Photon-Conditioned Squeezed States for Directional Displacement Response in Continuous-Variable Photonics

• URL: http://arxiv.org/abs/2605.27660v1
• Date: Tue, 26 May 2026 20:23:50 GMT
• Title: Photon-Conditioned Squeezed States for Directional Displacement Response in Continuous-Variable Photonics
• Abstract summary: Squeezed Fock states, photon-subtracted squeezed states, and optical cat states are established non-Gaussian resources in continuous-variable quantum optics.<n>We compare these known state families from a task-oriented perspective.<n>Results identify a regime relevant to homodyne-aligned continuous-variable control and anisotropic displacement-noise mitigation.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Squeezed Fock states, photon-subtracted squeezed states, and optical cat states are established non-Gaussian resources in continuous-variable quantum optics. Here we compare these known state families from a task-oriented perspective: matched mean photon number, scalar Wigner negativity, and directional displacement-fidelity response. Starting from squeezed vacuum, single-photon subtraction prepares a state proportional to \(S(r,θ)\ket{1}\), while two-photon subtraction prepares an even-parity squeezed Fock superposition rather than a pure \(S(r,θ)\ket{2}\). We benchmark photon-conditioned squeezed states against Fock and coherent-cat references using the integrated Wigner negativity \(δ\), the energy-normalized metric \(δ/\langle n\rangle\), and fidelity-threshold displacement radii \(R_F(φ)\). Cat benchmarks remain strong scalar Wigner-negativity resources, whereas photon-conditioned squeezed states provide an origin-centered alternative with tunable anisotropic displacement response. In particular, the two-photon-subtracted squeezed state shows favorable displacement-fidelity radii over selected quadrature directions at matched \(\langle n\rangle\). These results identify a regime relevant to homodyne-aligned continuous-variable control and anisotropic displacement-noise mitigation, with directional sensing as a natural dual application.

Related papers

• Quantum Arago-Fresnel interference of displaced spin states of photons [5.223315390099459]
  We re-investigate the macroscopic Arago-Fresnel interference producible by photon helicities.<n>We compute the Stokes parameter of a polarized beam combined from a regular coherent state (displaced from the vacuum) and a displaced single-photon spin state.<n>This quantum interferometry establishes a purely optical method to determine the spin of an unknown incident photon.
  arXiv  Detail & Related papers  (2026-07-30T14:01:46Z)
• Quantum theory of a three-photon Kerr parametric oscillator [75.2200279238806]
  We investigate the quantum properties of a nonlinear Kerr oscillator driven by a three-photon pump.<n>We show that the squeezing can be enhanced, suppressed, or even reversed, leading to a squeezing-to-anti-squeezing transition.
  arXiv  Detail & Related papers  (2026-05-20T11:14:54Z)
• Resource theory of coherence in continuous position basis from measurement-induced dephasing [0.0]
  We develop a resource-theoretic framework for quantum coherence directly in continuous basis.<n>We introduce a physically motivated dephasing channel based on random momentum kicks.<n>We show that continuous-basis coherence is tied to dephasing disturbance rather than to a nonempty set of diagonal states.
  arXiv  Detail & Related papers  (2026-05-09T15:53:59Z)
• Dynamic stimulated emission for deterministic addition and subtraction of propagating photons [0.6157382820537719]
  We introduce the concept of textitdynamic stimulated emission, whereby a quantum emitter undergoes stimulated emission with a time-dependent coupling.<n>We show that for both two- and three-level emitters, this process can be used to deterministically add or subtract a photon to a single propagating optical mode.<n>Our protocols provide a path towards integrating quantum emitters to construct efficient sources of single-mode non-Gaussian light beyond single photons.
  arXiv  Detail & Related papers  (2025-12-10T14:57:58Z)
• Nonclassicality of fully degenerate triple-photon states and its application in generating non-Gaussian entanglement [3.952979883190571]
  The nonGaussianity and nonclassicality of squeezed states increase with the increase of interaction strength.<n>We study the correlation properties of two-mode state generated by interfering 0-phase and $pi$-phase squeezed states on a beam splitter.<n>Our results highlight the nonclassical nature of fully degenerate triple-photon states and establish a pathway for preparing non-Gaussian entanglement based on such states.
  arXiv  Detail & Related papers  (2025-06-16T12:10:33Z)
• Optimal sensing of photon addition and subtraction on nonclassical light [3.0441346699495155]
  We show that the Wasserstein distance $W_1$ faithfully captures changes that arise due to photon addition to, or subtraction from, nonclassical states.<n>We explicate this in the case of the squeezed vacuum and even coherent states and show that photon addition (or subtraction) is mirrored in the shift in the intensity of specific regions in the tomogram.
  arXiv  Detail & Related papers  (2024-09-19T16:26:41Z)
• The formation of Schrodinger cat-like states in the process of spontaneous parametric down-conversion [50.161078038675285]
  We show the formation of Schrodinger catlike states (Ss) during the spontaneous parametric downconversion (SPDC) process. For the first time, we show the formation of Ss in the fundamental and second harmonic modes under nondissipative and dissipative regimes.
  arXiv  Detail & Related papers  (2024-05-23T13:11:07Z)
• Strong coupling between a single-photon and a two-photon Fock state [44.00303450801203]
  We report an experimental observation of the strong coupling between a single-photon and a two-photon Fock state in an ultrastrongly-coupled circuit-QED system.<n>Results represent a key step towards a new regime of quantum nonlinear optics.
  arXiv  Detail & Related papers  (2024-01-05T10:23:14Z)
• Unconditional Wigner-negative mechanical entanglement with linear-and-quadratic optomechanical interactions [62.997667081978825]
  We propose two schemes for generating Wigner-negative entangled states unconditionally in mechanical resonators. We show analytically that both schemes stabilize a Wigner-negative entangled state that combines the entanglement of a two-mode squeezed vacuum with a cubic nonlinearity. We then perform extensive numerical simulations to test the robustness of Wigner-negative entanglement attained by approximate CPE states stabilized in the presence of thermal decoherence.
  arXiv  Detail & Related papers  (2023-02-07T19:00:08Z)
• Connecting steady-states of driven-dissipative photonic lattices with spontaneous collective emission phenomena [91.3755431537592]
  We use intuition to predict the formation of non-trivial photonic steady-states in one and two dimensions. We show that subradiant emitter configurations are linked to the emergence of steady-state light-localization in the driven-dissipative setting. These results shed light on the recently reported optically-defined cavities in polaritonic lattices.
  arXiv  Detail & Related papers  (2021-12-27T23:58:42Z)
• Quantum illumination with noisy probes: Conditional advantages of non-Gaussianity [0.9999629695552195]
  Entangled states, like the two-mode squeezed vacuum state, are known to give quantum advantage in the illumination protocol. We use non-Gaussian photon-added and -subtracted states, affected by local Gaussian noise on top of the omnipresent thermal noise, as probes in the illumination protocol.
  arXiv  Detail & Related papers  (2021-07-06T17:37:45Z)
• Two-photon resonance fluorescence of two interacting non-identical quantum emitters [77.34726150561087]
  We study a system of two interacting, non-indentical quantum emitters driven by a coherent field. We show that the features imprinted by the two-photon dynamics into the spectrum of resonance fluorescence are particularly sensitive to changes in the distance between emitters. This can be exploited for applications such as superresolution imaging of point-like sources.
  arXiv  Detail & Related papers  (2021-06-04T16:13:01Z)
• Superposition of two-mode squeezed states for quantum information processing and quantum sensing [55.41644538483948]
  We investigate superpositions of two-mode squeezed states (TMSSs) TMSSs have potential applications to quantum information processing and quantum sensing.
  arXiv  Detail & Related papers  (2021-02-01T18:09:01Z)
• Light-matter interactions near photonic Weyl points [68.8204255655161]
  Weyl photons appear when two three-dimensional photonic bands with linear dispersion are degenerated at a single momentum point, labeled as Weyl point. We analyze the dynamics of a single quantum emitter coupled to a Weyl photonic bath as a function of its detuning with respect to the Weyl point.
  arXiv  Detail & Related papers  (2020-12-23T18:51:13Z)

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.