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

Quantum Information and Measurement (QIM)

Generation of two-mode squeezed states from a single temporally multiplexed squeezing source

Mikkel V. Larsen, Xueshi Guo, Casper R. Breum, Jonas Schou Neergaard-Nielsen, Ulrik L. Andersen

Published Jan 1, 2019• 0 citations
Publisher

Abstract

In this work, EPR-states are generated from a single squeezing source by temporal multiplexing using optical switching and delay. With switching and delay being key components, we demonstrate a platform suitable for scalable quantum computation.
DOI
10.1364/qim.2019.t5a.20

Related papers

Fiber-coupled EPR-state generation using a single temporally multiplexed squeezed light source

Mikkel V. Larsen, Xueshi Guo, Casper R. Breum +2 more

Abstract A prerequisite for universal quantum computation and other large-scale quantum information processors is the careful preparation of quantum states in massive numbers or of massive dimension. For continuous variable approaches to quantum information processing (QIP), squeezed states are the natural quantum resources, but most demonstrations have been based on a limited number of squeezed states due to the experimental complexity in up-scaling. The number of physical resources can however be significantly reduced by employing the technique of temporal multiplexing. Here, we demonstrate an application to continuous variable QIP of temporal multiplexing in fiber: Using just a single source of squeezed states in combination with active optical switching and a 200 m fiber delay line, we generate fiber-coupled Einstein-Podolsky-Rosen entangled quantum states. Our demonstration is a critical enabler for the construction of an in-fiber, all-purpose quantum information processor based on a single or few squeezed state quantum resources.

•Jan 1, 2019•27 citations

Fiber-coupled EPR-state generation using a single temporally multiplexed squeezed light source

Mikkel V. Larsen, Xueshi Guo, Casper R. Breum +2 more

Abstract A prerequisite for universal quantum computation and other large-scale quantum information processors is the careful preparation of quantum states in massive numbers or of massive dimension. For continuous variable approaches to quantum information processing (QIP), squeezed states are the natural quantum resources, but most demonstrations have been based on a limited number of squeezed states due to the experimental complexity in up-scaling. The number of physical resources can however be significantly reduced by employing the technique of temporal multiplexing. Here, we demonstrate an application to continuous variable QIP of temporal multiplexing in fiber: Using just a single source of squeezed states in combination with active optical switching and a 200 m fiber delay line, we generate fiber-coupled Einstein-Podolsky-Rosen entangled quantum states. Our demonstration is a critical enabler for the construction of an in-fiber, all-purpose quantum information processor based on a single or few squeezed state quantum resources.

arXiv:1812.05358•npj Quantum Information•Jul 8, 2019•27 citations

Active Temporal Multiplexing of Photons

Gabriel J. Mendoza, Raffaele Santagati, Jack Munns +7 more

Photonic qubits constitute a leading platform to disruptive quantum technologies due to their unique low-noise properties. The cost of the photonic approach is the non-deterministic nature of many of the processes, including single-photon generation, which arises from parametric sources and negligible interaction between photons. Active temporal multiplexing - repeating a generation process in time and rerouting to single modes using an optical switching network - is a promising approach to overcome this challenge and will likely be essential for large-scale applications with greatly reduced resource complexity and system sizes. Requirements include the precise synchronization of a system of low-loss switches, delay lines, fast photon detectors, and feed-forward. Here we demonstrate temporal multiplexing of 8 'bins' from a double-passed heralded photon source and observe an increase in the heralding and heralded photon rates. This system points the way to harnessing temporal multiplexing in quantum technologies, from single-photon sources to large-scale computation.

arXiv:1503.01215•Mar 4, 2015•7 citations

Quantum switching and quantum secret sharing manipulated by squeezed state light

Junxiang Zhang, Changde Xie, Kunchi Peng

Summary form only given. Two pairs of EPR beams with identical frequency and constant phase relation are composed on two beamsplitters to produce two pairs of conditional entangled beams, two halves of which are sent to two sending stations (Alices) and others to two receiving stations (Bobs). The EPR entangled beams initially result from two-mode quadrature squeezed state light produced by, for example, two nondegenerate optical parametric oscillators (NOPO) pumped by a same laser. Converting the squeezed component of one of the EPR sources between amplitude and phase, the input quantum state at a sender will be reproduced at two receivers in turn. The quantum switching performance between two receivers is only manipulated by the squeezed component of a two-mode squeezed state light, which can be experimentally demonstrated by controlling the parametric process either in amplification or deamplification.

Quantum Electronics and Laser Science Conference•Nov 13, 2002•1 citation

Temporal Loop Multiplexing: A resource efficient scheme for multiplexed photon-pair sources

Robert J. A. Francis-Jones, Peter J. Mosley

Single photons are a vital resource for photonic quantum information processing. However, even state-of-the-art single photon sources based on photon-pair generation and heralding detection have only a low probability of delivering a single photon when one is requested. We analyse a scheme that uses a switched fibre delay loop to increase the delivery probability per time bin of single photons from heralded sources. We show that, for realistic experimental parameters, combining the output of up to 15 pulses can yield a performance improvement of a factor of 10. We consider the future performance of this scheme with likely component improvements.

arXiv:1503.06178•Mar 20, 2015•10 citations

Temporal multiplexing of heralded single photons with a resource-efficient fiber loop

Rowan A. Hoggarth, Robert J. A. Francis-Jones, Peter J. Mosley

We have implemented resource-efficient active multiplexing that synchronises single photons generated by several consecutive pump pulses with a single optical switch. We demonstrate an increase in delivery probability per mode of heralded single photons.

Conference on Lasers and Electro-Optics•Jan 1, 2017•0 citations
Abstract A prerequisite for universal quantum computation and other large-scale quantum information processors is the careful preparation of quantum states in massive numbers or of massive dimension. For continuous variable approaches to quantum information processing (QIP), squeezed states are the natural quantum resources, but most demonstrations have been based on a limited number of squeezed states due to the experimental complexity in up-scaling. The number of physical resources can however be significantly reduced by employing the technique of temporal multiplexing. Here, we demonstrate an application to continuous variable QIP of temporal multiplexing in fiber: Using just a single source of squeezed states in combination with active optical switching and a 200 m fiber delay line, we generate fiber-coupled Einstein-Podolsky-Rosen entangled quantum states. Our demonstration is a critical enabler for the construction of an in-fiber, all-purpose quantum information processor based on a single or few squeezed state quantum resources.
Abstract A prerequisite for universal quantum computation and other large-scale quantum information processors is the careful preparation of quantum states in massive numbers or of massive dimension. For continuous variable approaches to quantum information processing (QIP), squeezed states are the natural quantum resources, but most demonstrations have been based on a limited number of squeezed states due to the experimental complexity in up-scaling. The number of physical resources can however be significantly reduced by employing the technique of temporal multiplexing. Here, we demonstrate an application to continuous variable QIP of temporal multiplexing in fiber: Using just a single source of squeezed states in combination with active optical switching and a 200 m fiber delay line, we generate fiber-coupled Einstein-Podolsky-Rosen entangled quantum states. Our demonstration is a critical enabler for the construction of an in-fiber, all-purpose quantum information processor based on a single or few squeezed state quantum resources.
Photonic qubits constitute a leading platform to disruptive quantum technologies due to their unique low-noise properties. The cost of the photonic approach is the non-deterministic nature of many of the processes, including single-photon generation, which arises from parametric sources and negligible interaction between photons. Active temporal multiplexing - repeating a generation process in time and rerouting to single modes using an optical switching network - is a promising approach to overcome this challenge and will likely be essential for large-scale applications with greatly reduced resource complexity and system sizes. Requirements include the precise synchronization of a system of low-loss switches, delay lines, fast photon detectors, and feed-forward. Here we demonstrate temporal multiplexing of 8 'bins' from a double-passed heralded photon source and observe an increase in the heralding and heralded photon rates. This system points the way to harnessing temporal multiplexing in quantum technologies, from single-photon sources to large-scale computation.
Summary form only given. Two pairs of EPR beams with identical frequency and constant phase relation are composed on two beamsplitters to produce two pairs of conditional entangled beams, two halves of which are sent to two sending stations (Alices) and others to two receiving stations (Bobs). The EPR entangled beams initially result from two-mode quadrature squeezed state light produced by, for example, two nondegenerate optical parametric oscillators (NOPO) pumped by a same laser. Converting the squeezed component of one of the EPR sources between amplitude and phase, the input quantum state at a sender will be reproduced at two receivers in turn. The quantum switching performance between two receivers is only manipulated by the squeezed component of a two-mode squeezed state light, which can be experimentally demonstrated by controlling the parametric process either in amplification or deamplification.
Single photons are a vital resource for photonic quantum information processing. However, even state-of-the-art single photon sources based on photon-pair generation and heralding detection have only a low probability of delivering a single photon when one is requested. We analyse a scheme that uses a switched fibre delay loop to increase the delivery probability per time bin of single photons from heralded sources. We show that, for realistic experimental parameters, combining the output of up to 15 pulses can yield a performance improvement of a factor of 10. We consider the future performance of this scheme with likely component improvements.