Article
Optics
Kazuhiro Kuruma, Hironobu Yoshimi, Yasutomo Ota, Ryota Katsumi, Masahiro Kakuda, Yasuhiko Arakawa, Satoshi Iwamoto
Summary: This study reports single-photon sources using single quantum dots embedded in topological slow light waveguides based on valley photonic crystals. The experiment demonstrates Purcell-enhanced single-photon emission in a topological slow light mode with a group index over 20, showing robust propagation even under sharp bends.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
Adrian J. Menssen, Artur Hermans, Ian Christen, Thomas Propson, Chao Li, Andrew J. Leenheer, Matthew Zimmermann, Mark Dong, Hugo Larocque, Hamza Raniwala, Gerald Gilbert, Matt Eichenfield
Summary: Advances in laser technology have driven discoveries in atomic, molecular, and optical physics and applications. To meet the requirements of manipulating light fields at specific wavelengths in the visible or near-infrared spectrum, scientists have proposed an atom control architecture based on photonic integrated circuit technology. They demonstrated a silicon nitride-based atom control device with 16 channels, achieving fast response times and high extinction ratio.
Article
Chemistry, Multidisciplinary
Maxim Rakhlin, Grigorii Klimko, Sergey Sorokin, Marina Kulagina, Yurii Zadiranov, Dmitrii Kazanov, Tatiana Shubina, Sergey Ivanov, Alexey Toropov
Summary: This paper reports on single-photon emitters designed for the telecommunication O-band. These emitters consist of InAs/(In)GaAs quantum dots with asymmetric barriers placed inside semiconductor tapered nanocolumns acting as photonic nanoantennas. The implemented design allows for a shift in the quantum dot radiation wavelength towards the O-band, and the nanoantennas collect and effectively output the radiation. With non-resonant optical pumping, the average count rate of emitted single photons exceeds 10 MHz, with a second-order correlation function g((2))(0) = 0.18 at 8 K.
Article
Chemistry, Multidisciplinary
Xujing Liu, Yinhui Kan, Shailesh Kumar, Liudmilla F. Kulikova, Valery A. Davydov, Viatcheslav N. Agafonov, Changying Zhao, Sergey I. Bozhevolnyi
Summary: This article introduces a new design for ultracompact single-photon sources, which can generate linearly polarized vortex beams using quantum emitter-coupled metasurfaces. The authors successfully demonstrate on-chip single-photon generation and realize the multiplexing of different topological charges of orthogonal linearly polarized single photons through multiple channels, demonstrating their entanglement. This research suggests that ultracompact quantum emitter-coupled metasurfaces have the potential to be a new quantum optics platform for chip-integrated high-dimensional single-photon sources.
ADVANCED MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Kee Suk Hong, Hee-Jin Lim, Dong Hoon Lee, In-Ho Bae, Kwang-Yong Jeong, Christoph Becher, Sejeong Kim, Igor Aharonovich
Summary: Single-photon sources based on single emitters are highly interesting for various applications and have been realized using different materials. Common factors related to relaxation times of internal states indirectly affect the photon number stability. GaN emitters demonstrate higher stability due to faster relaxation times compared to hBN emitters, but hBN emitters have higher photon generation rates. Repeatable radiant flux measurements of a bright hBN single-photon emitter for a wide range of fluxes have been demonstrated.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Review
Chemistry, Physical
C. Toninelli, I Gerhardt, A. S. Clark, A. Reserbat-Plantey, S. Goetzinger, Z. Ristanovic, M. Colautti, P. Lombardi, K. D. Major, I Deperasinska, W. H. Pernice, F. H. L. Koppens, B. Kozankiewicz, A. Gourdon, V Sandoghdar, M. Orrit
Summary: Isolating single molecules in the solid state allows for fundamental experiments in basic and applied sciences, with certain molecules showing unique properties when cooled to liquid helium temperature. These molecules can serve as single-photon sources and exhibit competitive performance as nonlinear elements.
Article
Chemistry, Multidisciplinary
D. Andrew Golter, Genevieve Clark, Tareq El Dandachi, Stefan Krastanov, Andrew J. Leenheer, Noel H. Wan, Hamza Raniwala, Matthew Zimmermann, Mark Dong, Kevin C. Chen, Linsen Li, Matt Eichenfield, Gerald Gilbert, Dirk Englund
Summary: Researchers have proposed a quantum memory-integrated photonics platform that can integrate multiple diamond color center spins into a programmable photonic integrated circuit and selectively manipulate individual spin qubits using tunable magnetic field gradients, enabling the scalability of quantum networks.
Article
Chemistry, Multidisciplinary
Minho Choi, Mireu Lee, Sung-Yul L. Park, Byung Su Kim, Seongmoon Jun, Suk In Park, Jin Dong Song, Young-Ho Ko, Yong-Hoon Cho
Summary: In this study, a method is proposed to deterministically integrate single quantum dots with tailor-made photonic structures. A nondestructive luminescence picking method called nanoscale-focus pinspot (NFP) is used to reduce the luminous quantum dot density. The selected quantum dot is then deterministically integrated with a tailor-made photonic structure, leading to improved extraction efficiency.
ADVANCED MATERIALS
(2023)
Article
Optics
Donghwa Lee, Jinil Lee, Seongjin Hong, Hyang-Tag Lim, Young-Wook Cho, Sang-Wook Han, Hyundong Shin, Junaid Ur Rehman, Yong-Su Kim
Summary: Variational quantum algorithms, a representative class of modern quantum algorithms, offer practical uses of near-term quantum processors. This study presents an alternative approach to increase the Hilbert space by utilizing multiple degrees of freedom in individual quantum systems. They experimentally implement a variational quantum eigensolver (VQE) using four-dimensional photonic quantum states and employ a quantum error mitigation protocol to reduce noise effects. Their photonic VQE accurately estimates the bond dissociation curve of the He - H+ cation, even in the presence of large noise in the quantum processing unit. The study also discusses potential resource-efficient enhancements in photonic quantum processors.
Article
Chemistry, Multidisciplinary
Chenglian Zhu, Malwina Marczak, Leon Feld, Simon C. Boehme, Caterina Bernasconi, Anastasiia Moskalenko, Ihor Cherniukh, Dmitry Dirin, Maryna Bodnarchuk, Maksym Kovalenko, Gabriele Raino
Summary: Attaining pure single-photon emission is crucial for quantum technologies. Over the past 20 years, researchers have developed various solid-state quantum emitters, but most of them require complex techniques. However, using quantum emitters that can operate at room temperature can greatly reduce system complexity.
Article
Engineering, Electrical & Electronic
Pierre-Antoine Mouny, Yann Beilliard, Sebastien Graveline, Marc-Antoine Roux, Abdelouadoud El Mesoudy, Raphael Dawant, Pierre Gliech, Serge Ecoffey, Fabien Alibart, Michel Pioro-Ladriere, Dominique Drouin
Summary: Current quantum systems based on spin qubits suffer from a bottleneck caused by the use of classical electronics located outside the cryostat. To address this issue, a scalable memristor-based programmable dc source is proposed to control the biasing of quantum dots (QDs) inside the cryostat. Experimental resistance programming and simulations demonstrate the feasibility of this cryogenic approach, showing a wide voltage range and high resolution in situ memristor-based dc source for controlling double quantum dots (DQDs).
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Chemistry, Multidisciplinary
Dan Dalacu, Philip J. Poole, Robin L. Williams
Summary: The geometry of nanowires plays a crucial role in determining the rate of photon generation and efficiency of photon collection in non-classical light sources. By embedding quantum dots in nanowires with tailored geometries, high efficiency single photon generation with minimal multi-photon emissions can be achieved.
Review
Quantum Science & Technology
Liangliang Lu, Xiaodong Zheng, Yanqing Lu, Shining Zhu, Xiao-Song Ma
Summary: Quantum photonic systems have achieved remarkable success in computing and communication, with photons as carriers of quantum information being highly robust against decoherence. Integrated photonics, compatible with CMOS fabrication, has significant advantages in large-scale quantum information processing. A key task is to improve the performance of individual components and integrate them on a common substrate.
ADVANCED QUANTUM TECHNOLOGIES
(2021)
Article
Engineering, Electrical & Electronic
Jennifer Aldama, Samael Sarmiento, Ignacio H. Lopez H. Grande, Stefano Signorini, Luis Trigo Vidarte, Valerio Pruneri
Summary: Quantum key distribution (QKD) and quantum random number generation (QRNG) are crucial for data communication security in the future. Integrating these technologies into a single photonic integrated circuit (PIC) can significantly improve performance and reliability. While current implementations using commercial photonic components are mature, integrating all functionalities into a PIC can reduce size, weight, complexity, cost, and power consumption.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Optics
Shan Xiao, Shiyao Wu, Xin Xie, Jingnan Yang, Wenqi Wei, Shushu Shi, Feilong Song, Jianchen Dang, Sibai Sun, Longlong Yang, Yunuan Wang, Sai Yan, Zhanchun Zuo, Ting Wang, Jianjun Zhang, Kuijuan Jin, Xiulai Xu
Summary: Chiral quantum optics has attracted interest in the field of quantum information science. By exploiting spin-polarization properties and engineering rational photonic nanostructures, information can be transformed in compact chiral photonic circuits with deterministic circularly polarized chiral routing and beamsplitting.
LASER & PHOTONICS REVIEWS
(2021)
Article
Physics, Applied
Ryan Hamerly, Saumil Bandyopadhyay, Dirk Englund
Summary: In this study, a new configuration algorithm is proposed to overcome the limitations of rectangular mesh interferometers in terms of fabrication errors and reduce the impact of errors on the performance of the interferometer. The algorithm is robust, requires no prior knowledge of process variations, and relies only on external sources and detectors.
PHYSICAL REVIEW APPLIED
(2022)
Article
Physics, Applied
Ryan Hamerly, Saumil Bandyopadhyay, Dirk Englund
Summary: This paper highlights the importance of algorithmic stability in self-configuration and proposes a self-configuration scheme for both triangular and rectangular meshes.
PHYSICAL REVIEW APPLIED
(2022)
Article
Quantum Science & Technology
Yuan Lee, Eric Bersin, Axel Dahlberg, Stephanie Wehner, Dirk Englund
Summary: The past decade has seen significant progress in experimentally realizing the building blocks of quantum repeaters. A quantum router architecture comprising many quantum memories connected in a photonic switchboard has been proposed to maintain entanglement fidelity over long-distance links and improve entanglement distribution rates. This architecture enables channel-loss-invariant fidelity and automatically prioritizes entanglement flows across the network, without requiring global network information.
NPJ QUANTUM INFORMATION
(2022)
Article
Optics
Rui Tang, Makoto Okano, Kasidit Toprasertpong, Shinichi Takagi, Dirk Englund, Mitsuru Takenaka
Summary: This study proposes a novel photonic integrated circuit (PIC) architecture for accelerated matrix multiplication, addressing the issue of hardware errors increasing with device scale in previous architectures. Additionally, a PIC architecture for general matrix-matrix multiplication (GEMM) is developed to enable high-energy efficiency computing on photonic chips.
Article
Physics, Applied
Hyeongrak Choi, Lamia Ateshian, Mikkel Heuck, Dirk Englund
Summary: The majority of coherent optical radiation sources rely on laser oscillators driven by population inversion. However, accessing the frequency range of 0.1-10 THz (the terahertz gap) remains a challenge. This study proposes a method to produce coherent radiation spanning the THz gap using low-loss dielectric structures. The approach shows potential for high conversion efficiencies and the ability to bridge the THz gap with only 1 W of input power.
PHYSICAL REVIEW APPLIED
(2022)
Article
Quantum Science & Technology
Stefan Krastanov, Kurt Jacobs, Gerald Gilbert, Dirk R. Englund, Mikkel Heuck
Summary: In this work, we propose an architecture for achieving high-fidelity deterministic quantum logic gates on dual-rail encoded photonic qubits. The qubits are manipulated by allowing photons to interact with a two-level emitter (TLE) inside an optical cavity. We use a quantum control process to actively load and unload photons from the cavity, while dynamically altering their effective coupling to the TLE. Our numerical simulations show that III-V quantum dots in GaAs membranes hold promise as a platform for photonic quantum information processing.
NPJ QUANTUM INFORMATION
(2022)
Article
Optics
Christopher L. Panuski, Ian Christen, Momchil Minkov, Cole J. Brabec, Sivan Trajtenberg-Mills, Alexander D. Griffiths, Jonathan J. D. McKendry, Gerald L. Leake, Daniel J. Coleman, Cung Tran, Jeffrey St Louis, John Mucci, Cameron Horvath, Jocelyn N. Westwood-Bachman, Stefan F. Preble, Martin D. Dawson, Michael J. Strain, Michael L. Fanto, Dirk R. Englund
Summary: This study demonstrates the complete control of optical fields by using a programmable photonic crystal cavity array. The researchers achieved near-complete spatiotemporal control of a 64-resonator, two-dimensional spatial light modulator through the integration of four key advances, including high-fidelity coupling, scalable fabrication, precise resonance alignment, and out-of-plane cavity control. This work opens up new possibilities for programmability at the fundamental limits of multimode optical control.
Article
Nanoscience & Nanotechnology
Jasvith Raj Basani, Sri Krishna Vadlamani, Saumil Bandyopadhyay, Dirk R. R. Englund, Ryan Hamerly
Summary: This paper presents a novel architecture for multiport interferometers based on the sine-cosine fractal decomposition of a unitary matrix. The unique self-similarity and modularity of our design offer improved resilience to hardware imperfections compared to conventional multiport interferometers. Numerical simulations show that truncation of these meshes gives robust performance even under large fabrication errors, making it a significant advancement in large-scale programmable photonics for practical machine learning and quantum computing applications.
Article
Nanoscience & Nanotechnology
Laura Kim, Hyeongrak Choi, Matthew E. E. Trusheim, Hanfeng Wang, Dirk R. R. Englund
Summary: Nitrogen vacancy centers in diamond provide a spin-based qubit system with long coherence time even at room temperature, making them suitable ambient-condition quantum sensors for quantities including electromagnetic fields, temperature, and rotation. The optically addressable level structures of NV spins allow transduction of spin information onto light-field intensity. The sub-optimal readout fidelity of conventional fluorescence measurement remains a significant drawback for room-temperature ensemble sensing. Here, we discuss nanophotonic interfaces that provide opportunities to achieve near-unity readout fidelity based on IR absorption via resonantly enhanced spin-optic coupling. Spin-coupled resonant nanophotonic devices are projected to particularly benefit applications that utilize micro- to nanoscale sensing volume and to outperform present methods in their volume-normalized sensitivity.
Article
Multidisciplinary Sciences
Hanfeng Wang, Matthew E. Trusheim, Laura Kim, Hamza Raniwala, Dirk R. Englund
Summary: This study proposes a programmable architecture based on diamond color centers driven by electric or strain fields, aiming to reduce power consumption and cross-talk constraints in large-scale quantum networks. By densely packing diamond color centers in a programmable electrode array and driving quantum gates with electric or strain fields, this 'field programmable spin array’ (FPSA) enables high-speed control of individual color centers with low cross-talk and power dissipation. Integrated with a slow-light waveguide for efficient optical coupling, the FPSA serves as a quantum interface for optically-mediated entanglement, showing increased entanglement generation rate scaling into the thousand-qubit regime.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Xiyuan Lu, Mingkang Wang, Feng Zhou, Mikkel Heuck, Wenqi Zhu, Vladimir A. Aksyuk, Dirk R. Englund, Kartik Srinivasan
Summary: The authors demonstrate a method for generating orbital angular momentum (OAM) using photonic crystal ring resonators, while maintaining high cavity quality factors (up to 10^6). By ejecting high angular momentum states of a whispering gallery mode (WGM) microresonator through a grating-assisted mechanism, a scalable and chip-integrated solution for OAM generation is achieved.
NATURE COMMUNICATIONS
(2023)
Article
Physics, Applied
Uday Saha, James D. Siverns, John Hannegan, Mihika Prabhu, Qudsia Quraishi, Dirk Englund, Edo Waks
Summary: In this work, we demonstrate the routing of single photons from a trapped ion using a photonic integrated circuit. The emission of the ion is matched to the operating wavelength of the circuit through quantum frequency conversion. Programmable phase shifters are used to switch the single photons between output channels and achieve a 50:50 beam splitting condition. These results are important for programmable routing and entanglement distribution in large-scale quantum networks and distributed quantum computers.
PHYSICAL REVIEW APPLIED
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Alexander Sludds, Ryan Hamerly, Saumil Bandyopadhyay, Zhizhen Zhong, Zaijun Chen, Liane Bernstein, Manya Ghobadi, Dirk Englund
Summary: In this paper, we present experimental demonstrations of ultra-low power edge computing enabled by wavelength division multiplexed optical links and time-integrating optical receivers. The initial experiments show optical energy per MAC less than or similar to 10 fJ.
2022 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC)
(2022)
Proceedings Paper
Computer Science, Hardware & Architecture
Hyeongrak Choi, Marc Grau Davis, Dirk Englund
Summary: We propose optimal quantum tree network (QTN) designs that are congestion-free, use only local information for routing, completely cover 2D surfaces, and have logarithmic overhead. In cases dominated by insertion loss and limited by local gates, the overhead is logarithmic (log(N)), but in general scenarios, repeater chains can be engaged to achieve poly-logarithmic overhead.
2022 IEEE/ACM 7TH SYMPOSIUM ON EDGE COMPUTING (SEC 2022)
(2022)
Article
Optics
Grecia Castelazo, Quynh T. Nguyen, Giacomo De Palma, Dirk Englund, Seth Lloyd, Bobak T. Kiani
Summary: In this paper, we present efficient quantum algorithms for performing linear group convolutions and cross-correlations on quantum states. The runtimes of our algorithms are poly-logarithmic in the group's dimension and the desired error. Inspired by the literature on quantum algorithms for solving algebraic problems, our theoretical framework paves the way for quantizing many algorithms in machine learning and numerical methods that employ group operations.
