with the amount of coherence between the eigenspaces of a generator. We show that the asymmetry may emphincrease as a result of a emphdecrease of coherence inside a degenerate subspace.
  arXiv  Detail & Related papers  (2021-07-23T07:30:57Z)
• Qubit-photon bound states in topological waveguides with long-range hoppings [62.997667081978825]
  Quantum emitters interacting with photonic band-gap materials lead to the appearance of qubit-photon bound states. We study the features of the qubit-photon bound states when the emitters couple to the bulk modes in the different phases. We consider the coupling of emitters to the edge modes appearing in the different topological phases.
  arXiv  Detail & Related papers  (2021-05-26T10:57:21Z)
• Higher-dimensional Hong-Ou-Mandel effect and state redistribution with linear-optical multiports [68.8204255655161]
  We expand the two-photon Hong-Ou-Mandel (HOM) effect onto a higher-dimensional set of spatial modes. We introduce an effect that allows controllable redistribution of quantum states over these modes using directionally unbiased linear-optical four-ports.
  arXiv  Detail & Related papers  (2020-12-16T04:50:39Z)
• Nonlinear phase estimation enhanced by an actively correlated Mach-Zehnder interferometer [0.4893345190925178]
  A nonlinear phase shift is introduced to a Mach-Zehnder interferometer (MZI) We present a scheme for enhancing the phase sensitivity. Based on the optimal splitting ratio of beam splitters, the phase sensitivity can beat the standard quantum limit.
  arXiv  Detail & Related papers  (2020-09-17T04:36:00Z)

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.