Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
The QQUIC Transport Protocol: Quantum-Assisted UDP Internet Connections
Peng Yan, Nengkun Yu·Jun 1, 2020
Quantum key distribution, initialized in 1984, is a commercialized secure communication method that enables two parties to produce a shared random secret key using quantum mechanics. We propose a QQUIC (Quantum-assisted Quick UDP Internet Connections...
Expressibility of the alternating layered ansatz for quantum computation
Kouhei Nakaji, N. Yamamoto·May 26, 2020
The hybrid quantum-classical algorithm is actively examined as a technique applicable even to intermediate-scale quantum computers. To execute this algorithm, the hardware efficient ansatz is often used, thanks to its implementability and expressibil...
A quantum procedure for map generation
James R. Wootton·May 20, 2020
Quantum computation is an emerging technology that promises a wide range of possible use cases. This promise is primarily based on algorithms that are unlikely to be viable over the coming decade. For near-term applications, quantum software needs to...
Quantum machine learning in high energy physics
W. Guan, G. Perdue, Arthur Pesah +4 more·May 18, 2020
Machine learning has been used in high energy physics (HEP) for a long time, primarily at the analysis level with supervised classification. Quantum computing was postulated in the early 1980s as way to perform computations that would not be tractabl...
Realizing a deterministic source of multipartite-entangled photonic qubits
Jean-Claude Besse, K. Reuer, M. Collodo +11 more·May 14, 2020
Sources of entangled electromagnetic radiation are a cornerstone in quantum information processing and offer unique opportunities for the study of quantum many-body physics in a controlled experimental setting. Generation of multi-mode entangled stat...
Efficient Optimization of Cutoffs in Quantum Repeater Chains
Boxi Li, T. Coopmans, David Elkouss·May 11, 2020
Quantum communication enables the implementation of tasks that are unachievable with classical resources. However, losses on the communication channel preclude the direct long-distance transmission of quantum information in many relevant scenarios. I...
Entanglement Distribution in a Quantum Network: A Multicommodity Flow-Based Approach
Kaushik Chakraborty, David Elkouss, B. Rijsman +1 more·May 1, 2020
We consider the problem of optimizing the achievable EPR-pair distribution rate between multiple source-destination pairs in a quantum Internet, where the repeaters may perform a probabilistic Bell-state measurement and we may impose a minimum end-to...
Adaptive Techniques in Practical Quantum Key Distribution
Wenyuan Wang·Apr 23, 2020
Quantum Key Distribution (QKD) can provide information-theoretically secure communications and is a strong candidate for the next generation of cryptography. However, in practice, the performance of QKD is limited by "practical imperfections" in real...
Quantum feedback for measurement and control
Leigh S. Martin·Apr 21, 2020
Author(s): Martin, Leigh Samuel | Advisor(s): Siddiqi, Irfan; Whaley, K. Birgitta | Abstract: The standard quantum formalism introduced at the undergraduate level treats measurement as an instantaneous collapse. In reality however, no physical proces...
The challenge and opportunities of quantum literacy for future education and transdisciplinary problem-solving
Laurentiu Nita, L. Mazzoli Smith, N. Chancellor +1 more·Apr 14, 2020
ABSTRACT Background Knowledge of quantum computing is arguably inaccessible to many, with knowledge of the complex mathematics involving a particular barrier to entry, creating difficulty in terms of teaching and inclusive learning for those without ...
Quantum transduction of optical photons from a superconducting qubit
M. Mirhosseini, A. Sipahigil, M. Kalaee +1 more·Apr 9, 2020
Bidirectional conversion of electrical and optical signals lies at the foundation of the global internet. Such converters are employed at repeater stations to extend the reach of long-haul fiber optic communication systems and within data centers to ...
Analyzing photon-counting based entanglement generation between solid-state spin qubits by unraveling the master equation
S. Wein, Jia-Wei Ji, Yu-Feng Wu +3 more·Apr 9, 2020
We analyze and compare three different schemes that can be used to generate entanglement between spin qubits in optically-active single solid-state quantum systems. Each scheme is based on first generating entanglement between the spin degree of free...
Detecting Temporal Correlation via Quantum Random Number Generation
Yutaka Shikano, Kentaro Tamura, Raymond H. Putra·Apr 3, 2020
All computing devices, including quantum computers, must exhibit that for a given input, an output is produced in accordance with the program. The outputs generated by quantum computers that fulfill these requirements are not temporally correlated, h...
Eigen component analysis: A quantum theory incorporated machine learning technique to find linearly maximum separable components
Chen Miao, Shaohua Ma·Mar 23, 2020
For a linear system, the response to a stimulus is often superposed by its responses to other decomposed stimuli. In quantum mechanics, a state is the superposition of multiple eigenstates. Here, by taking advantage of the phase difference, a common ...
Scalable integrated single-photon source
R. Uppu, Freja T. Pedersen, Ying Wang +8 more·Mar 19, 2020
An on-chip deterministic source generating more than 100 identical photons meets the resource requirement for quantum advantage. Photonic qubits are key enablers for quantum information processing deployable across a distributed quantum network. An o...
A femto-Tesla DC SQUID design for quantum-ready readouts
I. Sochnikov, D. Davino, B. Kalisky·Mar 17, 2020
Among some of the current uses of the DC Superconducting QUantum Interference Devices (SQUIDs) are qubit-readouts and sensors for probing properties of quantum materials. We present a rather unique gradiometric niobium SQUID design with state-of-the-...
Universal and optimal coin sequences for high entanglement generation in 1D discrete time quantum walks
A. Gratsea, F. Metz, T. Busch·Mar 16, 2020
Entanglement is a key resource in many quantum information applications and achieving high values independently of the initial conditions is an important task. Here we address the problem of generating highly entangled states in a discrete time quant...
Digital Simulation of Topological Matter on Programmable Quantum Processors.
F. Mei, Qihao Guo, Ya-Fei Yu +3 more·Mar 13, 2020
Simulating the topological phases of matter in synthetic quantum simulators is a topic of considerable interest. Given the universality of digital quantum simulators, the prospect of digitally simulating exotic topological phases is greatly enhanced....
Quantum Process Tomography of a Controlled-Phase Gate for Time-Bin Qubits
Hsin-Pin Lo, Takuya Ikuta, N. Matsuda +3 more·Mar 4, 2020
Time-bin qubits, where information is encoded in a single photon at different times, have been widely used in optical fiber and waveguide based quantum communications. With the recent developments in distributed quantum computation, it is logical to ...
AccQOC: Accelerating Quantum Optimal Control Based Pulse Generation
Jinglei Cheng, Haoqing Deng, Xuehai Qian·Mar 1, 2020
In the last decades, we have witnessed the rapid growth of Quantum Computing. In the current Noisy Intermediate-Scale Quantum (NISQ) era, the capability of a quantum machine is limited by the decoherence time, gate fidelity and the number of Qubits. ...