Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,393 papers in 12 months (-22% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Pulse-Level Simulation of Crosstalk Attacks on Superconducting Quantum Hardware
Syed Emad Uddin Shubha, Tasnuva Farheen·Jul 22, 2025
Hardware crosstalk in multi-tenant superconducting quantum computers poses a severe security threat, allowing adversaries to induce targeted errors across tenant boundaries by injecting carefully engineered pulses. We present a simulation-based study...
Separating Ansatz Discovery from Deployment on Larger Problems: Reinforcement Learning for Modular Circuit Design
Gloria Turati, Simone Foderà, Riccardo Nembrini +2 more·Jul 21, 2025
As quantum computing continues to gain attention, there is growing interest in how classical machine learning can assist quantum workflows in practice. Automated circuit design, sometimes referred to as Quantum Architecture Search (QAS), is a natural...
Relaxation Control of Open Quantum Systems
Nicolò Beato, Gianluca Teza·Jul 21, 2025
A fundamental problem in experiments with open quantum systems is to ensure steady-state convergence within a given operational time window. Here, we devise a general state preparation recipe to control relaxation timescales and achieve steady-state ...
A critical appraisal of tests of locality and of entanglement versus non-entanglement at colliders
Philip Bechtle, Cedric Breuning, Herbi K. Dreiner +1 more·Jul 21, 2025
It has been argued more than 30 years ago that it is not possible to test locality at colliders, due to the inability to directly measure non-commutating observables such as spin components in current collider experiments. Recently, there has been a ...
Quantum Entanglement Index in String Theory
Atish Dabholkar, Eleanor Harris, Upamanyu Moitra·Jul 21, 2025
We define a notion of `quantum entanglement index' with the aim to compute it for black hole horizons in string theory at one-loop order using the stringy replica method. We consider the horizon of BTZ black holes to construct the relevant conical or...
Mpemba effect in self-contained quantum refrigerators: Accelerated cooling
Sayan Mondal, Ujjwal Sen·Jul 21, 2025
We consider the qubit-qutrit model of self-contained quantum refrigerator and observe the quantum Mpemba effect in its cooling. In this system, the qutrit acts as the refrigerator while the qubit is to be cooled. The entire system is coupled to three...
Interplay of Zeeman Splitting and Tunnel Coupling in Coherent Spin Qubit Shuttling
Ssu-Chih Lin, Paul Steinacker, MengKe Feng +11 more·Jul 21, 2025
Spin shuttling offers a promising approach for developing scalable silicon-based quantum processors by addressing the connectivity limitations of quantum dots. In this work, we demonstrate high-fidelity bucket-brigade spin shuttling in a silicon MOS ...
One Step is Enough: Multi-Agent Reinforcement Learning based on One-Step Policy Optimization for Order Dispatch on Ride-Sharing Platforms
Zijian Zhao, Sen Li·Jul 21, 2025
Order dispatch is a critical task in ride-sharing systems with Autonomous Vehicles (AVs), directly influencing efficiency and profits. Recently, Multi-Agent Reinforcement Learning (MARL) has emerged as a promising solution to this problem by decompos...
Global-scale quantum networking using hybrid-channel quantum repeaters with relays based on a chain of balloons
Pei-Xi Liu, Yu-Ping Lin, Zong-Quan Zhou +2 more·Jul 21, 2025
Global-scale entanglement distribution has been a formidable challenge due to the unavoidable losses in communication channels. Here, we propose a novel backbone channel for quantum network based on balloon-based aerial relays. We demonstrate for the...
Minor embedding for quantum annealing with reinforcement learning
Riccardo Nembrini, Maurizio Ferrari Dacrema, Paolo Cremonesi·Jul 21, 2025
Quantum Annealing (QA) is a quantum computing paradigm for solving combinatorial optimization problems formulated as Quadratic Unconstrained Binary Optimization (QUBO) problems. An essential step in QA is minor embedding, which maps the problem graph...
Efficiently Generation of Cluster States via Time-Delayed Feedback in Matrix Representation
Jia-Jin Zou, Jianyuan Qin, F. Nori +1 more·Jul 21, 2025
Cluster states, as highly entangled multi-qubit states, are widely used as essential resources for quantum communication and quantum computing. However, due to the diverse requirements of applications for cluster states with specific entanglement str...
TASI/CERN/KITP Lecture Notes on"Toward Quantum Computing Gauge Theories of Nature"
Z. Davoudi·Jul 21, 2025
A hallmark of the computational campaign in nuclear and particle physics is the lattice-gauge-theory program. It continues to enable theoretical predictions for a range of phenomena in nature from the underlying Standard Model. The emergence of a new...
Entanglement-Efficient Distribution of Quantum Circuits Over Large-Scale Quantum Networks
Felix Burt, Kuan-Cheng Chen, Kin K. Leung·Jul 21, 2025
Quantum computers face inherent scaling challenges, a fact that necessitates investigation of distributed quantum computing systems, whereby scaling is achieved through interconnection of smaller quantum processing units. However, connecting large nu...
Quantum logic operations and algorithms in a single 25-level atomic qudit
Pei Jiang Low, N. Zutt, Gaurav A. Tathed +1 more·Jul 21, 2025
Scaling quantum computers remains a substantial scientific and technological challenge. Leveraging the full range of intrinsic degrees of freedom in quantum systems offers a promising route towards enhanced algorithmic performance and hardware effici...
Impact of finite squeezing on near-term quantum computations using GKP qubits
F. K. Marqversen, Andreas B. Michelsen, Janus H. Wesenberg +1 more·Jul 21, 2025
We present the first detailed simulation of a measurement based quantum computation based on Gottesman-Kitaev-Preskill (GKP) qubits within a quad-rail lattice (QRL) cluster state involving over 100 GKP modes. This was enabled by the recently develope...
Deterministic Quantum Search via Recursive Oracle Expansion
John Burke, C. McGoldrick·Jul 21, 2025
We introduce a novel deterministic quantum search algorithm that provides a practical alternative to conventional probabilistic search approaches. Our scheme eliminates the inherent uncertainty of quantum search without relying on arbitrary phase rot...
Realistic vulnerabilities of decoy-state quantum key distribution
I. Sushchev, Kirill E. Bugai, S. Molotkov +6 more·Jul 21, 2025
We analyze realistic vulnerabilities of decoy-state quantum key distribution (QKD) arising from the combination of laser damage attack (LDA) and unambiguous state discrimination (USD). While decoy-state QKD is designed to protect against photon-numbe...
Grover's algorithm is an approximation of imaginary-time evolution
Yudai Suzuki, Marek Gluza, Jeongrak Son +3 more·Jul 20, 2025
We reveal the power of Grover's algorithm from thermodynamic and geometric perspectives by showing that it is a product formula approximation of imaginary-time evolution (ITE), a Riemannian gradient flow on the special unitary group. This ITE formula...
Potential barriers are nearly-ideal quantum thermoelectrics at finite power output
Chaimae Chrirou, Abderrahim El Allati, Robert S Whitney·Jul 20, 2025
Quantum thermodynamics defines the ideal quantum thermoelectric, with maximum possible efficiency at finite power output. However, such an ideal thermoelectric is challenging to implement experimentally. Instead, here we consider two types of thermoe...
Time Entangled Quantum Blockchain with Phase Encoding for Classical Data
Ruwanga Konara, Kasun De Zoysa, Anuradha Mahasinghe +2 more·Jul 20, 2025
With rapid advancements in quantum computing, it is widely believed that there will be quantum hardware capable of compromising classical cryptography and hence, the internet and the current information security infrastructure in the coming decade. T...