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

arXiv:1403.6631

Engineering large-scale entanglement in the quantum optical frequency comb: influence of the quasiphasematching bandwidth and of dispersion

Pei Wang, Wenjiang Fan, Olivier Pfister

Published Mar 26, 2014• 6 citations
arXivHTMLPDF

Abstract

One of the most scalable methods for continuous-variable quantum computing is to encode quantum information in the quantum optical frequency comb generated by an optical parametric oscillator (OPO). The scalability is limited by the quasiphasematching bandwidth and dispersion of the OPO. We study both factors in this article. The results show that 3200 qumodes are probably entangled in our recent demonstration of a record 60-qumode entanglement.

DOI
10.48550/arxiv.1403.6631

Related papers

Large-scale frequency- and time-domain quantum entanglement over the optical frequency comb (Conference Presentation)

Olivier Pfister

When it comes to practical quantum computing, the two main challenges are circumventing decoherence (devastating quantum errors due to interactions with the environmental bath) and achieving scalability (as many qubits as needed for a real-life, game-changing computation). We show that using, in lieu of qubits, the "qumodes" represented by the resonant fields of the quantum optical frequency comb of an optical parametric oscillator allows one to create bona fide, large scale quantum computing processors, pre-entangled in a cluster state. We detail our recent demonstration of 60-qumode entanglement (out of an estimated 3000) and present an extension to combining this frequency-tagged with time-tagged entanglement, in order to generate an arbitrarily large, universal quantum computing processor.

•Jun 7, 2017•0 citations

One-Way Quantum Computing in the Optical Frequency Comb

Nicolas C. Menicucci, Steven T. Flammia, Olivier Pfister

One-way quantum computing allows any quantum algorithm to be implemented easily using just measurements. The difficult part is creating the universal resource, a cluster state, on which the measurements are made. We propose a scalable method that uses a single, multimode optical parametric oscillator (OPO). The method is very efficient and generates a continuous-variable cluster state, universal for quantum computation, with quantum information encoded in the quadratures of the optical frequency comb of the OPO.

arXiv:0804.4468•Physical Review Letters•Sep 22, 2008•313 citations

Broadband quasiphasematching for large-scale entanglement in quantum optical frequency combs

Wenjiang Fan, Pei J. Wang, Olivier Pfister

We observed a remarkably broad sum frequency generation quasi-phasematching bandwidth in periodically poled KTiOPO4, consistent with theory. This is key to large-size quantum computing registers by generating continuous-variable cluster states in quantum optical frequency combs.

•Jan 1, 2014•1 citation

Large-scale multipartite entanglement in the quantum optical frequency comb of a depleted-pump optical parametric oscillator

ShahrokhshahiReihaneh, PfisterOlivier

We show theoretically that multipartite entanglement is generated on a massive scale in the spectrum, or optical frequency comb, of a single optical parametric oscillator (OPO) emitting well above ...

Quantum Information and Computation•Nov 1, 2012•0 citations

Engineering large-scale entanglement in the quantum optical frequency comb

Pei Wang, Wenjiang Fan, Moran Chen +1 more

We report on experimental progress toward scaling our recent 60-entangled-qumode experiment [1] to thousands of qumodes in the quantum optical frequency comb. We present a model which predicts that 3,200 entangled modes can be achieved.

•Jan 1, 2015•2 citations

Scaling quantum entanglement in the optical frequency comb

Matthew Pysher, Yoshichika Miwa, Reihaneh Shahrokhshahi +2 more

Scalability and coherence are two essential requirements for the experimental implementation of quantum information and quantum computing. Here, we report a breakthrough toward scalability: the simultaneous generation of a record 15 quadripartite entangled cluster states over 60 consecutive cavity modes (Qmodes), in the optical frequency comb of a single optical parametric oscillator. The amount of observed entanglement was constant over the 60 Qmodes, thereby proving the intrnisic scalability of this system. The number of observable Qmodes was restricted by technical limitations, and we conservatively estimate the actual number of similar clusters to be at least three times larger. This result paves the way to the realization of large entangled states for scalable quantum information and quantum computing.

•Mar 28, 2011•0 citations
One of the most scalable methods for continuous-variable quantum computing is to encode quantum information in the quantum optical frequency comb generated by an optical parametric oscillator (OPO). The scalability is limited by the quasiphasematching bandwidth and dispersion of the OPO. We study both factors in this article. The results show that 3200 qumodes are probably entangled in our recent demonstration of a record 60-qumode entanglement.
When it comes to practical quantum computing, the two main challenges are circumventing decoherence (devastating quantum errors due to interactions with the environmental bath) and achieving scalability (as many qubits as needed for a real-life, game-changing computation). We show that using, in lieu of qubits, the "qumodes" represented by the resonant fields of the quantum optical frequency comb of an optical parametric oscillator allows one to create bona fide, large scale quantum computing processors, pre-entangled in a cluster state. We detail our recent demonstration of 60-qumode entanglement (out of an estimated 3000) and present an extension to combining this frequency-tagged with time-tagged entanglement, in order to generate an arbitrarily large, universal quantum computing processor.
One-way quantum computing allows any quantum algorithm to be implemented easily using just measurements. The difficult part is creating the universal resource, a cluster state, on which the measurements are made. We propose a scalable method that uses a single, multimode optical parametric oscillator (OPO). The method is very efficient and generates a continuous-variable cluster state, universal for quantum computation, with quantum information encoded in the quadratures of the optical frequency comb of the OPO.
Scalability and coherence are two essential requirements for the experimental implementation of quantum information and quantum computing. Here, we report a breakthrough toward scalability: the simultaneous generation of a record 15 quadripartite entangled cluster states over 60 consecutive cavity modes (Qmodes), in the optical frequency comb of a single optical parametric oscillator. The amount of observed entanglement was constant over the 60 Qmodes, thereby proving the intrnisic scalability of this system. The number of observable Qmodes was restricted by technical limitations, and we conservatively estimate the actual number of similar clusters to be at least three times larger. This result paves the way to the realization of large entangled states for scalable quantum information and quantum computing.