Quantum

Paper

Privacy-preserving machine learning with tensor networks

Alejandro Pozas-Kerstjens, Senaida Hernández-Santana, José Ramón Pareja Monturiol, Marco Castrillón López, Giannicola Scarpa, Carlos E. González-Guillén, and David Pérez-García,

Quantum 8, 1425 (2024).

Tensor networks, widely used for providing efficient representations of low-energy states of local quantum many-body systems, have been recently proposed as machine learning architectures wh…

Paper

On Strong Bounds for Trotter and Zeno Product Formulas with Bosonic Applications

Tim Möbus,

Quantum 8, 1424 (2024).

The Trotter product formula and the quantum Zeno effect are both indispensable tools for constructing time-evolutions using experimentally feasible building blocks. In this work, we discuss…

Paper

A Spin-Optical Quantum Computing Architecture

Grégoire de Gliniasty, Paul Hilaire, Pierre-Emmanuel Emeriau, Stephen C. Wein, Alexia Salavrakos, and Shane Mansfield,

Quantum 8, 1423 (2024).

We introduce an adaptable and modular hybrid architecture designed for fault-tolerant quantum computing. It combines quantum emitters and linear-optical entangling gates to leverage the stre…

Paper

Zero and Finite Temperature Quantum Simulations Powered by Quantum Magic

Andi Gu, Hong-Ye Hu, Di Luo, Taylor L. Patti, Nicholas C. Rubin, and Susanne F. Yelin,

Quantum 8, 1422 (2024).

We introduce a quantum information theory-inspired method to improve the characterization of many-body Hamiltonians on near-term quantum devices. We design a new class of similarity transfor…

Paper

Learning quantum phases via single-qubit disentanglement

Zheng An, Chenfeng Cao, Cheng-Qian Xu, and D. L. Zhou,

Quantum 8, 1421 (2024).

Identifying phases of matter presents considerable challenges, particularly within the domain of quantum theory, where the complexity of ground states appears to increase exponentially with…

Paper

Classical product code constructions for quantum Calderbank-Shor-Steane codes

Dimiter Ostrev, Davide Orsucci, Francisco Lázaro, and Balazs Matuz,

Quantum 8, 1420 (2024).

Several notions of code products are known in quantum error correction, such as hypergraph products, homological products, lifted products, balanced products, to name a few. In this paper we…

Paper

Network quantum steering enables randomness certification without seed randomness

Shubhayan Sarkar,

Quantum 8, 1419 (2024).

Quantum networks with multiple sources allow the observation of quantum nonlocality without inputs. Consequently, the incompatibility of measurements is not a necessity for observing quantum…

Paper

Security of discrete-modulated continuous-variable quantum key distribution

Stefan Bäuml, Carlos Pascual-García, Victoria Wright, Omar Fawzi, and Antonio Acín,

Quantum 8, 1418 (2024).

Continuous variable quantum key distribution with discrete modulation has the potential to provide information-theoretic security using widely available optical elements and existing telecom…

Paper

Deep learning of many-body observables and quantum information scrambling

Naeimeh Mohseni, Junheng Shi, Tim Byrnes, and Michael J. Hartmann,

Quantum 8, 1417 (2024).

Machine learning has shown significant breakthroughs in quantum science, where in particular deep neural networks exhibited remarkable power in modeling quantum many-body systems. Here, we e…

Paper

A graph-based formalism for surface codes and twists

Rahul Sarkar and Theodore J. Yoder,

Quantum 8, 1416 (2024).

Twist defects in surface codes can be used to encode more logical qubits, improve the code rate, and implement logical gates. In this work we provide a rigorous formalism for constructing su…

Paper

Characterising transformations between quantum objects, ‘completeness’ of quantum properties, and transformations without a fixed causal order

Simon Milz and Marco Túlio Quintino,

Quantum 8, 1415 (2024).

Many fundamental and key objects in quantum mechanics are linear mappings between particular affine/linear spaces. This structure includes basic quantum elements such as states, measurements…

Paper

Entropic distinguishability of quantum fields in phase space

Sara Ditsch and Tobias Haas,

Quantum 8, 1414 (2024).

We present a general way of quantifying the entropic uncertainty of quantum field configurations in phase space in terms of entropic distinguishability with respect to the vacuum. Our approa…

Paper

Critical behaviors of non-stabilizerness in quantum spin chains

Poetri Sonya Tarabunga,

Quantum 8, 1413 (2024).

Non-stabilizerness – commonly known as magic – measures the extent to which a quantum state deviates from stabilizer states and is a fundamental resource for achieving universal quantum comp…

Paper

Mixed-State Quantum Spin Liquids and Dynamical Anyon Condensations in Kitaev Lindbladians

Kyusung Hwang,

Quantum 8, 1412 (2024).

Quantum spin liquids and anyons, used to be subjects of condensed matter physics, now are realized in various platforms of qubits, offering unprecedented opportunities to investigate fundame…

Paper

Thermal masses and trapped-ion quantum spin models: a self-consistent approach to Yukawa-type interactions in the $λ\!ϕ^4$ model

Pablo Viñas Martínez, Esperanza López, and Alejandro Bermudez,

Quantum 8, 1411 (2024).

The quantum simulation of magnetism in trapped-ion systems makes use of the crystal vibrations to mediate pairwise interactions between spins, which are encoded in the internal electronic st…

Paper

Efficiently improving the performance of noisy quantum computers

Samuele Ferracin, Akel Hashim, Jean-Loup Ville, Ravi Naik, Arnaud Carignan-Dugas, Hammam Qassim, Alexis Morvan, David I. Santiago, Irfan Siddiqi, and Joel J. Wallman,

Quantum 8, 1410 (2024).

Using near-term quantum computers to achieve a quantum advantage requires efficient strategies to improve the performance of the noisy quantum devices presently available. We develop and exp…

Category: Paper