Abstract We propose to employ the amplification mechanism of Grover’s search algorithm to efficiently prepare entangled states of an ensemble of qubits. The conditional change of sign employed in the algorithm can be implemented by the phase shift of photons scattered on an optical cavity hosting an atomic ensemble. We show that collective Dicke states, Greenberger-Horne-Zeilinger states, and Schrödinger cat superpositions of 𝑁 atoms may be prepared deterministically by few ( ∼𝑁1/4) photon scattering events without individual addressing of the atoms. https://lnkd.in/gg2f78e7
Preparing entangled states with Grover's algorithm and optical cavity
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Excited to share our new preprint on arXiv! We investigate how electronic fluctuations shape the structure and dynamics of molten AgI. Using DFT, a universal ML potential (Orb), and a classical force field, we show that polarization fluctuations of iodide ions strongly enhance Ag⁺ diffusion. This creates a dynamic asymmetry between cation and anion motion—an effect missed by classical models. Beyond molten salts, our findings connect ionic liquid dynamics with the "electronic paddle-wheel" mechanism in superionic solids and highlight how ML potentials like Orb can faithfully capture many-body polarization effects. https://lnkd.in/eaxHxFpF
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Fractional Marketing Director | B2B, Life Sciences & Tech | Go-to-Market & Commercial Strategy. Building complex products? Need senior marketing that delivers? Let’s talk.
Really looking forward to this one tomorrow Prof. Knut Müller-Caspary will be joining Quantum Detectors to showcase the latest breakthroughs in 4D-STEM and momentum-resolved imaging, powered by the Timepix4-based Merlin T4 detector. Knut will explore how new detector technology is enabling researchers to: • Map strain, charge density and electric fields with picometre precision • Push ptychography into real-time workflows • Extend 4D-STEM into beam-sensitive and organic systems It's not often you get to hear directly from one of the leading voices in this space, so if you are interested in the future of electron microscopy, there is still time to register: https://lnkd.in/ecz4aUcn #4DSTEM #ElectronMicroscopy #Timepix4 #MerlinT4 #QuantumDetectors #MicroscopyInnovation
Next-gen 4D-STEM is here. With the Merlin T4 (Timepix4-powered), you get both ultrafast 4D-STEM with every imaging mode in a single dataset. Why does this matter? ⚡ Quantify charge densities at subatomic resolution ⚡ Map atomic electric fields in 2D materials ⚡ Solve the phase problem with ptychography Join Prof. Knut Müller-Caspary from Ludwig-Maximilians-Universität München & the Ernst Ruska-Centre (ER-C) and Quantum Detectors Ltd.’s Matt C. for first experimental results with the Merlin T4. 📅 Wednesday 27 August | 16:00 BST / 17:00 CEST / 11:00 EDT / 08:00 PDT Register here: https://lnkd.in/ecz4aUcn #ElectronMicroscopy #4DSTEM #MerlinT4 #Timepix4 #MaterialsScience
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👉#EditorsChoice Characterization of a Large Area Hybrid Pixel Detector of Timepix3 Technology for Space Applications 👨🔬Authors: Martin Farkas, et al. 🔗Full text: https://lnkd.in/gXKapN9S
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Final Year B.Tech CSE Student | Aspiring Full Stack Developer | Skilled in Python, HTML, CSS, JavaScript | Animation | Quantum Computing Enthusiast
🚀 Day 8: Single-Qubit States & Quantum State Visualization 🔹 Key Takeaways: Single-Qubit States: Unlike classical bits, qubits can exist in superposition, representing 0 and 1 simultaneously. Bloch Sphere Visualization: Provides an intuitive geometric representation of qubit states and their transformations. Hands-On Learning: Seeing quantum states evolve in Qiskit made abstract concepts tangible. Foundation for Quantum Circuits: Understanding single-qubit behavior is essential before building multi-qubit systems and entangled states. #QuantumComputing #Qiskit #BlochSphere #Qubits #QucodeChallenge #Day8 #LearningJourney
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https://lnkd.in/gzQqHZk4 Stacey Jeffery’s work shows how quantum walks can speed up search on graphs. Classical random walks need time proportional to the hitting time to find a marked vertex. Earlier quantum methods gave quadratic speedup only for detection or a single marked vertex. Her algorithm finds a marked vertex in O(HT)O(\sqrt{HT})O(HT) time even with multiple marked vertices. This achieves the long-sought quadratic speedup for general quantum walk search problems.
Stacey Jeffery - Quadratic speedup for quantum walk search
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👩🏻💻Day 9 of Quantum Computing Challenge with QuCode *Today’s focus*: Pauli gates, Hadamard gate, Phase, CNOT, Unitory transformations Pauli Gates (X, Y, Z): Basic Bloch sphere rotations. Hadamard (H): Creates equal superpositions. Phase (S) & T Gate: Precise phase shifts for interference and algorithm tuning. CNOT: Two-qubit gate; flips target if control = |1⟩. ✨21 Days Quantum Computing Challenge - Cohort 3! #QuCode #QuantumComputin #QuantumMechanics #QuantumChallenge #QuantumLearning #PauliGates #HadamardGate #Phase #CNOT #UnitaryTransformations #QuantumStates #Qi
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Our simple work is now on arXiv: "Correlation-Enhanced Autonomous Quantum Battery Charging via Structured Reservoirs" In this study, we explore how correlations and coherence serve as resources for autonomous quantum batteries, influencing charging efficiency and ergotropy. We also derive upper and lower bounds on the maximum extractable work based on coherence and exchanged correlations between subsystems. https://lnkd.in/ewJf2sA7
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A new publication in Quantum: Estimating quantum Markov chains using coherent absorber post-processing and pattern counting estimator by Federico Girotti, Alfred Godley, and Madalin Guta https://lnkd.in/eG8gbkns
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Paradigms for the (quantum) algorithms on different technologies by Thomas Ayral at CEMRACS 2025 Quantum Summer School at CIRM Video: https://lnkd.in/e4QwmZTq Notes: https://lnkd.in/eYHd3BK7
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