A generating-function approach to the interference of squeezed states with partial distinguishability
- URL: http://arxiv.org/abs/2602.00071v1
- Date: Tue, 20 Jan 2026 17:50:15 GMT
- Title: A generating-function approach to the interference of squeezed states with partial distinguishability
- Authors: Matheus Eiji Ohno Bezerra, Valery Shchesnovich,
- Abstract summary: We build on the phase-space formalism to characterize the effects of partial distinguishability on the interference of single-mode squeezed states.<n>Our approach goes beyond commonly used models that represent distinguishability via additional noninterfering modes.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Photon distinguishability is a fundamental property manifested in multiphoton interference and one of the main sources of noise in any photonic quantum information processing. In this work, rather than relying on first-quantization methods, we build on a generating-function framework based on the phase-space formalism to characterize the effects of partial distinguishability on the interference of single-mode squeezed states. Our approach goes beyond commonly used models that represent distinguishability via additional noninterfering modes and captures genuine multiphoton interference effects induced by the overlap of the internal state of the photons. This description provides a clear physical account of how distinguishability gives rise to effective noise in Gaussian boson sampling protocols while enabling a systematic investigation of phase effects arising from the overlap of the internal states.
Related papers
- Nonclassical Driven-Dissipative Dynamics in Collective Quantum Optics [51.56484100374058]
We study ensembles of interacting quantum emitters coherently driven by a laser field and coupled to photonic structures.<n>We find that off-resonant virtual states may gain population through dissipation, redefining their role in open systems.<n>Our models address challenges like inhomogeneous broadening and decoherence, demonstrating the feasibility of harnessing cooperative light-matter effects for quantum technologies.
arXiv Detail & Related papers (2025-09-12T20:01:55Z) - From Wavefunctional Entanglement to Entangled Wavefunctional Degrees of Freedom [0.0]
The question of whether entanglement between photons is equivalent to entanglement between their characteristic field modes is a key, open problem.<n>I offer a fresh, deeper, physical insight into this subtle, albeit enduring, issue by describing a situation in which entangling interactions between optical modes can be distilled into genuine entanglement.<n>This understanding might be applied to formulate a new class of protocols for distilling quantum magic from contextually and nonlocally entangled photons within inseparable field modes.
arXiv Detail & Related papers (2025-07-07T04:09:20Z) - Incoherent behavior of partially distinguishable photons [0.0]
Photon distinguishability is a key factor limiting quantum interference in photonic devices.<n>We present a basis-independent framework for analyzing multi-photon interference.
arXiv Detail & Related papers (2025-02-07T16:10:35Z) - Partial-immunity of two-photon correlation against wavefront distortion for spatially entangled photons [0.0]
High-dimensional quantum entanglement in photons offers notable technological advancements over traditional qubit-based systems.<n>However, such high-dimensional states are vulnerable to disruption by complex disordered media, presenting significant challenges in practical applications.<n>We present a systematic study of the randomization of two-photon correlations caused by arbitrary phase distortions in the far field.
arXiv Detail & Related papers (2024-12-12T13:31:20Z) - Demonstration of Lossy Linear Transformations and Two-Photon Interference on a Photonic Chip [78.1768579844556]
We show that engineered loss, using an auxiliary waveguide, allows one to invert the spatial statistics from bunching to antibunching.
We study the photon statistics within the loss-emulating channel and observe photon coincidences, which may provide insights into the design of quantum photonic integrated chips.
arXiv Detail & Related papers (2024-04-09T06:45:46Z) - Entanglement-induced collective many-body interference [62.22849132943891]
We propose an interferometric setting through which N-particle interference can be observed, while any interference of lower orders is strictly suppressed.
We experimentally demonstrate this effect in a four-photon interferometer, where the interference is nonlocal, in principle.
A joint detection of all four photons identifies a high-visibility interference pattern varying as a function of their collective four-particle phase, a genuine four-body property.
arXiv Detail & Related papers (2023-10-12T18:00:02Z) - Error filtration for quantum sensing via interferometry [0.0]
Dephasing is a main noise mechanism that afflicts quantum information.
We discuss a hardware scheme of error filtration to mitigate the effects of dephasing.
We apply this scheme to preserve coherent states and to phase-stabilize stellar interferometry.
arXiv Detail & Related papers (2023-10-02T10:54:10Z) - 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) - Distinguishability and "which pathway" information in multidimensional
interferometric spectroscopy with a single entangled photon-pair [0.0]
Photon exchange-phase and degree of distinguishability have not been widely utilized in quantum-enhanced applications.
We show that even at low degree entanglement, when a two-photon wave-function is coupled to matter, it is encoded with a reliable "which pathway?" information.
We find that quantum-light interferometry facilitates utterly different set of time-delay variables, which are unbound by uncertainty to the inverse bandwidth of the wave-packet.
arXiv Detail & Related papers (2021-07-12T07:19:58Z) - Observation-dependent suppression and enhancement of two-photon
coincidences by tailored losses [68.8204255655161]
Hong-Ou-Mandel (HOM) effect can lead to a perfect suppression of two-particle coincidences between the output ports of a balanced beam splitter.
In this work, we demonstrate experimentally that the two-particle coincidence statistics of two bosons can instead be seamlessly tuned to substantial enhancement.
Our findings reveal a new approach to harnessing non-Hermitian settings for the manipulation of multi-particle quantum states.
arXiv Detail & Related papers (2021-05-12T06:47:35Z) - Symmetry allows for distinguishability in totally destructive
many-particle interference [52.77024349608834]
We investigate, in a four photon interference experiment in a laser-written waveguide structure, how symmetries control the suppression of many-body output events of a $J_x$ unitary.
We show that totally destructive interference does not require mutual indistinguishability between all, but only between symmetrically paired particles.
arXiv Detail & Related papers (2021-02-19T16:37:19Z) - Tuning photon statistics with coherent fields [0.0]
Photon correlations, as measured by Glauber's $n$-th order coherence functions, are highly sought to be minimized and/or maximized.
In systems that are coherently driven, so-called blockades can give rise to strong correlations according to two scenarios.
We show how these two approaches relate to the admixing of a coherent state with a quantum state.
arXiv Detail & Related papers (2020-04-24T17:50:40Z)
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.