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Multimode Fock states with large photon number: effective descriptions and applications in quantum metrology

Martí Perarnau-Llobet, A González-Tudela, J I Cirac

Abstract We develop general tools to characterise and efficiently compute relevant observables of multimode N -photon states generated in nonlinear decays in one-dimensional waveguides. We then consider optical interferometry in a Mach–Zender interferometer where a d -mode photonic state enters in each arm of the interferometer. We derive a simple expression for the quantum Fisher information in terms of the average photon number in each mode, and show that it can be saturated by number-resolved photon measurements that do not distinguish between the different d modes.Abstract We develop general tools to characterise and efficiently compute relevant observables of multimode N -photon states generated in nonlinear decays in one-dimensional waveguides. We then consider optical interferometry in a Mach–Zender interferometer where a d -mode photonic state enters in each arm of the interferometer. We derive a simple expression for the quantum Fisher information in terms of the average photon number in each mode, and show that it can be saturated by number-resolved photon measurements that do not distinguish between the different d modes.

arXiv:1910.03323Quantum Science and TechnologyJan 16, 202030 citations

Quantum states of light for quantum metrology, computing and communication (Conference Presentation)

Lucia Caspani

SPIE Conference on Nonlinear Optics and its ApplicationsApr 1, 20200 citations

Exploring the limits of many-body quantum metrology via adiabatic dynamics

Erik Luszczak André

Màster Oficial de Ciència i Tecnologia Quàntiques / Quantum Science and Technology, Facultat de Física, Universitat de Barcelona. Curs: 2024-2025. Tutors: Martí Perarnau-Llobet, John Calsamiglia Costa

Jul 1, 20250 citations

Multi-photon quantum interferences in multimode optics circuits

Philippe Neuville

info:eu-repo/semantics/nonPublished

Jan 1, 20190 citations

Quantum Optics with Many-Body States

M. Kira

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text M. (M. ) Kira, "Quantum Optics with Many-Body States," in The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meeting, OSA Technical Digest (online) (Optica Publishing Group, 2013), paper M4B.2. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save articleGet PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text M. (M. ) Kira, "Quantum Optics with Many-Body States," in The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meeting, OSA Technical Digest (online) (Optica Publishing Group, 2013), paper M4B.2. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article

The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meetingJan 1, 20130 citations

Quantum dynamics of propagating photons with strong interactions: a generalized input-output formalism

Caneva, T., Manzoni, M., Shi, T. +3 more

Author: Caneva, Tommaso et al.; Genre: Journal Article; Published online: 2015-10-26; Open Access; Title: Quantum dynamics of propagating photons with strong interactions: a generalized input-output formalism

Oct 26, 201591 citations

Multimode Fock states with large photon number: effective descriptions and applications in quantum metrology

Abstract

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Multimode Fock states with large photon number: effective descriptions and applications in quantum metrology

Abstract

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