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Silicon ring resonators are used as photon pair sources by taking advantage of silicon's large third order nonlinearity with a process known as spontaneous four wave mixing. These sources are capable of producing pairs of indistinguishable…

Quantum Physics · Physics 2018-02-14 C. C. Tison , J. A. Steidle , M. L. Fanto , Z. Wang , N. A. Mogent , A. Rizzo , S. F. Preble , P. M. Alsing

Efficiently generating photon pairs with high heralding efficiency and high single photon purity that are bandwidth matched to quantum emitters, quantum memories, and other matter-based qubits is critical for quantum networking…

Quantum Physics · Physics 2026-05-21 Ashwith Prabhu , Elizabeth A. Goldschmidt

Coherent conversion of microwave and optical photons in the single-quantum level can significantly expand our ability to process signals in various fields. Efficient up-conversion of a feeble signal in the microwave domain to the optical…

We have analyzed a five-level $\wedge$-configuration Four-Wave Mixing (FWM) scheme for obtaining a high-efficiency FWM based on the two electromagnetically induced transparency. We find that the maximum FWM efficiency is nearly 30%, which…

Atomic Physics · Physics 2015-05-14 Zhiping Wang , Shuangxi Zhang

We study a quantum-enhanced differential measurement scheme that uses quantum probes and single-photon detectors to measure a minute defect in the absorption parameter of an analyte under investigation. For the purpose, we consider two…

Quantum Physics · Physics 2022-04-07 Byeong-Yoon Go , Changhyoup Lee , Kwang-Geol Lee

Synthetic Aperture Radar (SAR) plays a vital role in remote sensing due to its ability to capture high-resolution images regardless of weather conditions or daylight. However, to transform the raw SAR signals into interpretable imagery,…

Quantum Physics · Physics 2026-05-07 Khalil Al Salahat , Mohamad El Moussawi , Ali J. Ghandour

Quantum metrology has been shown to surpass classical limits of correlation, resolution, and sensitivity. It has been introduced to interferometric Radar schemes, with intriguing preliminary results. Even quantum-inspired detection of…

Quantum Physics · Physics 2024-01-11 Leonid Vidro , Liran Shirizly , Naftali Kirsh , Nadav Katz , Hagai S. Eisenberg

Quantum spectroscopy seeks to probe chemical systems using nonclassical light, which has properties that are qualitatively and quantitatively different than conventional light sources. One promising technique uses intensity-correlated twin…

Quantum key distribution, which ensures information-theoretically secret key generation, is currently advancing through photonic integration to achieve high performance, cost reduction and compact size, thereby facilitating the large-scale…

Quantum Physics · Physics 2024-02-19 Yiming Bian , Yan Pan , Xuesong Xu , Liang Zhao , Yang Li , Wei Huang , Lei Zhang , Song Yu , Yichen Zhang , Bingjie Xu

Quantum computing, quantum communication and quantum networks rely on hybrid quantum systems operating in different frequency ranges. For instance, the superconducting qubits work in the gigahertz range, while the optical photons used in…

Quantum Physics · Physics 2024-09-06 Wei-Jiang Wu , Yi-Pu Wang , Jie Li , Gang Li , J. Q. You

We study quantum state tomography, entanglement detection, and channel noise reconstruction of propagating quantum microwaves via dual-path methods. The presented schemes make use of the following key elements: propagation channels, beam…

Quantum Physics · Physics 2014-01-09 R. Di Candia , E. P. Menzel , L. Zhong , F. Deppe , A. Marx , R. Gross , E. Solano

Hybrid analog/digital precoding in millimeter-wave (mmWave) multi-input multi-ouput (MIMO) systems is capable of achieving the near-optimal full-digital performance at reduced hardware cost and power consumption compared to its full-RF…

Information Theory · Computer Science 2020-11-26 Chenghao Feng , Wenqian Shen , Xinyu Gao , Jianping An , Lajos Hanzo

We show that quantum frequency conversion (QFC) can overcome the spectral distinguishability common to inhomogeneously broadened solid-state quantum emitters. QFC is implemented by combining single photons from an InAs quantum dot (QD) at…

Low-loss fiber optic links have the potential to connect superconducting quantum processors together over long distances to form large scale quantum networks. A key component of these future networks is a quantum transducer that coherently…

Four wave mixing (FWM) is an important way to generate supercontinuum and frequency combs in the mid-infrared band. Here, we obtain simultaneous synthetic FWM in the visible and mid-infrared bands by cascading quadratic nonlinear processes…

Frequency diverse (FD) radar waveforms are attractive in radar research and practice. By combining two typical FD waveforms, the frequency diverse array (FDA) and the stepped-frequency (SF) pulse train, we propose a general FD waveform…

Information Theory · Computer Science 2016-03-29 Yimin Liu , Le Xiao , Xiqin Wang , Arye Nehorai

Long distance transmission of quantum information is a central ingredient of distributed quantum information processors for both computing and secure communication. Transmission between superconducting/solid-state quantum processors…

Superconducting quantum systems (artificial atoms) have been recently successfully used to demonstrate on-chip effects of quantum optics with single atoms in the microwave range. In particular, a well-known effect of four-wave mixing could…

Quantum Physics · Physics 2017-11-08 A. Yu. Dmitriev , R. Shaikhaidarov , V. N. Antonov , T. Hönigl-Decrinis , O. V. Astafiev

Frequency-degenerate photon pairs generated using nonlinear photonic integrated devices are a crucial resource for scalable quantum information processing and metrology. However, their realization is hindered by unwanted parametric…

Multiple-input multiple-output (MIMO) mmWave devices broadcast multiple spatially-separated data streams simultaneously in order to increase data transfer rates. Data transfer can, however, be compromised by interference. Conventional…

Signal Processing · Electrical Eng. & Systems 2024-02-21 Joshua C. Lederman , Weipeng Zhang , Thomas Ferreira de Lima , Eric C. Blow , Simon Bilodeau , Bhavin J. Shastri , Paul R. Prucnal