EPJ Quantum Technology最新文献_第2页

LLM-generated tips rival expert-created tips in helping students answer quantum-computing questions

IF 5.8 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2025-03-04 DOI: 10.1140/epjqt/s40507-025-00334-5

Lars Krupp, Jonas Bley, Isacco Gobbi, Alexander Geng, Sabine Müller, Sungho Suh, Ali Moghiseh, Arcesio Castaneda Medina, Valeria Bartsch, Artur Widera, Herwig Ott, Paul Lukowicz, Jakob Karolus, Maximilian Kiefer-Emmanouilidis

{"title":"LLM-generated tips rival expert-created tips in helping students answer quantum-computing questions","authors":"Lars Krupp, Jonas Bley, Isacco Gobbi, Alexander Geng, Sabine Müller, Sungho Suh, Ali Moghiseh, Arcesio Castaneda Medina, Valeria Bartsch, Artur Widera, Herwig Ott, Paul Lukowicz, Jakob Karolus, Maximilian Kiefer-Emmanouilidis","doi":"10.1140/epjqt/s40507-025-00334-5","DOIUrl":"10.1140/epjqt/s40507-025-00334-5","url":null,"abstract":"<div><p>Alleviating high workloads for teachers is crucial for continuous high quality education. To evaluate if Large Language Models (LLMs) can alleviate this problem in the quantum computing domain, we conducted two complementary studies exploring the use of GPT-4 to automatically generate tips for students. (1) A between-subject survey in which students (N = 46) solved four multiple-choice quantum computing questions with either the help of expert-created or LLMgenerated tips. To correct for possible biases, we additionally introduced two deception conditions. (2) Experienced educators and students (N = 23) directly compared the LLM-generated and expert-created tips. Our results show that the LLM-generated tips were significantly more helpful and pointed better towards relevant concepts while also giving away more of the answers. Furthermore, we found that participants in the first study performed significantly better in answering the quantum computing questions when given tips labeled as LLM-generated, even if they were expert-created. This points towards a placebo effect induced by the participants’ biases for LLM-generated content. Ultimately, we contribute that LLM-generated tips can be used instead of expert tips to support teaching of quantum computing basics.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"12 1","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-025-00334-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

QSegRNN: quantum segment recurrent neural network for time series forecasting

IF 5.8 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2025-03-03 DOI: 10.1140/epjqt/s40507-025-00333-6

Kyeong-Hwan Moon, Seon-Geun Jeong, Won-Joo Hwang

{"title":"QSegRNN: quantum segment recurrent neural network for time series forecasting","authors":"Kyeong-Hwan Moon, Seon-Geun Jeong, Won-Joo Hwang","doi":"10.1140/epjqt/s40507-025-00333-6","DOIUrl":"10.1140/epjqt/s40507-025-00333-6","url":null,"abstract":"<div><p>Recently many data centers have been constructed for artificial intelligence (AI) research. The important condition of the data center is to supply sufficient electricity, resulting in many electricity transformers being installed. Especially, these electricity transformers have led to significant heat generation in many data centers. Therefore, managing the temperature of electricity transformers has emerged as an important task. Notably, numerous studies are being conducted to manage and forecast the temperature of electricity transformers using artificial intelligence models. However, as the size of predictive models increases and computational demands grow, substantial computing resources are required. Consequently, there are instances where the lack of computing resources makes these models difficult to operate. To address these challenges, we propose a quantum segment recurrent neural network (QSegRNN), a time series forecasting model utilizing quantum computing. QSegRNN leverages quantum computing to achieve comparable performance with fewer parameters than classical counterpart models under similar conditions. QSegRNN inspired by a classical SegRNN uses the quantum cell instead of the classical cell in the model. The advantage of this structure is that it can be designed with fewer parameters under similar architecture. To construct the quantum cell, we benchmark the quantum convolutional circuit with amplitude embedding as the variational quantum circuit, minimizing information loss while considering the limit of noisy intermediate-scale quantum (NISQ) devices. The experiment result illustrates that the forecasting performance of QSegRNN achieves better performance than SegRNN and other forecasting models even though QSegRNN has only 85 percent of the parameters.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"12 1","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-025-00333-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ramsey-Bordé atom interferometry with a thermal strontium beam for a compact optical clock

IF 5.8 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2025-03-03 DOI: 10.1140/epjqt/s40507-025-00332-7

Oliver Fartmann, Martin Jutisz, Amir Mahdian, Vladimir Schkolnik, Ingmari C. Tietje, Conrad Zimmermann, Markus Krutzik

{"title":"Ramsey-Bordé atom interferometry with a thermal strontium beam for a compact optical clock","authors":"Oliver Fartmann, Martin Jutisz, Amir Mahdian, Vladimir Schkolnik, Ingmari C. Tietje, Conrad Zimmermann, Markus Krutzik","doi":"10.1140/epjqt/s40507-025-00332-7","DOIUrl":"10.1140/epjqt/s40507-025-00332-7","url":null,"abstract":"<div><p>Compact optical atomic clocks have become increasingly important in field applications and clock networks. Systems based on Ramsey-Bordé interferometry (RBI) with a thermal atomic beam seem promising to fill a technology gap in optical atomic clocks, as they offer higher stability than optical vapour cell clocks while being less complex than cold atomic clocks.</p><p>Here, we demonstrate RBI with strontium atoms, utilizing the narrow <img> intercombination line at 689 nm, yielding a 60 kHz broad spectral feature. The obtained Ramsey fringes for varying laser power are analyzed and compared with a numerical model. The <img> transition at 461 nm is used for fluorescence detection. Analyzing the slope of the RBI signal and the fluorescence detection noise yields an estimated short-term stability of <span>(<4times 10^{-14} / sqrt{tau / {1~s}})</span>. We present our experimental setup in detail, including the atomic beam source, frequency-modulation spectroscopy to lock the 461 nm laser, laser power stabilization and the high-finesse cavity pre-stabilization of the 689 nm laser.</p><p>Our system serves as a ground testbed for future clock systems in mobile and space applications.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"12 1","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-025-00332-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimating the impact of light pollution on quantum communication between QEYSSat and Canadian quantum ground station sites

IF 5.8 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2025-02-27 DOI: 10.1140/epjqt/s40507-025-00331-8

Mathew Yastremski, Paul J. Godin, Nouralhoda Bayat, Sungeun Oh, Ziheng Chang, Katanya B. Kuntz, Daniel Oblak, Thomas Jennewein

{"title":"Estimating the impact of light pollution on quantum communication between QEYSSat and Canadian quantum ground station sites","authors":"Mathew Yastremski, Paul J. Godin, Nouralhoda Bayat, Sungeun Oh, Ziheng Chang, Katanya B. Kuntz, Daniel Oblak, Thomas Jennewein","doi":"10.1140/epjqt/s40507-025-00331-8","DOIUrl":"10.1140/epjqt/s40507-025-00331-8","url":null,"abstract":"<div><p>Satellite to ground quantum communication typically operates at night to reduce background signals, however it remains susceptible to noise from light pollution of the night sky. In this study we compare several methodologies for determining whether a Quantum Ground Station (QGS) site is viable for exchanging quantum signals with the upcoming Quantum Encryption and Science Satellite (QEYSSat) mission. We conducted ground site characterization studies at three locations in Canada: Waterloo, Ontario, Calgary, Alberta, and Priddis, Alberta. Using different methods we estimate the background counts expected to leak into the satellite-ground quantum channel, and determined whether the noise levels could prevent a quantum key transfer. We also investigate how satellite data recorded from the Visible Infrared Imaging Radiometer Suite (VIIRS) can help estimate conditions of a particular site, and find reasonable agreement with the locally recorded data. Our results indicate that the Waterloo, Calgary, and Priddis QGS sites should allow both quantum uplinks and downlinks with QEYSSat, despite their proximity to urban centres. Furthermore, our approach allows the use of satellite borne instrument data (VIIRS) to remotely and efficiently determine the potential of a ground site.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"12 1","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-025-00331-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Celebrating the International Year of Quantum Science and Technology

IF 5.8 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2025-02-27 DOI: 10.1140/epjqt/s40507-025-00336-3

Kai Bongs

引用次数: 0

Alternative pipeline for option pricing using quantum computers

IF 5.8 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2025-02-25 DOI: 10.1140/epjqt/s40507-025-00328-3

Alberto Manzano, Gonzalo Ferro, Álvaro Leitao, Carlos Vázquez, Andrés Gómez

引用次数: 0

Low-cost ODMR experiments with nitrogen-vacancy centers in diamonds: a didactical approach to theory and experiment

IF 5.8 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2025-02-21 DOI: 10.1140/epjqt/s40507-025-00326-5

Nils Haverkamp, Alexander Pusch, Markus Gregor, Stefan Heusler

{"title":"Low-cost ODMR experiments with nitrogen-vacancy centers in diamonds: a didactical approach to theory and experiment","authors":"Nils Haverkamp, Alexander Pusch, Markus Gregor, Stefan Heusler","doi":"10.1140/epjqt/s40507-025-00326-5","DOIUrl":"10.1140/epjqt/s40507-025-00326-5","url":null,"abstract":"<div><p>In recent years, nitrogen-vacancy centers in diamond have attracted much interest as tools for magnetic field sensing and imaging. Parallel to this progress in science, also in science education, huge advancements are seen, which might even be called an educational quantum revolution, which just has started to emerge.</p><p>In this article, we present an experimental setup for optically detectable magnetic resonance (ODMR) in micro-diamonds with nitrogen-vacancy centers (NV centers) which extends the recent work presented in Stegemann et al. (Eur J Phys. 44(3):035402, 2023) in view of better accessibility both from a technical perspective and from an didactical perspective. We improved the mechanical setup, and in particular the output of the measured values, which is now carried out by a microcontroller and is directly accessible to digital devices instead of the need of an oscilloscope. In this way, we increase the accessibility of the experimental setup for learners. Concerning modeling of the theoretical foundations, we discuss the importance of symmetries of the wave function for understanding quantum physics and introduce visualizations for the spin and orbit part of the wave function. Furthermore, we present first empirical data (<span>(N = 53)</span>), indicating possible paths for successful dissemination of the experiments to educators.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"12 1","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-025-00326-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

INTENTAS - an entanglement-enhanced atomic sensor for microgravity

IF 5.8 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2025-02-21 DOI: 10.1140/epjqt/s40507-025-00330-9

O. Anton, I. Bröckel, D. Derr, A. Fieguth, M. Franzke, M. Gärtner, E. Giese, J. S. Haase, J. Hamann, A. Heidt, S. Kanthak, C. Klempt, J. Kruse, M. Krutzik, S. Kubitza, C. Lotz, K. Müller, J. Pahl, E. M. Rasel, M. Schiemangk, W. P. Schleich, S. Schwertfeger, A. Wicht, L. Wörner

{"title":"INTENTAS - an entanglement-enhanced atomic sensor for microgravity","authors":"O. Anton, I. Bröckel, D. Derr, A. Fieguth, M. Franzke, M. Gärtner, E. Giese, J. S. Haase, J. Hamann, A. Heidt, S. Kanthak, C. Klempt, J. Kruse, M. Krutzik, S. Kubitza, C. Lotz, K. Müller, J. Pahl, E. M. Rasel, M. Schiemangk, W. P. Schleich, S. Schwertfeger, A. Wicht, L. Wörner","doi":"10.1140/epjqt/s40507-025-00330-9","DOIUrl":"10.1140/epjqt/s40507-025-00330-9","url":null,"abstract":"<div><p>The INTENTAS project aims to develop an atomic sensor utilizing entangled Bose-Einstein condensates (BECs) in a microgravity environment. This key achievement is necessary to advance the capability for measurements that benefit from both entanglement-enhanced sensitivities and extended interrogation times. The project addresses significant challenges related to size, weight, and power management (SWaP) specific to the experimental platform at the Einstein-Elevator in Hannover. The design ensures a low-noise environment essential for the creation and detection of entanglement. Additionally, the apparatus features an innovative approach to the all-optical creation of BECs, providing a flexible system for various configurations and meeting the requirements for rapid turnaround times. Successful demonstration of this technology in the Einstein-Elevator will pave the way for a future deployment in space, where its potential applications will unlock high-precision quantum sensing.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"12 1","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-025-00330-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integration of germanium-vacancy single photon emitters arrays in diamond nanopillars

IF 5.8 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2025-02-18 DOI: 10.1140/epjqt/s40507-025-00329-2

Elisa Redolfi, Vanna Pugliese, Elia Scattolo, Alessandro Cian, Elena Missale, Felipe Favaro de Oliveira, Gediminas Seniutinas, Sviatoslav Ditalia Tchernij, Rossana Dell’Anna, Paolo Traina, Paolo Olivero, Damiano Giubertoni, Jacopo Forneris

{"title":"Integration of germanium-vacancy single photon emitters arrays in diamond nanopillars","authors":"Elisa Redolfi, Vanna Pugliese, Elia Scattolo, Alessandro Cian, Elena Missale, Felipe Favaro de Oliveira, Gediminas Seniutinas, Sviatoslav Ditalia Tchernij, Rossana Dell’Anna, Paolo Traina, Paolo Olivero, Damiano Giubertoni, Jacopo Forneris","doi":"10.1140/epjqt/s40507-025-00329-2","DOIUrl":"10.1140/epjqt/s40507-025-00329-2","url":null,"abstract":"<div><p>The nanoscale fabrication of <i>μ</i>m-spaced single-photon emitter arrays is crucial for the development of integrated photonic chips. We report on the fabrication and systematic characterization of germanium-vacancy (GeV) color centers arrays in diamond obtained upon ion implantation at the nanoscale. Ge<sup>2+</sup> ion implantations at 35 keV and 70 keV energies were carried out using a focused ion beam (FIB) equipped with a liquid metal alloy ion source. The arrays of emitters are subsequently aligned to ø300 nm nanopillar waveguiding structures, fabricated using a combination of electron-beam lithography and plasma etching. The photon collection efficiency and photoluminescence (PL) signal-to-background ratio increased by a factor 8 with respect to the unstructured sample. The photophysical properties of the GeV emitters fabricated by this approach were unaltered with respect to those found in unprocessed diamond. The efficiency of the overall manufacturing process to fabricate individual GeV centers was assessed. Up to 33% of the fabricated nanopillars, depending on ion implantation parameters, were found to contain single emitters.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"12 1","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-025-00329-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pulse shape optimization against Doppler shifts and delays in optical quantum communication

IF 5.8 2区物理与天体物理

EPJ Quantum Technology Pub Date : 2025-02-14 DOI: 10.1140/epjqt/s40507-025-00321-w

Emanuel Schlake, Roy Barzel, Dennis Rätzel, Claus Lämmerzahl

引用次数: 0