Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Random Quantum Circuits with Time-Reversal Symmetry
Kabir Khanna, Abhishek Kumar, Romain Vasseur +1 more·Jan 22, 2025
Time-reversal (TR) symmetry is crucial for understanding a wide range of physical phenomena, and plays a key role in constraining fundamental particle interactions and in classifying phases of quantum matter. In this work, we introduce an ensemble of...
Group-Adapted Irreducible Matrix Units for the Walled Brauer Algebra
Michał Studziński, Tomasz Młynik, Marek Mozrzymas +2 more·Jan 22, 2025
This paper investigates the representation theory of the algebra of partially transposed permutation operators, $\mathcal{A}^d_{p,p}$, which provides a matrix representation for the abstract walled Brauer algebra. This algebra has recently gained sig...
Continuous-variable quantum communication
Vladyslav C. Usenko, Antonio Acín, Romain Alléaume +8 more·Jan 22, 2025
Tremendous progress in experimental quantum optics during the past decades enabled the advent of quantum technologies, one of which is quantum communication. Aimed at novel methods for more secure or efficient information transfer, quantum communicat...
Quantum machine learning with Adaptive Boson Sampling via post-selection
Francesco Hoch, E. Caruccio, G. Rodari +18 more·Jan 21, 2025
The implementation of large-scale universal quantum computation represents a challenging and ambitious task on the road to quantum processing of information. In recent years, an intermediate approach has been pursued to demonstrate quantum computatio...
On the issues arising when defining an X gate for qudits: Extending the Bit-Flip Channel to $d$-dimensional systems
Jean F. Gomez, Hermann L. Albrecht·Jan 20, 2025
Given the current interest in quantum information tasks involving higher-dimensional systems, we discuss issues that appear when extending the bit-flip channel to qutrit systems. The difficulties arise from the different interpretations of the Pauli ...
Quantum Zeno blockade in optomechanical systems
Karl Pelka, Andr'e Xuereb·Jan 20, 2025
We investigate the application of the quantum Zeno effect (QZE) for the preparation of non-Gaussian states in optomechanical systems. By frequently monitoring the system, the QZE can suppress transitions away from desired subspaces of states. We show...
Quantifying the Upper Limit of Backflash Attack in Quantum Key Distribution
Jialei Su, Junxuan Liu, Zihao Chen +6 more·Jan 17, 2025
Quantum key distribution (QKD) provides information-theoretic security grounded in the fundamental laws of physics. Nevertheless, practical imperfections can introduce side channels that expose QKD systems to quantum hacking, especially passive attac...
Quantum locally recoverable code with intersecting recovery sets
Kaifeng Bu, Weichen Gu, Xiang Li·Jan 17, 2025
We introduce the concept of quantum locally recoverable codes (qLRCs) with intersecting recovery sets. We derive a singleton-like bound for these codes by leveraging the additional information provided by the intersecting recovery sets. Furthermore, ...
Efficient measure of information backflow with a quasistochastic process
Kelvin Onggadinata, Teck Seng Koh·Jan 16, 2025
Characterization and quantification of non-Markovian dynamics in open quantum systems are topical issues in the rapidly developing field of quantum computation and quantum communication. A standard approach based on the notion of information backflow...
Pretty-good simulation of all quantum measurements by projective measurements
M. Kotowski, Michał Oszmaniec·Jan 16, 2025
In quantum theory general measurements are described by so-called Positive Operator-Valued Measures (POVMs). We show that in $d$-dimensional quantum systems an application of depolarizing noise with constant (independent of $d$) visibility parameter ...
Quantum computation via Floquet tailored Rydberg interactions
Jun-Yi Wu, Jin-Lei Wu, F. Guo +5 more·Jan 15, 2025
Rydberg atoms have stood out as a highly promising platform for realizing quantum computation. Floquet frequency modulation (FFM), in Rydberg atom systems, provides a unique tool for achieving precise quantum control and uncovering exotic physical ph...
SeQUeNCe GUI: An Extensible User Interface for Discrete Event Quantum Network Simulations
Alexander Kiefer·Jan 15, 2025
With recent advances in the fields of quantum information theory [J. Pablo. Nature 12, 2172 (2021)] and the approach of the Noisy Intermediate-Scale Quantum (NISQ) [J. Preskill. Quantum 2, 79 (2018)] computing era, it is necessary to provide tools fo...
Decoding Quantum LDPC Codes using Collaborative Check Node Removal
Mainak Bhattacharyya, Ankur Raina·Jan 14, 2025
Fault tolerance in quantum protocols requires contributions from error-correcting codes and their suitable decoders. Quantum Low-Density Parity Check (QLDPC) codes are one of the most explored quantum codes that have good coding rate and efficient de...
Decoherence time of the ground state spin of VB− centers in hexagonal boron nitride
Fatemeh Tarighitabesh, S. Rahimi-Keshari, Mehdi Abdi·Jan 14, 2025
The ground-state spin of optically active defects in hexagonal boron nitride (hBN) offers a promising platform for quantum information applications, such as qubits for quantum computing and nanoscale sensing. A key characteristic of a qubit is its de...
Exact amplitudes of parametric processes in driven Josephson circuits
Roman Baskov, Daniel K. Weiss, S. Girvin·Jan 14, 2025
We present a general approach for analyzing arbitrary parametric processes in Josephson circuits within a single-degree-of-freedom approximation. Introducing a systematic normal-ordered expansion for the Hamiltonian of parametrically driven supercond...
Adaptive Cybersecurity: Dynamically Retrainable Firewalls for Real-Time Network Protection
Sina Ahmadi·Jan 14, 2025
The growing complexity of cyber attacks has necessitated the evolution of firewall technologies from static models to adaptive, machine learning-driven systems. This research introduces"Dynamically Retrainable Firewalls", which respond to emerging th...
On the distinction between distinguishability of states and witness of non-Markovianity
Vijay Pathak, R. Srikanth·Jan 13, 2025
Non-P-divisibility is the strongest divisibility-based notion of quantum non-Markovianity. The generalized trace distance (GTD) based criterion is known to be an optimal witness of non-P-divisibility of dynamical maps, in the sense that a given map i...
Quantum Computing Enhanced Sensing
Richard R. Allen, F. Machado, Isaac L. Chuang +2 more·Jan 13, 2025
Quantum computing and quantum sensing represent two distinct frontiers of quantum information science. In this work, we harness quantum computing to solve a fundamental and practically important sensing problem: the detection of weak oscillating fiel...
Improving key rates by tighter information reconciliation leakage estimation for quantum key distribution
Haokun Mao, Bo Yang, Yucheng Qiao +4 more·Jan 13, 2025
Previous research has aimed to precisely estimate information leakage to improve the secure key rate (SKR) and maximum transmission distance in quantum key distribution (QKD). However, existing methods repeatedly considerd the information of the mult...
Dissipating quartets of excitations in a superconducting circuit
Aron Vanselow, Brieuc Beauseigneur, Louis Lattier +5 more·Jan 10, 2025
Over the past decade, autonomous stabilization of bosonic qubits has emerged as a promising approach for hardware-efficient protection of quantum information. However, applying these techniques to more complex encodings than the Schrödinger cat code ...