Photonic Quantum State Tomography Using Free Electrons

Alexey Gorlach; Salomon Malka; Aviv Karnieli; Raphael Dahan; Eliahu Cohen; Avi Pe'er; Ido Kaminer

doi:https://doi.org/10.1103/PhysRevLett.133.250801

Photonic Quantum State Tomography Using Free Electrons

Alexey Gorlach, Salomon Malka, Aviv Karnieli, Raphael Dahan, Eliahu Cohen, Avi Pe'er, Ido Kaminer

Bar-Ilan University, Technion - Israel Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

The tomography of photonic quantum states is key in quantum optics, impacting quantum sensing, computing, and communication. Conventional detectors are limited in their temporal and spatial resolution, hampering high-rate quantum communication and local addressing of photonic circuits. Here, we propose to utilize free electron-photon interactions for quantum state tomography, introducing electron homodyne detection with potential for femtosecond-temporal and nanometer-spatial resolutions. The detectable quantum information level depends on the electron-photon interaction strength. Our Letter opens avenues for free-electron-based photodetection utilizing the ultrafast, subwavelength, nondestructive nature of free electrons.

Original language	English
Article number	250801
Journal	Physical Review Letters
Volume	133
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.133.250801
State	Published - 20 Dec 2024

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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https://doi.org/10.1103/PhysRevLett.133.250801

Cite this

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title = "Photonic Quantum State Tomography Using Free Electrons",

abstract = "The tomography of photonic quantum states is key in quantum optics, impacting quantum sensing, computing, and communication. Conventional detectors are limited in their temporal and spatial resolution, hampering high-rate quantum communication and local addressing of photonic circuits. Here, we propose to utilize free electron-photon interactions for quantum state tomography, introducing electron homodyne detection with potential for femtosecond-temporal and nanometer-spatial resolutions. The detectable quantum information level depends on the electron-photon interaction strength. Our Letter opens avenues for free-electron-based photodetection utilizing the ultrafast, subwavelength, nondestructive nature of free electrons.",

author = "Alexey Gorlach and Salomon Malka and Aviv Karnieli and Raphael Dahan and Eliahu Cohen and Avi Pe'er and Ido Kaminer",

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AU - Gorlach, Alexey

AU - Malka, Salomon

AU - Karnieli, Aviv

AU - Dahan, Raphael

AU - Cohen, Eliahu

AU - Pe'er, Avi

AU - Kaminer, Ido

PY - 2024/12/20

Y1 - 2024/12/20

N2 - The tomography of photonic quantum states is key in quantum optics, impacting quantum sensing, computing, and communication. Conventional detectors are limited in their temporal and spatial resolution, hampering high-rate quantum communication and local addressing of photonic circuits. Here, we propose to utilize free electron-photon interactions for quantum state tomography, introducing electron homodyne detection with potential for femtosecond-temporal and nanometer-spatial resolutions. The detectable quantum information level depends on the electron-photon interaction strength. Our Letter opens avenues for free-electron-based photodetection utilizing the ultrafast, subwavelength, nondestructive nature of free electrons.

AB - The tomography of photonic quantum states is key in quantum optics, impacting quantum sensing, computing, and communication. Conventional detectors are limited in their temporal and spatial resolution, hampering high-rate quantum communication and local addressing of photonic circuits. Here, we propose to utilize free electron-photon interactions for quantum state tomography, introducing electron homodyne detection with potential for femtosecond-temporal and nanometer-spatial resolutions. The detectable quantum information level depends on the electron-photon interaction strength. Our Letter opens avenues for free-electron-based photodetection utilizing the ultrafast, subwavelength, nondestructive nature of free electrons.

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VL - 133

JO - Physical Review Letters

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IS - 25

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Photonic Quantum State Tomography Using Free Electrons

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All Science Journal Classification (ASJC) codes

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