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Compact, scalable, and multiplexed fluorescence lifetime sensors are of great interest for point-of-care diagnostics. However, current solutions either lack broad-range wavelength-tuning capabilities or involve complex optical setups that…

Deterministic sources of high-fidelity entangled qubit pairs encoded in the dual-rail photonic basis, i.e., presence of a single photon in one of two orthogonal modes, are a key enabling technology of many applications of quantum…

Quantum Physics · Physics 2022-03-31 Prajit Dhara , Spencer J. Johnson , Christos N. Gagatsos , Paul G. Kwiat , Saikat Guha

With high integration density and excellent optical properties, silicon photonics is becoming a promising platform for complete integration and large-scale optical quantum information processing. Scalable quantum information applications…

Quantum Physics · Physics 2022-08-11 Lantian Feng , Ming Zhang , Jianwei Wang , Xiaoqi Zhou , Xiaogang Qiang , Guangcan Guo , Xifeng Ren

Detectors inherently capable of resolving photon numbers have undergone a significant development recently, and this is expected to affect multiplexed periodic single-photon sources where such detectors can find their applications. We…

Quantum Physics · Physics 2020-07-29 Ferenc Bodog , Matyas Mechler , Matyas Koniorczyk , Peter Adam

Silicon photonics enables scaling of quantum photonic systems by allowing the creation of extensive, low-loss, reconfigurable networks linking various functional on-chip elements. Inclusion of single quantum emitters onto photonic circuits,…

Frequency-multiplexed quantum communication usually requires a single-shot identification of the frequency mode of a single photon . In this paper, we propose a scheme that can identify the frequency mode with high-resolution even for…

Quantum Physics · Physics 2022-11-04 Daisuke Yoshida , Mayuka Ichihara , Takeshi Kondo , Feng-Lei Hong , Tomoyuki Horikiri

We make a thorough analysis of heralded single photon sources regarding how factors such as the detector gate-period, the photon rates, the fiber coupling efficiencies, and the system losses affect the performance of the source. In the…

Quantum Physics · Physics 2007-06-21 Maria Tengner , Daniel Ljunggren

Connecting multiple processors via quantum interconnect technologies could help overcome scalability issues in single-processor quantum computers. Transmission via these interconnects can be performed more efficiently using quantum…

Controlling large-scale many-body quantum systems at the level of single photons and single atomic systems is a central goal in quantum information science and technology. Intensive research and development has propelled foundry-based…

Entanglement--one of the most delicate phenomena in nature--is an essential resource for quantum information applications. Large entangled cluster states have been predicted to enable universal quantum computation, with the required single-…

The scaling barriers currently faced by both quantum networking and quantum computing technologies ultimately amount to the same core challenge of distributing high-quality entanglement at scale. In this Perspective, a novel quantum…

Quantum Physics · Physics 2023-11-09 Stephanie Simmons

The ability to manipulate single photons is of critical importance for fundamental quantum optics studies and practical implementations of quantum communications. While extraordinary progresses have been made in controlling spatial,…

Photonic entanglement source and quantum memory are two basic building blocks of linear-optical quantum computation and long-distance quantum communication. In the past decades, intensive researches have been carried out, and remarkable…

Low noise single-photon sources are a critical element for quantum technologies. We present a heralded single-photon source with an extremely low level of residual background photons, by implementing low-jitter detectors and electronics and…

Quantum computer, harnessing quantum superposition to boost a parallel computational power, promises to outperform its classical counterparts and offer an exponentially increased scaling. The term "quantum advantage" was proposed to mark…

The dependence of the quantum efficiency on the angle and polarization of the incident photon needs to be formulated for a precise description of the response of photomultiplier tubes. A simplified one-step model of photoelectron emission…

Instrumentation and Detectors · Physics 2023-02-27 Kodai Matsuoka

The sources, which generate atom-photon quantum correlations or entanglement based on quantum memory, are basic blocks for building quantum repeaters (QRs). For achieving highly entanglement-generation rates in ensemble-based QRs, spatial-,…

Quantum Physics · Physics 2019-07-31 Yafei Wen , Pai Zhou , Zhongxiao Xu , Liang Yuan , Haoyi Zhang , Shengzhi Wang , Long Tian , Shujing Li , Hai Wang

The cascade-emitted biphotons generated from the alkali metal atomic ensembles are an excellent entanglement resource which enables long-distance quantum communication. The communication of quantum information between distant locations can…

Quantum Physics · Physics 2022-06-15 Y. -E. Wong , T. H. Chang , H. H. Jen

The conversion and interaction between quantum signals at a single-photon level are essential for scalable quantum photonic information technology. Using a fully-optimized, periodically-poled lithium niobate microring, we demonstrate…

Optics · Physics 2021-05-04 Jia-Yang Chen , Zhan Li , Zhaohui Ma , Chao Tang , Heng Fan , Yong Meng Sua , Yu-Ping Huang

The scaling up of quantum hardware is the fundamental challenge ahead in order to realize the disruptive potential of quantum technology in information science. Among the plethora of hardware platforms, photonics stands out by offering a…

Quantum Physics · Physics 2021-10-22 Ravitej Uppu , Leonardo Midolo , Xiaoyan Zhou , Jacques Carolan , Peter Lodahl