Pub Date : 2022-08-26DOI: 10.1364/quantum.2022.qth3c.3
A. Rahmouni, T. Gerrits, O. Slattery
The aim of this work is to develop low-cost, portable/rack-mounted, robust, and reliable tools for a quantum network testbed. We report our progress on the development of well-characterized prototypes of single-photon sources and receivers.
{"title":"Progress towards a portable polarization-entangled photon source & receiver toolset for quantum network metrology","authors":"A. Rahmouni, T. Gerrits, O. Slattery","doi":"10.1364/quantum.2022.qth3c.3","DOIUrl":"https://doi.org/10.1364/quantum.2022.qth3c.3","url":null,"abstract":"The aim of this work is to develop low-cost, portable/rack-mounted, robust, and reliable tools for a quantum network testbed. We report our progress on the development of well-characterized prototypes of single-photon sources and receivers.","PeriodicalId":369002,"journal":{"name":"Quantum 2.0 Conference and Exhibition","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114719659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-13DOI: 10.1364/quantum.2022.qtu4c.1
Karol Lukanowski, Maria Balanz'o-Juand'o, M. Farkas, A. Ac'in, Jan Kolody'nski
We provide an efficient, generic tool for upper-bounding key rates in device-independent quantum key distribution (DIQKD) and prove that Bell nonlocality is not suf-ficient for the security of standard DIQKD protocols.
{"title":"Upper Bounds on Key Rates in Device-Independent Quantum Key Distribution Based on Convex-Combination Attacks","authors":"Karol Lukanowski, Maria Balanz'o-Juand'o, M. Farkas, A. Ac'in, Jan Kolody'nski","doi":"10.1364/quantum.2022.qtu4c.1","DOIUrl":"https://doi.org/10.1364/quantum.2022.qtu4c.1","url":null,"abstract":"We provide an efficient, generic tool for upper-bounding key rates in device-independent quantum key distribution (DIQKD) and prove that Bell nonlocality is not suf-ficient for the security of standard DIQKD protocols.","PeriodicalId":369002,"journal":{"name":"Quantum 2.0 Conference and Exhibition","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131945594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-24DOI: 10.1364/quantum.2022.qm4a.2
Yanzhu Chen, Linghua Zhu, Chenxu Liu, N. Mayhall, Edwin Barnes, S. Economou
ADAPT-QAOA, a novel problem-tailored version of quantum approximate optimization algorithm, speeds up convergence using entangling operators while reducing the total number of CNOTs. We explore how much entanglement is required to speed up optimization algorithms.
{"title":"How Much Entanglement Do Quantum Optimization Algorithms Require?","authors":"Yanzhu Chen, Linghua Zhu, Chenxu Liu, N. Mayhall, Edwin Barnes, S. Economou","doi":"10.1364/quantum.2022.qm4a.2","DOIUrl":"https://doi.org/10.1364/quantum.2022.qm4a.2","url":null,"abstract":"ADAPT-QAOA, a novel problem-tailored version of quantum approximate optimization algorithm, speeds up convergence using entangling operators while reducing the total number of CNOTs. We explore how much entanglement is required to speed up optimization algorithms.","PeriodicalId":369002,"journal":{"name":"Quantum 2.0 Conference and Exhibition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129874122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-27DOI: 10.1364/quantum.2022.qtu2a.7
Changqing Wang, Silvia Zorzetti
We propose a novel quantum transduction hybrid system based on the coupling of long-coherence time superconducting cavities with electro-optic resonators to achieve high-efficiency and high-fidelity in quantum communication protocols and quantum sensing.
{"title":"High-fidelity quantum transduction with long coherence time superconducting resonators","authors":"Changqing Wang, Silvia Zorzetti","doi":"10.1364/quantum.2022.qtu2a.7","DOIUrl":"https://doi.org/10.1364/quantum.2022.qtu2a.7","url":null,"abstract":"We propose a novel quantum transduction hybrid system based on the coupling of long-coherence time superconducting cavities with electro-optic resonators to achieve high-efficiency and high-fidelity in quantum communication protocols and quantum sensing.","PeriodicalId":369002,"journal":{"name":"Quantum 2.0 Conference and Exhibition","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134314640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-18DOI: 10.1364/quantum.2022.qw2a.48
S. Vintskevich, D. Grigoriev
We propose a novel approach to link multipartite quantum systems - quantum reservoirs into a network to implement quantum reservoir computing. We present the machine learning-based heuristics to optimize performance and information transfer between systems.
{"title":"Computing with two quantum reservoirs connected via optimized two-qubit nonselective measurements","authors":"S. Vintskevich, D. Grigoriev","doi":"10.1364/quantum.2022.qw2a.48","DOIUrl":"https://doi.org/10.1364/quantum.2022.qw2a.48","url":null,"abstract":"We propose a novel approach to link multipartite quantum systems - quantum reservoirs into a network to implement quantum reservoir computing. We present the machine learning-based heuristics to optimize performance and information transfer between systems.","PeriodicalId":369002,"journal":{"name":"Quantum 2.0 Conference and Exhibition","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134151769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-03DOI: 10.1364/quantum.2022.qtu2a.21
Chenxu Liu, Edwin Barnes, S. Economou
We propose to use transmon qubits to construct microwave 2D cluster states and repeater graph states. We design the generation circuits and compare the state fidelities of fixed- versus tunable-frequency transmon devices.
{"title":"Proposal for Generating Complex Microwave Graph States Using Superconducting Circuits","authors":"Chenxu Liu, Edwin Barnes, S. Economou","doi":"10.1364/quantum.2022.qtu2a.21","DOIUrl":"https://doi.org/10.1364/quantum.2022.qtu2a.21","url":null,"abstract":"We propose to use transmon qubits to construct microwave 2D cluster states and repeater graph states. We design the generation circuits and compare the state fidelities of fixed- versus tunable-frequency transmon devices.","PeriodicalId":369002,"journal":{"name":"Quantum 2.0 Conference and Exhibition","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128401251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-10DOI: 10.1364/quantum.2022.qw2a.39
Marcin Jarzyna
I derive ultimate lower bound on the precision of polarization estimation for classical coherent light. I show that it is attainable with conventional detection schemes and discuss role of the global phase in this problem.
{"title":"Quantum limits to polarization measurement of classical light","authors":"Marcin Jarzyna","doi":"10.1364/quantum.2022.qw2a.39","DOIUrl":"https://doi.org/10.1364/quantum.2022.qw2a.39","url":null,"abstract":"I derive ultimate lower bound on the precision of polarization estimation for classical coherent light. I show that it is attainable with conventional detection schemes and discuss role of the global phase in this problem.","PeriodicalId":369002,"journal":{"name":"Quantum 2.0 Conference and Exhibition","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134549262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-15DOI: 10.1103/PhysRevA.106.062424
Zahra Raissi, Adam Burchardt, Edwin Barnes
We uncover a large class of graph states that are maximally multipartite entangled. At least some of these are inequivalent under stochastic-local-operations and classical communication, as we show explicitly for a certain hierarchical subset.
{"title":"General stabilizer approach for constructing highly entangled graph states","authors":"Zahra Raissi, Adam Burchardt, Edwin Barnes","doi":"10.1103/PhysRevA.106.062424","DOIUrl":"https://doi.org/10.1103/PhysRevA.106.062424","url":null,"abstract":"We uncover a large class of graph states that are maximally multipartite entangled. At least some of these are inequivalent under stochastic-local-operations and classical communication, as we show explicitly for a certain hierarchical subset.","PeriodicalId":369002,"journal":{"name":"Quantum 2.0 Conference and Exhibition","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124356626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We demonstrate a direct single-source method for absolute measurement of nonlinearity of SPADs and SNSPDs with unprecedented accuracy. We discover supralinear behavior of SPADs and show that it cannot be explained using known theoretical models.
{"title":"Experimental observation of anomalous supralinear response of single-photon detectors","authors":"J. Hloušek, I. Straka, M. Ježek","doi":"10.1063/5.0106987","DOIUrl":"https://doi.org/10.1063/5.0106987","url":null,"abstract":"We demonstrate a direct single-source method for absolute measurement of nonlinearity of SPADs and SNSPDs with unprecedented accuracy. We discover supralinear behavior of SPADs and show that it cannot be explained using known theoretical models.","PeriodicalId":369002,"journal":{"name":"Quantum 2.0 Conference and Exhibition","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128468692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-02DOI: 10.1364/quantum.2022.qw2a.15
A. S. Popova, A. N. Rubtsov
Here we challenge the quantum advantage claimed for the Gaussian Boson Sampling experiment by introducing an approximate polynomial-time algorithm. Our fourth-order approximation gives an accuracy comparable with that of the experiment.
{"title":"Cracking the Quantum Advantage Threshold for Gaussian Boson Sampling","authors":"A. S. Popova, A. N. Rubtsov","doi":"10.1364/quantum.2022.qw2a.15","DOIUrl":"https://doi.org/10.1364/quantum.2022.qw2a.15","url":null,"abstract":"Here we challenge the quantum advantage claimed for the Gaussian Boson Sampling experiment by introducing an approximate polynomial-time algorithm. Our fourth-order approximation gives an accuracy comparable with that of the experiment.","PeriodicalId":369002,"journal":{"name":"Quantum 2.0 Conference and Exhibition","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114701384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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