Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum dots for quantum information technology
T. Heindel, Jehyung Kim, N. Gregersen +2 more·Jul 10, 2023
The generation, manipulation, storage, and detection of single photons play a central role in emerging photonic quantum information technology. Individual photons serve as flying qubits and transmit the quantum information at high speed and with low ...
Quantum Fisher information and multipartite entanglement in spin-1 chains
Federico Dell’Anna, S. Pradhan, C. Boschi +1 more·Jul 5, 2023
In this paper, we study the ground state Quantum Fisher Information (QFI) in one-dimensional spin-1 models, as witness to Multipartite Entanglement. The models addressed are the Bilinear-Biquadratic model, the most general isotropic SU(2)-invariant s...
Information retrieval from Hawking radiation in the non-isometric model of black hole interior: Theory and quantum simulation
Ran Li, Xuanhua Wang, Kun Zhang +1 more·Jul 4, 2023
The non-isometric holographic model of the black hole interior stands out as a potential resolution of the long-standing black hole information puzzle since it remedies the friction between the effective calculation and the microscopic description. I...
Data-driven decoding of quantum error correcting codes using graph neural networks
Moritz Lange, Pontus Havström, Basudha Srivastava +6 more·Jul 3, 2023
To leverage the full potential of quantum error-correcting stabilizer codes it is crucial to have an efficient and accurate decoder. Accurate, maximum likelihood, decoders are computationally very expensive whereas decoders based on more efficient al...
Nonequilibrium dynamics of the Jaynes-Cummings dimer.
G. Vivek, Debabrata Mondal, S. Sinha·Jul 2, 2023
We investigate the nonequilibrium dynamics of a Josephson-coupled Jaynes-Cummings dimer in the presence of Kerr nonlinearity, which can be realized in the cavity and circuit quantum electrodynamics systems. The semiclassical dynamics is analyzed syst...
Improved parameter targeting in 3D-integrated superconducting circuits through a polymer spacer process
G. Norris, L. Michaud, D. Pahl +4 more·Jun 30, 2023
Three-dimensional device integration facilitates the construction of superconducting quantum information processors with more than several tens of qubits by distributing elements such as control wires, qubits, and resonators between multiple layers. ...
Clifford Group and Unitary Designs under Symmetry
Yosuke Mitsuhashi, N. Yoshioka·Jun 30, 2023
We have generalized the well-known statement that the Clifford group is a unitary 3-design into symmetric cases by extending the notion of unitary design. Concretely, we have proven that a symmetric Clifford group is a symmetric unitary 3-design if a...
Superselection rules, quantum error correction, and quantum chromodynamics
N. Bao, ChunJun Cao, A. Chatwin-Davies +2 more·Jun 29, 2023
We investigate the relationship between superselection rules and quantum error correcting codes. We demonstrate that the existence of a superselection rule implies the Knill-Laflamme condition in quantum error correction. As an example, we examine th...
Si/SiGe QuBus for single electron information-processing devices with memory and micron-scale connectivity function
R. Xue, Max Beer, Inga Seidler +6 more·Jun 28, 2023
The connectivity within single carrier information-processing devices requires transport and storage of single charge quanta. Single electrons have been adiabatically transported while confined to a moving quantum dot in short, all-electrical Si/SiGe...
Parallel multi-two-qubit swap gate via quantum nondemolition interaction of orbital-angular-momentum light and an atomic ensemble
E. N. Bashmakova, E. A. Vashukevich, T. Golubeva·Jun 28, 2023
Nowadays quantum SWAP gate has become an integral part of quantum computing, so investigation of methods of its realization seems to be an important practical problem for various quantum-optical and information applications. In the present paper we p...
Effective quantum volume, fidelity and computational cost of noisy quantum processing experiments
K. Kechedzhi, S. Isakov, S. Mandrà +4 more·Jun 28, 2023
Today's experimental noisy quantum processors can compete with and surpass all known algorithms on state-of-the-art supercomputers for the computational benchmark task of Random Circuit Sampling [1-5]. Additionally, a circuit-based quantum simulation...
Efficient Photonic Integration of Diamond Color Centers and Thin-Film Lithium Niobate
D. Riedel, H. Lee, Jason F. Herrmann +11 more·Jun 27, 2023
On-chip photonic quantum circuits with integrated quantum memories have the potential to radically progress hardware for quantum information processing. In particular, negatively charged group-IV color centers in diamond are promising candidates for ...
Efficient Photonic Graph State Generation
Seungbeom Chin, W. J. Munro·Jun 27, 2023
Graph states are central resources for quantum information processing, supporting applications in computation, communication, and error correction. In photonic systems, they are typically assembled from smaller entangled states using probabilistic fu...
Backpropagation scaling in parameterised quantum circuits
Joseph Bowles, David Wierichs, Chae-Yeun Park·Jun 26, 2023
The discovery of the backpropagation algorithm ranks among one of the most important moments in the history of machine learning, and has made possible the training of large-scale neural networks through its ability to compute gradients at roughly the...
Deep Bayesian experimental design for quantum many-body systems
Leopoldo Sarra, F. Marquardt·Jun 26, 2023
Bayesian experimental design is a technique that allows to efficiently select measurements to characterize a physical system by maximizing the expected information gain. Recent developments in deep neural networks and normalizing flows allow for a mo...
Estimating quantum mutual information through a quantum neural network
Myeongjin Shin, Junseo Lee, Kabgyun Jeong·Jun 26, 2023
We propose a method of quantum machine learning called quantum mutual information neural estimation (QMINE) for estimating von Neumann entropy and quantum mutual information, which are fundamental properties in quantum information theory. The QMINE p...
Noisy quantum trees: infinite protection without correction
S. A. Yadavalli, I. Marvian·Jun 25, 2023
We study quantum networks with tree structures, in which information propagates from a root to leaves. At each node in the network, the received qubit unitarily interacts with fresh ancilla qubits, after which each qubit is sent through a noisy chann...
Semi-empirical Haken–Strobl model for molecular spin qubits
Katy Aruachan, Yamil J. Colón, D. Aravena +1 more·Jun 23, 2023
Understanding the physical processes that determine the relaxation T 1 and dephasing T 2 times of molecular spin qubits is critical for envisioned applications in quantum metrology and information processing. Recent spin-echo measurements of solid-st...
Stabilization of symmetry-protected long-range entanglement in stochastic quantum circuits
Iosifina Angelidi, M. Szyniszewski, A. Pal·Jun 22, 2023
Long-range entangled states are vital for quantum information processing and quantum metrology. Preparing such states by combining measurements with unitary gates opened new possibilities for efficient protocols with finite-depth quantum circuits. Th...
Adversarial guesswork with quantum side information
Baasanchimed Avirmed, Kaito Niinomi, M. Dall’Arno·Jun 22, 2023
The guesswork of a classical-quantum channel quantifies the cost incurred in guessing the state transmitted by the channel when only one state can be queried at a time, maximized over any classical pre-processing and minimized over any quantum post-p...