Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Traceable random numbers from a non-local quantum advantage
Gautam A. Kavuri, Jasper Palfree, Dileep V. Reddy +20 more·Nov 8, 2024
The unpredictability of random numbers is fundamental to both digital security1,2 and applications that fairly distribute resources3,4. However, existing random number generators have limitations—the generation processes cannot be fully traced, audit...
Bell state generation and CNOT operation using on-demand identical photons from shape-controlled spatially ordered quantum dots
Qi Huang, Swarnabha Chattaraj, Lucas Jordao +3 more·Nov 7, 2024
Fault tolerant on-chip photonic quantum computation is enormously helped by (a) deterministic generation of the needed thousands to millions of photon qubits from (b) quantum emitters in designed spatially ordered arrays to enable networks for implem...
Quantum benchmarking of high-fidelity noise-biased operations on a detuned Kerr-cat qubit.
Bingcheng Qing, Ahmed Hajr, Ke Wang +19 more·Nov 7, 2024
Ubiquitous noise sources in quantum systems remain a key obstacle to building quantum computers, necessitating the use of quantum error correction codes. Recently, error-correcting codes tailored for noise-biased systems have been shown to offer high...
Quantum Diffusion Models for Few-Shot Learning
Ruhan Wang, Ye Wang, Jing Liu +1 more·Nov 6, 2024
Modern quantum machine learning (QML) methods involve the variational optimization of parameterized quantum circuits on training datasets, followed by predictions on testing datasets. Most state-of-the-art QML algorithms currently lack practical adva...
Programming an Optical Lattice Interferometer
L. M. Seifert, V. Colussi, Michael A. Perlin +2 more·Nov 6, 2024
Programming a quantum device describes the usage of quantum logic gates, agnostic of hardware specifics, to perform a sequence of operations with (typically) a computing or sensing task in mind. Such programs have been executed on digital quantum com...
Holographic deep thermalization for secure and efficient quantum random state generation
Bingzhi Zhang, Peng Xu, Xiaohui Chen +1 more·Nov 5, 2024
Quantum randomness, especially random pure states, underpins fundamental questions like black hole physics and quantum complexity, as well as in practical applications such as quantum device benchmarking and quantum advantage certification. The conve...
Complexity of quantum tomography from genuine non-Gaussian entanglement
Xiaobin Zhao, Pengcheng Liao, Francesco Anna Mele +2 more·Nov 3, 2024
Quantum state tomography typically requires exponentially many copies of a quantum state, due to the complex correlations present in large systems. We show that, for bosonic systems, the scaling is completely determined by the nature of these correla...
Polarization-entangled photon pairs generation from a single lithium niobate waveguide with single poling period.
Xinyue Zhang, Sihui Pei, Ni Yao +4 more·Oct 30, 2024
Polarization-entangled photon pairs are essential sources for photonic quantum information processing. However, generating entangled photon pairs with large detuning via spontaneous parametric down-conversion (SPDC) often requires complex configurati...
Deterministic Generation of Frequency-Bin-Encoded Microwave Photons.
Jiaying Yang, M. Khanahmadi, Ingrid Strandberg +7 more·Oct 30, 2024
A distributed quantum computing network requires a quantum communication channel between spatially separated processing units. In superconducting circuits, such a channel can be implemented based on propagating microwave photons to encode and transfe...
Stabilizing Non-Abelian Topological Order against Heralded Noise via Local Lindbladian Dynamics
Sanket Chirame, Abhinav Prem, Sarang Gopalakrishnan +1 more·Oct 28, 2024
An important open question for the current generation of highly controllable quantum devices is understanding which phases can be realized as stable steady-states under local quantum dynamics. In this work, we show how robust steady-state phases with...
Maneuvering measurement-coherence into measurement-entanglement
Ho-Joon Kim, Soojoon Lee·Oct 28, 2024
Quantum dynamics governs the transformation of static quantum resources, such as coherence and entanglement, in both quantum states and measurements. Prior studies have established that a quantum channel's state-cohering power can be converted into t...
Cryogenic Control and Readout Integrated Circuits for Solid-State Quantum Computing
Lingxiao Lei, Heng Huang, Pingxing Chen +1 more·Oct 21, 2024
In the pursuit of quantum computing, solid-state quantum systems, particularly superconducting ones, have made remarkable advancements over the past two decades. However, achieving fault-tolerant quantum computing for next-generation applications nec...
Assessing Quantum Extreme Learning Machines for Software Testing in Practice
Asmar Muqeet, Hassan Sartaj, Aitor Arrieta +6 more·Oct 20, 2024
Machine learning has been extensively applied for classical software testing activities such as test generation, minimization, and prioritization. Along the same lines, there has been interest in applying quantum machine learning to classical softwar...
Quantum-Classical Computing via Tensor Networks
Nathaniel Tornow, C. Mendl, Pramod Bhatotia·Oct 19, 2024
Circuit knitting offers a promising path to the scalable execution of large quantum circuits by breaking them into smaller sub-circuits whose output is recombined through classical postprocessing. However, current techniques face excessive overhead d...
Composable free-space continuous-variable quantum key distribution using discrete modulation
Kevin Jaksch, Thomas Dirmeier, Y. Weiser +16 more·Oct 16, 2024
Continuous-variable (CV) quantum key distribution (QKD) allows for quantum secure communication with the benefit of being close to existing classical coherent communication. In recent years, CV QKD protocols using a discrete number of displaced coher...
Low-noise Optomechanical Single Phonon-photon Conversion for Quantum Networks
Liu Chen, Alexander Rolf Korsch, Cauê Moreno Kersul +4 more·Oct 14, 2024
Nano-structured optomechanical crystals (OMC) form an interface between mechanical modes with long coherence times and telecom optical photons, ideal for long-distance distribution of quantum information. However, the implementation of scalable quant...
Tachyonic and parametric instabilities in an extended bosonic Josephson junction
Laura Batini, Sebastian Erne, Jörg Schmiedmayer +1 more·Oct 14, 2024
We study the dynamics and decay of quantum phase coherence for Bose-Einstein condensates in tunnel-coupled quantum wires. The two elongated Bose-Einstein condensates exhibit a wide variety of dynamic phenomena where quantum fluctuations can lead to a...
Error-detected quantum operations with neutral atoms mediated by an optical cavity.
Brandon Grinkemeyer, Elmer Guardado-Sanchez, Ivana Dimitrova +5 more·Oct 14, 2024
Neutral-atom quantum processors are a promising platform for large-scale quantum computing. Integrating them with optical cavities enables fast nondestructive qubit readout and access to fast remote entanglement generation for quantum networking. In ...
Disentangling magic states with classically simulable quantum circuits
Gerald E. Fux, Benjamin Béri, Rosario Fazio +1 more·Oct 11, 2024
We show that states obtained from deep random Clifford circuits doped with non-Clifford phase gates (including T-gates and $\sqrt{\mathrm{T}}$-gates) can be disentangled completely, provided the number of non-Clifford gates is smaller or approximatel...
Demonstrating real-time and low-latency quantum error correction with superconducting qubits
Laura Caune, Luka Skoric, N. S. Blunt +22 more·Oct 7, 2024
Quantum error correction (QEC) will be essential to achieve the accuracy needed for quantum computers to realise their full potential. The field has seen promising progress with demonstrations of early QEC and real-time decoded experiments. As quantu...