Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Monolithic Three-Dimensional Tuning of an Atomically Defined Silicon Tunnel Junction.
M. Donnelly, J. Keizer, Y. Chung +1 more·Nov 19, 2021
A requirement for quantum information processors is the in situ tunability of the tunnel rates and the exchange interaction energy within the device. The large energy level separation for atom qubits in silicon is well suited for qubit operation but ...
Simulating thermal qubits through thermofield dynamics: an undergraduate approach using quantum computing
G. Petronilo, M. R. Araújo, C. Cruz·Nov 18, 2021
Quantum computing has attracted the attention of the scientific community in the past few decades. The development of quantum computers promises one path toward safer and faster ways to treat, extract, and transfer information. However, despite the s...
Introduction to quantum error correction and fault tolerance
S. Girvin·Nov 17, 2021
These lecture notes from the 2019 Les Houches Summer School on “Quantum Information Machines” are intended to provide an introduction to classical and quantum error correction with bits and qubits, and with continuous variable systems (harmonic oscil...
A Variation-Aware Quantum Circuit Mapping Approach Based on Multi-Agent Cooperation
P. Zhu, Weiping Ding, Lihuan Wei +3 more·Nov 17, 2021
Quantum circuit mapping is an essential process required by executing quantum circuits using a noisy intermediate-scale quantum (NISQ) device. Since qubits and quantum gates of a NISQ device are error-prone and variable in quality, it is crucial to c...
Toward a quantum computing algorithm to quantify classical and quantum correlation of system states
M. Mahdian, H. Yeganeh·Nov 17, 2021
Optimal measurement is required to obtain the quantum and classical correlations of a quantum state, and the crucial difficulty is how to acquire the maximal information about one system by measuring the other part; in other words, getting the maximu...
Spin Relaxation in Quasi-1D GaAs Mesowires: Control via Electric Field and Aspect Ratio
S. Castelletto, ChanJu You, Deborah L. Gater +1 more·Nov 17, 2021
We report on the measurements of spin relaxation in GaAs quasi-onedimensional mesowires, relying on spin noise spectroscopy, thus adding to the existing body of spin relaxation studies in bulk, two-dimensional and zero dimensional systems. In additio...
A Four-Party Quantum Secret-Sharing Scheme based on Grover's Search Algorithm
Deepa Rathi, Farhan Musanna, Sanjeev Kumar·Nov 17, 2021
The work presents an amalgam of quantum search algorithm (QSA) and quantum secret sharing (QSS). The proposed QSS scheme utilizes Grover's three-particle quantum state. In this scheme, the dealer prepares an encoded state by encoding the classical in...
Storage properties of a quantum perceptron.
Katerina Gratsea, V. Kasper, M. Lewenstein·Nov 16, 2021
Driven by growing computational power and algorithmic developments, machine learning methods have become valuable tools for analyzing vast amounts of data. Simultaneously, the fast technological progress of quantum information processing suggests emp...
Experimental self-testing for photonic graph states.
Jia-Min Xu, Qing Zhou, Yuxiang Yang +5 more·Nov 15, 2021
Graph states-one of the most representative families of multipartite entangled states-are important resources for multiparty quantum communication, quantum error correction, and quantum computation. Device-independent certification of highly entangle...
Robust Preparation of Wigner-Negative States with Optimized SNAP-Displacement Sequences
M. Kudra, Mikael Kervinen, Ingrid Strandberg +10 more·Nov 15, 2021
Hosting non-classical states of light in three-dimensional microwave cavities has emerged as a promising paradigm for continuous-variable quantum information processing. Here we experimentally demonstrate high-fidelity generation of a range of Wigner...
Finite Rate QLDPC-GKP Coding Scheme that Surpasses the CSS Hamming Bound
Nithin Raveendran, Narayanan Rengaswamy, F. Rozpędek +3 more·Nov 13, 2021
Quantum error correction has recently been shown to benefit greatly from specific physical encodings of the code qubits. In particular, several researchers have considered the individual code qubits being encoded with the continuous variable Gottesma...
Quantum error correction meets continuous symmetries: fundamental trade-offs and case studies
Zi-Wen Liu, Sisi Zhou·Nov 11, 2021
We systematically study the fundamental competition between quantum error correction (QEC) and continuous symmetries, two key notions in quantum information and physics, in a quantitative manner. Three meaningful measures of approximate symmetries in...
Large-N Chern insulators: Lattice field theory and quantum simulation approaches to correlation effects in the quantum anomalous Hall effect
L. Ziegler, E. Tirrito, M. Lewenstein +2 more·Nov 8, 2021
Four-Fermi quantum field theories in (2+1) dimensions lie among the simplest models in high-energy physics, the understanding of which requires a non-perturbative lattice formulation addressing their strongly-coupled fixed points. These lattice model...
Efficient realization of quantum algorithms with qudits
Anna Sergeevna Nikolaeva, E. Kiktenko, A. Fedorov·Nov 8, 2021
The development of a universal fault-tolerant quantum computer that can solve efficiently various difficult computational problems is an outstanding challenge for science and technology. In this work, we propose a technique for an efficient implement...
Transverse Mode-Encoded Quantum Gate on a Silicon Photonic Chip.
Lantian Feng, Ming Zhang, X. Xiong +10 more·Nov 8, 2021
As an important degree of freedom (d.o.f.) in photonic integrated circuits, the orthogonal transverse mode provides a promising and flexible way to increase communication capability, for both classical and quantum information processing. To construct...
Parallel Simulation of Quantum Networks with Distributed Quantum State Management
Xiaoliang Wu, Alexander Kolar, Joaquín Chung +3 more·Nov 6, 2021
Quantum network simulators offer the opportunity to cost-efficiently investigate potential avenues for building networks that scale with the number of users, communication distance, and application demands by simulating alternative hardware designs a...
Probing the entanglement of operator growth
Dimitrios Patramanis·Nov 5, 2021
In this work we probe the operator growth for systems with Lie symmetry using tools from quantum information. Namely, we investigate the Krylov complexity, entanglement negativity, von Neumann entropy and capacity of entanglement for systems with SU(...
Spin-networks in the ZX-calculus
R. East, P. Martin-Dussaud, J. Wetering·Nov 4, 2021
The ZX-calculus, and the variant we consider in this paper, the ZXH-calculus, are formal diagrammatic languages for qubit quantum computing. In this paper we will show that this language can also be used to describe SU(2) representation theory. To ac...
NISQ: Error Correction, Mitigation, and Noise Simulation
Ningping Cao, Junan Lin, D. Kribs +3 more·Nov 3, 2021
Error-correcting codes were invented to correct errors on noisy communication channels. Quantum error correction (QEC), however, may have a wider range of uses, including information transmission, quantum simulation/computation, and fault-tolerance. ...
Improved Superconducting Qubit State Readout by Path Interference
Z. Wang 王, Zenghui 增晖 Bao 鲍, Y. Wu 吴 +6 more·Nov 1, 2021
High fidelity single shot qubit state readout is essential for many quantum information processing protocols. In superconducting quantum circuit, the qubit state is usually determined by detecting the dispersive frequency shift of a microwave cavity ...