Quantum complexity phase transitions in monitored random circuits by Ryotaro Suzuki, Jonas Haferkamp, Jens Eisert, Philippe Faist

“…The latter refers to a sudden change in a property of a state of $n$ qubits, such as its entanglement entropy, depending on the rate at which individual qubits are measured. …”
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Convolutional Neural Decoder for Surface Codes by Hyunwoo Jung, Inayat Ali, Jeongseok Ha

“…To perform reliable information processing in quantum computers, quantum error correction (QEC) codes are essential for the detection and correction of errors in the qubits. Among QEC codes, topological QEC codes are designed to interact between the neighboring qubits, which is a promising property for easing the implementation requirements. …”
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Hybrid Josephson Rhombus: A Superconducting Element with Tailored Current-Phase Relation by L. Banszerus, C. W. Andersson, W. Marshall, T. Lindemann, M. J. Manfra, C. M. Marcus, S. Vaitiekėnas

“…Controlling the current-phase relation (CPR) of Josephson elements is essential for tailoring the eigenstates of superconducting qubits, tuning the properties of parametric amplifiers, and designing nonreciprocal superconducting devices. …”
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Faster-than-Clifford simulations of entanglement purification circuits and their full-stack optimization by Vaishnavi L. Addala, Shu Ge, Stefan Krastanov

“…We design distillation circuits from n raw Bell pairs to k purified pairs and study the use of these circuits in the teleportation of logical qubits. The resulting purification circuits are the best-known for finite-size noisy hardware and can be fine-tuned for specific error-models. …”
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Observation of the non-Hermitian skin effect and Fermi skin on a digital quantum computer by Ruizhe Shen, Tianqi Chen, Bo Yang, Ching Hua Lee

“…To implement NHSE accumulation on a quantum computer, the time-evolution circuit not only needs to be non-reciprocal and non-unitary, but must also contain sufficiently many lattice qubits. We demonstrate this by systematically post-selecting ancilla qubits, as demonstrated through two paradigmatic non-reciprocal models on noisy quantum processors, with clear signatures of asymmetric spatial propagation and many-body “Fermi skin” accumulation. …”
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Resonant Perturbation Theory of Decoherence and Relaxation of Quantum Bits by M. Merkli, G. P. Berman, I. M. Sigal

“…We describe our recent results on the resonant perturbation theory of decoherence and relaxation for quantum systems with many qubits. The approach represents a rigorous analysis of the phenomenon of decoherence and relaxation for general N-level systems coupled to reservoirs of bosonic fields. …”
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On Quantum Methods for Machine Learning Problems Part I: Quantum Tools by Farid Ablayev, Marat Ablayev, Joshua Zhexue Huang, Kamil Khadiev, Nailya Salikhova, Dingming Wu

“…The first part, "quantum tools", presents the fundamentals of qubits, quantum registers, and quantum states, introduces important quantum tools based on known quantum search algorithms and SWAP-test, and discusses the basic quantum procedures used for quantum search methods. …”
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Simulation of Nonradiative Energy Transfer in Photosynthetic Systems Using a Quantum Computer by José Diogo Guimarães, Carlos Tavares, Luís Soares Barbosa, Mikhail I. Vasilevskiy

“…We performed quantum simulations of such phenomena, for a proof of concept scenario, in an actual quantum computer, IBM Q, of 5 qubits. We validate the results with the Haken-Ströbl model and discuss the influence of environmental parameters on the efficiency of the energy transport.…”
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Noise-tolerant Grover's algorithm via success-probability prediction by Jian Leng, Fan Yang, Xiang-Bin Wang

“…We propose a noise-tolerant method that significantly reduces the running time and exponentially improves the error threshold with number of qubits for Grover's search. Experiments are implemented on different quantum computing setups, with all results clearly confirming the advantage of our noise-tolerant method to the original Grover's search. …”
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Pulse engineering via projection of response functions by Nicolas Heimann, Lukas Broers, Ludwig Mathey

“…We demonstrate this approach, and compare it to the standard GRAPE algorithm, for the example of a quantum gate on two qubits, demonstrating a clear improvement in convergence and optimal fidelity of the generated protocol.…”
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Hamiltonian simulation of minimal holographic sparsified SYK model by Raghav G. Jha

“…This complexity implies that with less than a hundred logical qubits and about 106 gates, it might be possible to achieve an advantage in this model and simulate real-time dynamics.…”
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Multiplexed Quantum Communication with Surface and Hypergraph Product Codes by Shin Nishio, Nicholas Connolly, Nicolò Lo Piparo, William John Munro, Thomas Rowan Scruby, Kae Nemoto

“…We show that, although multiplexing makes loss errors more damaging, assigning qubits to photons in an intelligent manner can minimize these effects, and the ability to encode higher-distance codes in a smaller number of photons can result in overall lower logical error rates. …”
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Tweezer-Assisted Subwavelength Positioning of Atomic Arrays in an Optical Cavity by M. Seubert, L. Hartung, S. Welte, G. Rempe, E. Distante

“…The atoms are subsequently transferred from the tweezer array to a two-dimensional intracavity optical lattice that offers enhanced coherence for spin qubits while maintaining strong atom confinement. …”
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Refining resource estimation for the quantum computation of vibrational molecular spectra through Trotter error analysis by Dimitar Trenev, Pauline J Ollitrault, Stuart M. Harwood, Tanvi P. Gujarati, Sumathy Raman, Antonio Mezzacapo, Sarah Mostame

“…In this work we accurately estimate quantum resources, such as number of logical qubits and quantum gates, required for vibrational structure calculations on a programmable quantum computer. …”
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Streaming quantum state purification by Andrew M. Childs, Honghao Fu, Debbie Leung, Zhi Li, Maris Ozols, Vedang Vyas

“…This basic task has applications to quantum communication over noisy channels and quantum computation with imperfect devices, but has only been studied previously for the case of qubits. We derive an efficient purification procedure based on the swap test for qudits of any dimension, starting with any initial error parameter. …”
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Realization of a spin-1/2 Kondo necklace model with magnetic field-induced coupling switch by Hironori Yamaguchi, Yu Tominaga, Takanori Kida, Koji Araki, Takashi Kawakami, Yoshiki Iwasaki, Kenta Kimura, Masayuki Hagiwara

“…This offers other opportunities for quantum technologies, particularly in the development of tunable qubits for quantum computing and spintronic devices, where precise control over spin interactions is essential.…”
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Integrability of open boundary driven quantum circuits by Chiara Paletta, Tomaž Prosen

“…In this paper, we address the problem of Yang-Baxter integrability of doubled quantum circuit of qubits (spins 1/2) with open boundary conditions where the two circuit replicas are only coupled at the left or right boundary. …”
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Noisy Approach to Intrinsically Mixed-State Topological Order by Ramanjit Sohal, Abhinav Prem

“…Through a series of examples, we show that the decohered state can display a classical memory, encode logical qubits (i.e., exhibit a quantum memory), and even host chiral or nonmodular topological order. …”
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Optical driving, spin initialization and readout of single SiV− centers in a Fabry-Perot resonator by Gregor Bayer, Robert Berghaus, Selene Sachero, Andrea B. Filipovski, Lukas Antoniuk, Niklas Lettner, Richard Waltrich, Marco Klotz, Patrick Maier, Viatcheslav Agafonov, Alexander Kubanek

“…Ideal quantum repeater nodes efficiently link a quantum memory with photons serving as flying qubits. Color centers in diamond, particularly the negatively charged silicon vacancy center, are promising candidates to establish such nodes. …”
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Probing quantum floating phases in Rydberg atom arrays by Jin Zhang, Sergio H. Cantú, Fangli Liu, Alexei Bylinskii, Boris Braverman, Florian Huber, Jesse Amato-Grill, Alexander Lukin, Nathan Gemelke, Alexander Keesling, Sheng-Tao Wang, Yannick Meurice, Shan-Wen Tsai

“…In this study, we investigate the different quantum phases that arise in ladder arrays comprising up to 92 neutral-atom qubits and experimentally observe the emergence of the quantum floating phase. …”
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