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 Pacific Rim (CLEO-PR)

Arbitrary Mixing of Spectral Multimode Quantum States Generated by Dispersion-Engineered Nonlinear Crystal

Yuta Yamagishi, Akihito Omi, Aruto Hosaka, Kazuki Takahashi, Fumihiko Kannari

Published Jan 1, 2020• 0 citations
Publisher

Abstract

We generate spectral multimode squeezed states and demonstrate quantum mode mixing, a method to arbitrarily mix the spectral multimode quantum states of light using a type-II PPLN waveguide, which is applicable to quantum simulators.
DOI
10.1364/cleopr.2020.c11c_3

Related papers

Arbitrary Mixing of Frequency-Range Multimode Quantum States Using Nonlinear Waveguide Crystals Based on Dispersion Engineering

Yuta Yamagishi, Aruto Hosaka, Kazufumi Tanji +2 more

As a method of quantum pulse gating in a quantum simulator, we experimentally demonstrate arbitrary mixing of multimode quantum states prepared in the frequency domain.

Nonlinear Optics•Jan 1, 2021•0 citations

Multimode squeezed light generation and characterization

Alexander Chudakov, Vladislav Severin, Anastasia Poshevkina +5 more

Nowadays, the realization of quantum computations and communications based on continuous variables has attracted a significant attention due to a substantial expansion of the system dimensionality. The main progress in this area is attributed to the implementation of multimode systems based on squeezed states of light. One of the simplest ways to generate such states relies upon their producing in a single-pass optical parametric amplifier (OPA) using ultrafast pumping. However, for homodyne detection of such multimode states, the profile of the local oscillator (LO) must perfectly match the profile of the measured mode. Usually, this is not the case; therefore a proper treatment of multimode squeezing is required. In this work, we study both theoretically and experimentally the multimode squeezed light generated in type-0 and type-II OPA. We characterize such sources and investigate the degree of squeezing in dependence on the LO spectral profile, employing a pulse shaping technique. The theoretical analysis is performed using the Schmidt-mode theory. This work might have a significant impact on the realization of multimode quantum protocols

quant-pharXiv:2609.08591•Sep 9, 2026•0 citations

Tuneable Hybrid and Multimode Squeezed States of Light

Christian Drago

Gaussian quantum states of light have many applications in quantum technologies. Two of the most widely used Gaussian quantum states of light are the single- and two-mode squeezed states. In this thesis, we propose the generation of a hybrid of these two states, which has both properties of single- and two-mode squeezed states. We then extend our method to the generation of multimode squeezed states which posses N-partite entanglement. Our states are defined using Gaussian frequency modes, and our method relies on a nonlinear-optical process called spontaneous parametric downconversion. We shape the joint spectral amplitude of the generated light in two ways, by spectrally engineering the light incident on the crystal and by the engineering of the nonlinear crystal to have desired properties. We first use our method to generate tuneable hybrid squeezed states and then extend it to multimode squeezed states. We then investigate design considerations for the nonlinear crystal and study the effect of fabrication errors. The tuneable hybrid and multimode squeezed states are localized in both frequency and time, making them ideal for a variety of quantum information protocols. We expect that the states will be used to generalize many quantum information protocols to their multimode counterparts, such as, multi-parameter quantum metrology, multi-channel quantum imaging and multi-partite teleportation. Our work will therefore broaden the applicability of optics for the development of quantum technologies.

•Sep 3, 2020•0 citations

Multimode Entangled Squeezed Light Generation and Propagation in a Coupled-Cavity Photonic Crystal

Dylan van Eeden, Marc M. Dignam

We design a photonic crystal coupled-cavity system consisting of a three-mode cavity and three waveguides to generate and deliver entangled two-mode squeezed states of light on-chip.

Photonics North (PN)•May 28, 2024•0 citations

Spectrally Multimode Squeezed States of Light in the Telecom Band using Waveguides

Victor Roman Rodriguez, David Fainsin, Guilherme Luiz Zanin +3 more

We present and characterize a source of spectrally multimode squeezed state of light at telecom wavelengths. The state is made out of a periodically-poled waveguide (PPKTP) pumped by a femtosecond laser.

Quantum 2.0 Conference and Exhibition•Jan 1, 2023•2 citations

Temporal Mode Selective Measurement and Purification of Quantum Light

John M. Donohue, Vahid Ansari, Markus Allgaier +6 more

We employ dispersion-engineered sum-frequency generation to perform temporal-mode selective measurements on quantum light, provably manipulating the structure of multimode downconverted light and demonstrating spectral-phase sensitive seven-dimensional time-frequency quantum state tomography.

Conference on Lasers and Electro-Optics•Jan 1, 2018•0 citations
Nowadays, the realization of quantum computations and communications based on continuous variables has attracted a significant attention due to a substantial expansion of the system dimensionality. The main progress in this area is attributed to the implementation of multimode systems based on squeezed states of light. One of the simplest ways to generate such states relies upon their producing in a single-pass optical parametric amplifier (OPA) using ultrafast pumping. However, for homodyne detection of such multimode states, the profile of the local oscillator (LO) must perfectly match the profile of the measured mode. Usually, this is not the case; therefore a proper treatment of multimode squeezing is required. In this work, we study both theoretically and experimentally the multimode squeezed light generated in type-0 and type-II OPA. We characterize such sources and investigate the degree of squeezing in dependence on the LO spectral profile, employing a pulse shaping technique. The theoretical analysis is performed using the Schmidt-mode theory. This work might have a significant impact on the realization of multimode quantum protocols
Gaussian quantum states of light have many applications in quantum technologies. Two of the most widely used Gaussian quantum states of light are the single- and two-mode squeezed states. In this thesis, we propose the generation of a hybrid of these two states, which has both properties of single- and two-mode squeezed states. We then extend our method to the generation of multimode squeezed states which posses N-partite entanglement. Our states are defined using Gaussian frequency modes, and our method relies on a nonlinear-optical process called spontaneous parametric downconversion. We shape the joint spectral amplitude of the generated light in two ways, by spectrally engineering the light incident on the crystal and by the engineering of the nonlinear crystal to have desired properties. We first use our method to generate tuneable hybrid squeezed states and then extend it to multimode squeezed states. We then investigate design considerations for the nonlinear crystal and study the effect of fabrication errors. The tuneable hybrid and multimode squeezed states are localized in both frequency and time, making them ideal for a variety of quantum information protocols. We expect that the states will be used to generalize many quantum information protocols to their multimode counterparts, such as, multi-parameter quantum metrology, multi-channel quantum imaging and multi-partite teleportation. Our work will therefore broaden the applicability of optics for the development of quantum technologies.