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We report the results of an in-depth study of the role of graph topology on quantum transport efficiency in random removal and Watts-Strogatz networks. By using four different environmental models -- noiseless, driving by classical random…

Quantum Physics · Physics 2023-03-17 Arzu Kurt , Matteo A. C. Rossi , Jyrki Piilo

Long-distance optical quantum channels are necessarily lossy, leading to errors in transmitted quantum information, entanglement degradation and, ultimately, poor protocol performance. Quantum states carrying information in the channel can…

Current quantum technologies are at the cusp of becoming useful, but still face formidable obstacles such as noise. Noise severely limits the ability to scale quantum devices to the point that they would offer an advantage over classical…

To mitigate the noise in quantum channels, calibration is used to tune the devices to minimize error. Generally, calibration is performed by transmitting pre-agreed-upon calibration states and determining an error cost so the two parties…

Quantum Physics · Physics 2024-04-23 Ankit Khandelwal , Stephen DiAdamo

Noisy quantum channels may be used in many information carrying applications. We show that different applications may result in different channel capacities. Upper bounds on several of these capacities are proved. These bounds are based on…

Quantum Physics · Physics 2009-10-30 Howard Barnum , M. A. Nielsen , Benjamin Schumacher

Routing of photon play a key role in optical communication networks and quantum networks. Although the quantum routing of signals has been investigated in various systems both in theory and experiment, the general form of quantum routing…

Quantum Physics · Physics 2014-10-20 Peng-Cheng Ma , Jian-Qi Zhang , Yin Xiao , Mang Feng , Zhi-Ming Zhang

This paper considers quantum network coding, which is a recent technique that enables quantum information to be sent on complex networks at higher rates than by using straightforward routing strategies. Kobayashi et al. have recently showed…

Quantum Physics · Physics 2015-06-05 Takahiko Satoh , Francois Le Gall , Hiroshi Imai

Long range quantum information processing will require the integration of different technologies to form hybrid architectures combining the strengths of multiple quantum systems. In this work, we propose a hybrid networking architecture…

Quantum Physics · Physics 2021-06-02 John Hannegan , James D. Siverns , Jake Cassell , Qudsia Quraishi

In this paper, we propose a novel quantum-secured single-pixel imaging method that utilizes non-classical correlations of a photon pair. Our method can detect any attempts to deceive it by exploiting a non-classical correlation of photon…

Quantum Physics · Physics 2023-11-09 Jaesung Heo , Junghyun Kim , Taek Jeong , Yong Sup Ihn , Duk Y. Kim , Zaeill Kim , Yonggi Jo

This paper presents a comprehensive study on the scalability challenges and opportunities in quantum communication networks, with the goal of determining parameters that impact networks most as well as the trends that appear when scaling…

Emerging Technologies · Computer Science 2024-09-16 Connor Howe , Mohsin Aziz , Ali Anwar

We report the experimental demonstration of four-photon quantum interference using telecom-wavelength photons. Realization of multi-photon quantum interference is essential to linear optics quantum information processing and…

Quantum Physics · Physics 2013-05-30 Masahiro Yabuno , Ryosuke Shimizu , Yasuyoshi Mitsumori , Hideo Kosaka , Keiichi Edamatsu

High-speed long-range quantum communication requires combining frequency multiplexed photonic channels with quantum memories. We experimentally demonstrate an integrated quantum frequency conversion protocol that can convert between…

Quantum Physics · Physics 2021-07-14 Paul Fisher , Robert Cernansky , Ben Haylock , Mirko Lobino

The integration of topology into photonics has generated a new design framework for constructing robust and unidirectional waveguides, which are not feasible with traditional photonic devices. Here, we overcome current barriers to the…

Quantum teleportation channels can overcome the effects of photonic loss, a major challenge in the implementation of a quantum network over fiber. Teleportation channels are created by distributing an entangled state between two nodes which…

Quantum Physics · Physics 2022-05-16 Aparimit Chandra , Wenhan Dai , Don Towsley

Low-decoherence regime plays a key role in constructing multi-particle quantum systems and has therefore been constantly pursued in order to build quantum simulators and quantum computers in a scalable fashion. Quantum error correction and…

Quantum Physics · Physics 2018-10-04 Yao Wang , Xiao-Ling Pang , Yong-Heng Lu , Jun Gao , Zhi-Qiang Jiao , Hao Tang , Xian-Min Jin

Routing of photon play a key role in optical communication and quantum networks. Although the quantum routing of signals has been investigated in various systems both in theory and experiment. However, no current theory can route quantum…

Quantum Physics · Physics 2014-10-17 Peng-Cheng Ma , Jian-Qi Zhang , Mang Feng , Zhi-Ming Zhang

The experimental characterization of multi-photon quantum interference effects in optical networks is essential in many applications of photonic quantum technologies, which include quantum computing and quantum communication as two…

Quantum Physics · Physics 2020-07-14 Álvaro Navarrete , Wenyuan Wang , Feihu Xu , Marcos Curty

Quantum computing has the potential to provide solutions to problems that are intractable on classical computers, but the accuracy of the current generation of quantum computers suffer from the impact of noise or errors such as leakage,…

Quantum Physics · Physics 2025-09-03 Benjamin Harper , Behnam Tonekaboni , Bahar Goldozian , Martin Sevior , Muhammad Usman

Quantum networks based on atomic qubits and scattered photons provide a promising way to build a large-scale quantum information processor. We review quantum protocols for generating entanglement and operating gates between two distant…

Quantum Physics · Physics 2015-05-13 L. Luo , D. Hayes , T. A. Manning , D. N. Matsukevich , P. Maunz , S. Olmschenk , J. D. Sterk , C. Monroe

We present a method to classically enhance noise-robustness of single-pixel imaging in photon counting regime with a pulsed source. By using time-domain cross-correlations between temporal profiles of a pulsed source and received signals,…

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