Quantum Brain

Papers

Live trends in quantum computing research, updated daily from arXiv.

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12,928 papers in 12 months (-5% vs prior quarter)

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1,571 papers found

Chiral light from an emitter coupled to an achiral particle via the Purcell effect

Yining Xuan, Daito Miyazaki, Yuki Ishikawa +1 more·Oct 20, 2025

We demonstrate that non-chiral nanoparticles can produce chiral light when point emitters are coupled to their surface plasmon modes (SPMs) under certain conditions. Chiral emission arises from asymmetrical plasmon mode propagation from the source co...

Quantum Physics

Interplay of Noise and Reservoir-induced Decoherence in Persistent Currents

Samudra Sur, Thierry Giamarchi·Oct 20, 2025

Persistent current is a hallmark of quantum phase coherence. We study the fate of the persistent current in a non-equilibrium setting, where a tight-binding ring is subjected to stochastic disorder as well as a fermionic reservoir attached to each si...

Mesoscale Physicscond-mat.quant-gascond-mat.stat-mechQuantum Physics

Geometry-Driven Charge and Spin Transport in $\beta12$ Borophene Quantum Dots

Seyed Mahdi Mastoor, Amirhossein Ahmadkhan Kordbacheh·Oct 20, 2025

Theoretical research has been conducted to study how geometry affects charge and spin transport in $β\mathrm{12}$ borophene quantum dots, which are confined systems. The study examined two distinct central regions, which included a circular disc and ...

Mesoscale Physicscond-mat.mtrl-sciphysics.comp-phQuantum Physics

Kinetically-induced bound states in a frustrated Rydberg tweezer array

Mu Qiao, Romain Martin, Lukas Homeier +8 more·Oct 20, 2025

Understanding how particles bind into composite objects is a ubiquitous theme in physics, from the formation of molecules to hadrons in quantum chromodynamics and the pairing of charge carriers in superconductors. The formation of bound states usuall...

Quantum Physicscond-mat.quant-gascond-mat.str-elcond-mat.supr-con

Resource efficient certification of system environment entanglement solely from reduced system dynamics

Jhen-Dong Lin, Pao-Wen Tu, Kuan-Yi Lee +4 more·Oct 20, 2025

Certifying nonclassical correlations typically requires access to all subsystems, presenting a major challenge in open quantum systems coupled to inaccessible environments. Recent works have shown that, in autonomous pure dephasing scenarios, quantum...

Quantum Physics

Mitigating Detuning-Induced Systematic Errors in Entanglement-Enhanced Metrology

Shingo Kukita, Yuichiro Matsuzaki·Oct 19, 2025

Quantum sensing leverages non-classical resources to enhance precision. In particular, Greenberger-Horne-Zeilinger (GHZ) states can, in principle, attain the Heisenberg limit that surpasses the standard quantum limit. While many studies have examined...

Quantum Physics

Temporal-order-driven asymmetric quantum interference and temporal coherence enhancement in spontaneous six-wave mixing

Da Zhang, Yu Zhang·Oct 18, 2025

Narrow-band multiphoton entanglement sources serve as a core enabling resource for advanced quantum information technologies. Recently, researchers have directly generated energy-time entangled triphoton W states in a hot atomic medium via spontaneou...

Quantum Physics

Dynamical control of quantum photon-photon interaction with phase change material

Chaojie Wang, Xutong Li, Xiuyi Ma +6 more·Oct 18, 2025

Quantum interference can produce a pivotal effective photon-photon interaction, enabling the exploration of various quantum information technologies that beyond the possibilities of classical physics. While such an effective interaction is fundamenta...

Quantum Physics

Emergent nonlocal interactions induced by quantized gauge fields in topological systems

Adel Ali, Alexey Belyanin·Oct 17, 2025

We study fermionic and bosonic systems coupled to a real or synthetic static gauge field that is quantized, so the field itself is a quantum degree of freedom and can exist in coherent superposition. A natural example is electrons on a quantum ring e...

Mesoscale PhysicsQuantum Physics

Unravelling inter-channel quantum interference in below-threshold nonsequential double ionization with statistical measures

S. Hashim, C. Figueira de Morisson Faria·Oct 17, 2025

We present a systematic study of interchannel quantum interference in laser-induced nonsequential double ionization (NSDI) within the strong-field approximation. Focusing on the below-threshold intensity regime where the recollision-excitation with s...

Atomic PhysicsQuantum Physics

Enhanced Secondary Electron Detection of Single Ion Implants in Silicon Through Thin SiO2 Layers

Ella B Schneider, Oscar G Lloyd-Willard, Kristian Stockbridge +7 more·Oct 16, 2025

Deterministic placement of single dopants is essential for scalable quantum devices based on group-V donors in silicon. We demonstrate a non-destructive, high-efficiency method for detecting individual ion implantation events using secondary electron...

cond-mat.mtrl-sciQuantum Physics

Quantum State Designs via Magic Teleportation

Hugo Lóio, Guglielmo Lami, Lorenzo Leone +3 more·Oct 15, 2025

We investigate how non-stabilizer resources enable the emergence of quantum state designs within the projected ensemble. Starting from initial states with finite magic and applying resource-free Clifford circuits to scramble them, we analyze the ense...

Quantum Physicscond-mat.stat-mech

Breaking of scale invariance in a strongly dipolar 2D Bose gas

Haoting Zhen, Yifei He, Sampriti Saha +4 more·Oct 15, 2025

Two-dimensional (2D) dipolar atomic gases present unique opportunities for exploring novel quantum phases due to their anisotropic and long-range interactions. However, the behavior of strongly dipolar Bose gases in 2D remains unclear, especially whe...

cond-mat.quant-gascond-mat.otherQuantum Physics

Hybrid light-matter boundaries of graphene in a chiral cavity

Volker Karle, Oriana K. Diessel, Vasil Rokaj +1 more·Oct 15, 2025

Recent advances in chiral cavities that can couple coherently to two-dimensional materials have opened a powerful route to reshape electronic topology without an external drive. Here we establish the bulk-boundary correspondence for graphene embedded...

Mesoscale Physicscond-mat.mtrl-sciQuantum Physics

Efficient lambda-enhanced gray molasses using an EIT-based laser locking scheme

Timothy Leese, Siobhan Patrick, Silvia Bergamini +1 more·Oct 15, 2025

We present a novel implementation of lambda-enhanced gray molasses cooling in a non-standard beam geometry and with an inexpensive laser locking set-up. In contrast to the established use of resource-intensive phase locking methods, our laser system ...

Quantum PhysicsAtomic Physics

Entropic uncertainty and coherence in Einstein-Gauss-Bonnet gravity

Wen-Mei Li, Jianbo Lu, Shu-Min Wu·Oct 15, 2025

We investigate tripartite quantum-memory-assisted entropic uncertain and quantum coherence for GHZ and W states of a fermionic field in the background of a spherically symmetric black hole of Einstein-Gauss-Bonnet (EGB) gravity. Two distinct scenario...

gr-qcQuantum Physics

Autler-Townes spectroscopy of a Rydberg ladder

Tai Xiang, Yue-Hui Lu, Jacquelyn Ho +3 more·Oct 15, 2025

Ladder-type two-photon excitation of an atom from a ground state $|g\rangle$, to an intermediate excited state $|e\rangle$, and, finally, to a Rydberg state $|r\rangle$, has a variety of uses from quantum information to sensing. A common scheme for d...

Quantum PhysicsAtomic Physics

Macroscopic Self-Trapping and Dynamical Phase Transition in Momentum Space Bose-Einstein Condensates

Colby Schimelfenig, Federico Serrano, Corey Halverson +3 more·Oct 15, 2025

Self-trapping is a hallmark phenomenon of nonlinear dynamics. It has significant applications in modern physics, including band structure engineering, phase transition dynamics, quantum metrology, and more. Dilute-gas Bose-Einstein condensates (BECs)...

cond-mat.quant-gasAtomic PhysicsQuantum Physics

Trajectory-Protected Quantum Computing

Barbara Šoda, Pierre-Antoine Graham, T. Rick Perche +1 more·Oct 14, 2025

We introduce a novel method that simultaneously isolates a quantum computer from decoherence and enables the controlled implementation of computational gates. We demonstrate a quantum computing model that utilizes a qubit's motion to protect it from ...

Quantum Physics

Measurement-induced entanglement in noisy 2D random Clifford circuits

Zhi-Yuan Wei, Jon Nelson, Joel Rajakumar +4 more·Oct 14, 2025

We study measurement-induced entanglement generated by column-by-column sampling of noisy 2D random Clifford circuits of size $N$ and depth $T$. Focusing on the operator entanglement $S_{\rm op}$ of the sampling-induced boundary state, first, we repr...

Quantum Physics
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