Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Measurement-based generation and preservation of cat and grid states within a continuous-variable cluster state
M. Eaton, C. González-Arciniegas, R. N. Alexander +2 more·Dec 20, 2021
We present an algorithm to reliably generate various quantum states critical to quantum error correction and universal continuous-variable (CV) quantum computing, such as Schrödinger cat states and Gottesman-Kitaev-Preskill (GKP) grid states, out of ...
Mitigation of Crosstalk Errors in a Quantum Measurement and Its Applications
Seungchan Seo, J. Seong, J. Bae·Dec 20, 2021
In practical realizations of quantum information processing, there may exist noise in a measurement readout stage where errors appear not only on individual qubits but also on multiple ones collectively, the latter of which is called crosstalk errors...
Quantum error correction with the color-Gottesman-Kitaev-Preskill code
Jiaxuan Zhang, Jian Zhao, Yuchun Wu +1 more·Dec 20, 2021
Jiaxuan Zhang, 2 Jian Zhao, 2 Yu-Chun Wu, 2, 3, ∗ and Guo-Ping Guo 2, 3, 4 Key Laboratory of Quantum Information, Chinese Academy of Sciences, School of Physics, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China CAS Cen...
Sequential generation of multiphoton entanglement with a Rydberg superatom
Chao Yang, Yong Yu, Jun Li +3 more·Dec 17, 2021
Multiqubit entanglement is an indispensable resource for quantum information science. In particular, the entanglement of photons is of conceptual interest due to its implications in measurement-based quantum computing, communication and metrology. Th...
A prototype of quantum von Neumann architecture
Dongsheng Wang·Dec 17, 2021
A modern computer system, based on the von Neumann architecture, is a complicated system with several interactive modular parts. It requires a thorough understanding of the physics of information storage, processing, protection, readout, etc. Quantum...
Deterministic and Universal Quantum Squeezing Gate with a Teleportation‐Like Protocol
Xiaocong Sun, Yajun Wang, Yuhang Tian +4 more·Dec 17, 2021
Squeezing transformation as an essential component of quantum information processing, gives rise to the possibility to perform various tasks such as distributed quantum computation and the quantum‐logic gate. However, the reported squeezing gate with...
Rescaling decoder for two-dimensional topological quantum color codes on 4.8.8 lattices
Pedro Parrado-Rodríguez, M. Rispler, Markus P. Müller·Dec 17, 2021
Fault-tolerant quantum computation relies on scaling up quantum error correcting codes in order to suppress the error rate on the encoded quantum states. Topological codes, such as the surface code or color codes are leading candidates for practical ...
Quantum Computer Benchmarking via Quantum Algorithms
K. Georgopoulos, C. Emary, P. Zuliani·Dec 17, 2021
We present a framework that utilizes quantum algorithms, an architecture aware quantum noise model and an ideal simulator to benchmark quantum computers. The benchmark metrics highlight the difference between the quantum computer evolution and the si...
Quantum phase modulation with acoustic cavities and quantum dots
Poolad Imany, Zixuan Wang, Ryan A. Decrescent +8 more·Dec 17, 2021
Fast, efficient, and low power modulation of light at microwave frequencies is crucial for chip-scale classical and quantum processing as well as for long-range networks of superconducting quantum processors. A successful approach to bridge the gap b...
Optimal Model for Fewer-Qubit CNOT Gates With Rydberg Atoms
Rui Li, Shurui Li, Dongmin Yu +2 more·Dec 16, 2021
Fewer-qubit quantum logic gate, serving as a basic unit for constructing universal multiqubit gates, has been widely applied in quantum computing and quantum information. However, traditional constructions for fewer-qubit gates often utilize a multi-...
Explainable natural language processing with matrix product states
J. Tangpanitanon, Chanatip Mangkang, P. Bhadola +3 more·Dec 16, 2021
Despite empirical successes of recurrent neural networks (RNNs) in natural language processing (NLP), theoretical understanding of RNNs is still limited due to intrinsically complex non-linear computations. We systematically analyze RNNs’ behaviors i...
Two-level quantum walkers on directed graphs. I. Universal quantum computing
Ryo Asaka, K. Sakai, Ryoko Yahagi·Dec 15, 2021
In the present paper, the first in a series of two, we propose a model of universal quantum computation using a fermionic/bosonic multi-particle continuous-time quantum walk with two internal states (e.g., the spin-up and down states of an electron)....
Authenticated Multiparty Quantum Key Agreement for Optical-Ring Quantum Communication Networks
Li-Zhen Gao, Xin Zhang, Song Lin +2 more·Dec 15, 2021
Quantum communication networks are connected by various devices to achieve communication or distributed computing for users in remote locations. In order to solve the problem of generating temporary session key for secure communication in optical-rin...
Light Modulation in Silicon Photonics by PZT Actuated Acoustic Waves
Irfan Ansari, J. George, G. F. Feutmba +4 more·Dec 15, 2021
Tailoring the interaction between light and sound has opened new possibilities in photonic integrated circuits (PICs) that range from achieving quantum control of light to high-speed information processing. However, the actuation of sound waves in Si...
Information-Theoretic Limits of Quantum Learning via Data Compression
Armando Angrisani, Brian Coyle, Elham Kashefi·Dec 13, 2021
Understanding the power of quantum data in machine learning is central to many proposed applications of quantum technologies. While access to quantum data can offer exponential advantages for carefully designed learning tasks and often under strong a...
Dynamical photon–photon interaction mediated by a quantum emitter
H. Le Jeannic, Alexey Tiranov, J. Carolan +11 more·Dec 13, 2021
Single photons role in the development of quantum science and technology. They can carry quantum information over extended distances to act as the backbone of a future quantum internet1 and can be manipulated in advanced photonic circuits, enabling s...
An Optimized Quantum Implementation of ISD on Scalable Quantum Resources
Andre Esser, Sergi Ramos-Calderer, E. Bellini +2 more·Dec 12, 2021
The security of code based constructions is usually assessed by Information Set Decoding (ISD) algorithms. In the quantum setting, amplitude amplification yields an asymptotic square root gain over the classical analogue. However, it is still unclear...
SPDCinv: Inverse Quantum-Optical Design of High-Dimensional Qudits
Eyal Rozenberg, Aviv Karnieli, O. Yesharim +5 more·Dec 11, 2021
Spontaneous parametric down-conversion in quantum optics is an invaluable resource for the realization of high-dimensional qudits with spatial modes of light. One of the main open challenges is how to directly generate a desirable qudit state in the ...
Dispersive qubit readout with machine learning
E. Rinaldi, R. D. Candia, S. Felicetti +1 more·Dec 10, 2021
Open quantum systems can undergo dissipative phase transitions, and their critical behavior can be exploited in sensing applications. For example, it can be used to enhance the fidelity of superconducting qubit readout measurements, a central problem...
Thermodynamic Constraints on Quantum Information Gain and Error Correction: A Triple Trade-Off
Arshag Danageozian, M. Wilde, F. Buscemi·Dec 9, 2021
Quantum error correction (QEC) is a procedure by which the quantum state of a system is protected against a known type of noise, by preemptively adding redundancy to that state. Such a procedure is commonly used in quantum computing when thermal nois...