Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics

Energy-entangled W-state in optical fiber

Bin Fang, M. Menotti, Marco Liscidini, John E. Sipe, Virginia O. Lorenz

Published Jan 1, 2018• 0 citations
Publisher

Abstract

We demonstrate progress towards the generation of an energy-entangled three-photon W-state via spontaneous four-wave mixing in a polarization-maintaining fiber and characterize it by reduced density matrix tomography, without involving frequency conversion.
DOI
10.1364/cleo_qels.2018.fm3g.7

Related papers

Three-Photon Discrete-Energy-Entangled W State in an Optical Fiber

Bin Fang, M. Menotti, Marco Liscidini +2 more

We experimentally demonstrate the generation of a three-photon discrete-energy-entangled W state using multiphoton-pair generation by spontaneous four-wave mixing in an optical fiber. We show that, by making use of prior information on the photon source, we can verify the state produced by this source without resorting to frequency conversion.

arXiv:1909.13000•Physical Review Letters•Aug 16, 2019•39 citations

Generating transverse-mode entanglement in optical fiber

Dong Beom Kim, Alfred B. U’Ren, Karina Garay-Palmett +1 more

We report our recent progress in the generation and verification of a transverse-mode Bell state using spontaneous four-wave mixing in a few-mode polarization-maintaining fiber. Utilizing spatial light modulators, we show control over individual four-wave mixing processes through precise beam shaping of the pump transverse mode and verify entanglement via quantum state tomography. We discuss challenges in temporal and frequency distinguishability and illustrate how they can be resolved. This work represents a first step towards creating a versatile fiber-based transverse mode-entangled photon-pair source matched to fiber infrastructure.

Quantum Computing, Communication, and Simulation•Mar 8, 2023•1 citation

Three-photon discrete-energy-entangled W state in optical fiber

Virginia O. Lorenz

The tripartite W state exhibits maximal entanglement between three parties, represented as 1/sqrt(3)(|001>+|010>+|100>), and has interesting applications for quantum communication, fundamental tests of quantum mechanics, and in quantum sensing and quantum computing. We experimentally demonstrate the generation of a three-photon discrete-energy-entangled W state in optical fiber. The source relies on multiphoton-pair generation via spontaneous four-wave mixing, and post-selection. By taking advantage of constraints imposed by the SFWM process, post-selection, and the properties of the W state, we verify the state produced by this source without resorting to frequency conversion.

Quantum Computing, Communication, and Simulation•Mar 4, 2021•4 citations

Towards Transverse-Mode Entanglement Generation In Few-Mode Optical Fiber

Dong Beom Kim, Alfred B. U’Ren, Karina Garay-Palmett +1 more

We present progress towards generating transverse-mode-entangled photon-pair states in few-mode birefringent optical fiber using spontaneous four-wave mixing. We also describe how transverse-mode quantum state tomography is employed to verify such entanglement.

Quantum 2.0 Conference and Exhibition•Jan 1, 2023•1 citation

Quantum Information Processing in Optical Fibers

Prem Kumar, Joseph B. Altepeter, Milja Medić +2 more

We will review recent progress in generating high fidelity quantum correlated and entangled photons via spontaneous four-wave mixing in standard optical fiber. We will also present applications of such photons in quantum information processing tasks.

Frontiers in Optics•Jan 1, 2008•0 citations

Generation of energy-entangled W states

M. Menotti, Lorenzo Maccone, John E. Sipe +1 more

Tripartite entangled states, such as Greenberger-Horne-Zeilinger (GHZ) and W states, are appealing for tests of fundamental aspects of quantum mechanics, as well as for implementations of quantum communication protocols. While the information is typically encoded in the polarization or path of the photons, we propose a feasible scheme to generate W states that are entangled in the energy degree of freedom. This is achieved by propagating photon pairs generated by parametric fluorescence in a linear optical circuit and post-selecting on the output channels. Such source can be easily integrated, profiting from high stability and a compact footprint. We also present a simple protocol to characterize the generated tripartite state, which is based on the reduced density matrix approach. Unexpectedly, although we rely on the energy degree of freedom, the full state tomography does not require any frequency conversion.

International Conference on Transparent Optical Networks•Jul 1, 2017•0 citations
We report our recent progress in the generation and verification of a transverse-mode Bell state using spontaneous four-wave mixing in a few-mode polarization-maintaining fiber. Utilizing spatial light modulators, we show control over individual four-wave mixing processes through precise beam shaping of the pump transverse mode and verify entanglement via quantum state tomography. We discuss challenges in temporal and frequency distinguishability and illustrate how they can be resolved. This work represents a first step towards creating a versatile fiber-based transverse mode-entangled photon-pair source matched to fiber infrastructure.
The tripartite W state exhibits maximal entanglement between three parties, represented as 1/sqrt(3)(|001>+|010>+|100>), and has interesting applications for quantum communication, fundamental tests of quantum mechanics, and in quantum sensing and quantum computing. We experimentally demonstrate the generation of a three-photon discrete-energy-entangled W state in optical fiber. The source relies on multiphoton-pair generation via spontaneous four-wave mixing, and post-selection. By taking advantage of constraints imposed by the SFWM process, post-selection, and the properties of the W state, we verify the state produced by this source without resorting to frequency conversion.
Tripartite entangled states, such as Greenberger-Horne-Zeilinger (GHZ) and W states, are appealing for tests of fundamental aspects of quantum mechanics, as well as for implementations of quantum communication protocols. While the information is typically encoded in the polarization or path of the photons, we propose a feasible scheme to generate W states that are entangled in the energy degree of freedom. This is achieved by propagating photon pairs generated by parametric fluorescence in a linear optical circuit and post-selecting on the output channels. Such source can be easily integrated, profiting from high stability and a compact footprint. We also present a simple protocol to characterize the generated tripartite state, which is based on the reduced density matrix approach. Unexpectedly, although we rely on the energy degree of freedom, the full state tomography does not require any frequency conversion.